Questões de Concurso Sobre inglês

Foram encontradas 25.289 questões

Q3758292 Inglês
The English passive highlights affected participants or information structure shifts (topic continuity), not merely agent deletion. In indirect speech, tense and deixis may shift under backshifting conventions, yet factivity and universal truths resist change. Subordination via complement, relative, and adverbial clauses provides cohesion; that-deletion depends on register and processing ease (cf. Huddleston & Pullum). Select the correct statement. 
Alternativas
Q3758291 Inglês
English morphology balances relatively poor inflection with rich derivation and compounding. Affixation (e.g., un-, re-, -ness, -ize) supports lexical productivity, while conversion (zero-derivation) enables category shift (“to google a term”). Morphological transparency affects processing speed and acquisition (cf. Bauer & Lieber). In pedagogy, word families and morphological strategies (cf. Nation) outcompete rote lists for durable vocabulary growth. Choose the correct option.
Alternativas
Q3758290 Inglês
English rhythm, stress placement, and intonational contours encode information structure, stance and pragmatic nuance (Halliday; Wells). Nuclear prominence interacts with grammatical reduction, prosodic phrasing, and expectations of discourse coherence. For advanced learners, deviations in tonic placement may obscure contrast, weaken politeness strategies, or alter epistemic commitment. Choose the correct option.
Alternativas
Q3758289 Inglês
In English phonology, vowel quantity and quality interact with stress and rhythm to shape intelligibility (cf. Cruttenden). Contrastively, Brazilian Portuguese exhibits seven oral vowels with stable /e ~ ɛ/ and /o ~ ɔ/ distributions, while English presents a denser vowel space and widespread vowel reduction in unstressed syllables (e.g., schwa). Moreover, aspiration of voiceless plosives in stressed onset (/p, t, k/ → [pʰ, tʰ, kʰ]) is phonetic but phonologically contrastive in perception for many learners. From a teaching viewpoint (cf. Jenkins’ Lingua Franca Core), prioritizing vowel length contrasts and consonant clusters often yields greater communicative payoff than pursuing native-like allophones. Choose the correct option.
Alternativas
Q3758068 Inglês
Jadarite, described as ‘Earth's kryptonite twin,’ has potential to replace fossil fuels 

A plain-white mineral found in western Serbia has a name straight out of the comics and a chemical profile that battery makers crave. Called jadarite, also known as sodium-lithium- boron silicate hydroxide, was first pulled from drill cores in 2004 and officially recognized as a new mineral two years later. 

Geologists soon noticed that the formula on the sample label matched the faux “kryptonite” shown in a 2006 Superman film, minus the fluorine and the green glow. That pop-culture twist helped the discovery grab headlines, yet the real excitement lies in what the mineral could do for electric vehicles and renewable power storage.

Jadarite occurs as dull, chalky nodules tucked inside fine-grained shale in the Jadar Valley. The host rocks formed in an ancient lake basin rich in volcanic ash, allowing lithium and boron to build up in the pore waters until the mineral crystallized. Those conditions have been found only in Serbia so far, making the deposit both unique and strategically valuable. 

Michael Page, a process chemist at Australia’s Nuclear Science and Technology Organisation (ANSTO), points out that the valley “is considered one of the largest lithium deposits in the world, making it a potential game-changer for the global green energy transition.” […]

Serbian communities are not unanimous in welcoming the mine. Environmental groups warn that alkali-rich tailings could leak into the Jadar River and harm local agriculture. Independent studies have found elevated boron and lithium downstream of exploratory boreholes, fueling weekly protests in Belgrade.

Supporters counter that rigorous water-management plans and sealed tailings cells can limit impacts, and that the economic gains, including thousands of skilled jobs, are hard to ignore. European automakers also see the project as a chance to shorten supply chains now dominated by South American brines and Chinese refiners.

Whether or not the Jadar project reaches full production, the mineral has already altered the critical-minerals map. Its existence proves that lithium can concentrate outside traditional pegmatites and brines, broadening the hunt to basins once dismissed as uneconomic clay.

Researchers are now experimenting with synthetic pathways, seeding gels of silica, borate, and lithium under lake-like conditions to see if jadarite can be grown on demand. Success could pave the way for engineered deposits that bypass mining altogether. For now, though, nature’s one known batch in western Serbia remains the focus of intense scientific, industrial, and public scrutiny.

Adapted from https://www.earth.com/news/jadarite-described-as-earthskryptonite-twin-has-potential-to-replace-fossil-fuels/


Based on the last paragraph, analyse the assertions below:
I. Scientific experimentation might do away with the need for mining.
II. Currently, interest in jadarite deposits seems to be waning.
III. It is highly unlikely that the deposits found in Serbia will reshape the future of energy.
Choose the correct answer. 
Alternativas
Q3758067 Inglês
Jadarite, described as ‘Earth's kryptonite twin,’ has potential to replace fossil fuels 

A plain-white mineral found in western Serbia has a name straight out of the comics and a chemical profile that battery makers crave. Called jadarite, also known as sodium-lithium- boron silicate hydroxide, was first pulled from drill cores in 2004 and officially recognized as a new mineral two years later. 

Geologists soon noticed that the formula on the sample label matched the faux “kryptonite” shown in a 2006 Superman film, minus the fluorine and the green glow. That pop-culture twist helped the discovery grab headlines, yet the real excitement lies in what the mineral could do for electric vehicles and renewable power storage.

Jadarite occurs as dull, chalky nodules tucked inside fine-grained shale in the Jadar Valley. The host rocks formed in an ancient lake basin rich in volcanic ash, allowing lithium and boron to build up in the pore waters until the mineral crystallized. Those conditions have been found only in Serbia so far, making the deposit both unique and strategically valuable. 

Michael Page, a process chemist at Australia’s Nuclear Science and Technology Organisation (ANSTO), points out that the valley “is considered one of the largest lithium deposits in the world, making it a potential game-changer for the global green energy transition.” […]

Serbian communities are not unanimous in welcoming the mine. Environmental groups warn that alkali-rich tailings could leak into the Jadar River and harm local agriculture. Independent studies have found elevated boron and lithium downstream of exploratory boreholes, fueling weekly protests in Belgrade.

Supporters counter that rigorous water-management plans and sealed tailings cells can limit impacts, and that the economic gains, including thousands of skilled jobs, are hard to ignore. European automakers also see the project as a chance to shorten supply chains now dominated by South American brines and Chinese refiners.

Whether or not the Jadar project reaches full production, the mineral has already altered the critical-minerals map. Its existence proves that lithium can concentrate outside traditional pegmatites and brines, broadening the hunt to basins once dismissed as uneconomic clay.

Researchers are now experimenting with synthetic pathways, seeding gels of silica, borate, and lithium under lake-like conditions to see if jadarite can be grown on demand. Success could pave the way for engineered deposits that bypass mining altogether. For now, though, nature’s one known batch in western Serbia remains the focus of intense scientific, industrial, and public scrutiny.

Adapted from https://www.earth.com/news/jadarite-described-as-earthskryptonite-twin-has-potential-to-replace-fossil-fuels/


In the fourth paragraph, the process chemist’s opinion about the Jadar Valley is that it is
Alternativas
Q3758066 Inglês
Jadarite, described as ‘Earth's kryptonite twin,’ has potential to replace fossil fuels 

A plain-white mineral found in western Serbia has a name straight out of the comics and a chemical profile that battery makers crave. Called jadarite, also known as sodium-lithium- boron silicate hydroxide, was first pulled from drill cores in 2004 and officially recognized as a new mineral two years later. 

Geologists soon noticed that the formula on the sample label matched the faux “kryptonite” shown in a 2006 Superman film, minus the fluorine and the green glow. That pop-culture twist helped the discovery grab headlines, yet the real excitement lies in what the mineral could do for electric vehicles and renewable power storage.

Jadarite occurs as dull, chalky nodules tucked inside fine-grained shale in the Jadar Valley. The host rocks formed in an ancient lake basin rich in volcanic ash, allowing lithium and boron to build up in the pore waters until the mineral crystallized. Those conditions have been found only in Serbia so far, making the deposit both unique and strategically valuable. 

Michael Page, a process chemist at Australia’s Nuclear Science and Technology Organisation (ANSTO), points out that the valley “is considered one of the largest lithium deposits in the world, making it a potential game-changer for the global green energy transition.” […]

Serbian communities are not unanimous in welcoming the mine. Environmental groups warn that alkali-rich tailings could leak into the Jadar River and harm local agriculture. Independent studies have found elevated boron and lithium downstream of exploratory boreholes, fueling weekly protests in Belgrade.

Supporters counter that rigorous water-management plans and sealed tailings cells can limit impacts, and that the economic gains, including thousands of skilled jobs, are hard to ignore. European automakers also see the project as a chance to shorten supply chains now dominated by South American brines and Chinese refiners.

Whether or not the Jadar project reaches full production, the mineral has already altered the critical-minerals map. Its existence proves that lithium can concentrate outside traditional pegmatites and brines, broadening the hunt to basins once dismissed as uneconomic clay.

Researchers are now experimenting with synthetic pathways, seeding gels of silica, borate, and lithium under lake-like conditions to see if jadarite can be grown on demand. Success could pave the way for engineered deposits that bypass mining altogether. For now, though, nature’s one known batch in western Serbia remains the focus of intense scientific, industrial, and public scrutiny.

Adapted from https://www.earth.com/news/jadarite-described-as-earthskryptonite-twin-has-potential-to-replace-fossil-fuels/


In the fragment “a chemical profile that battery makers crave” (1st paragraph), the verb is close in meaning to
Alternativas
Q3758065 Inglês
Jadarite, described as ‘Earth's kryptonite twin,’ has potential to replace fossil fuels 

A plain-white mineral found in western Serbia has a name straight out of the comics and a chemical profile that battery makers crave. Called jadarite, also known as sodium-lithium- boron silicate hydroxide, was first pulled from drill cores in 2004 and officially recognized as a new mineral two years later. 

Geologists soon noticed that the formula on the sample label matched the faux “kryptonite” shown in a 2006 Superman film, minus the fluorine and the green glow. That pop-culture twist helped the discovery grab headlines, yet the real excitement lies in what the mineral could do for electric vehicles and renewable power storage.

Jadarite occurs as dull, chalky nodules tucked inside fine-grained shale in the Jadar Valley. The host rocks formed in an ancient lake basin rich in volcanic ash, allowing lithium and boron to build up in the pore waters until the mineral crystallized. Those conditions have been found only in Serbia so far, making the deposit both unique and strategically valuable. 

Michael Page, a process chemist at Australia’s Nuclear Science and Technology Organisation (ANSTO), points out that the valley “is considered one of the largest lithium deposits in the world, making it a potential game-changer for the global green energy transition.” […]

Serbian communities are not unanimous in welcoming the mine. Environmental groups warn that alkali-rich tailings could leak into the Jadar River and harm local agriculture. Independent studies have found elevated boron and lithium downstream of exploratory boreholes, fueling weekly protests in Belgrade.

Supporters counter that rigorous water-management plans and sealed tailings cells can limit impacts, and that the economic gains, including thousands of skilled jobs, are hard to ignore. European automakers also see the project as a chance to shorten supply chains now dominated by South American brines and Chinese refiners.

Whether or not the Jadar project reaches full production, the mineral has already altered the critical-minerals map. Its existence proves that lithium can concentrate outside traditional pegmatites and brines, broadening the hunt to basins once dismissed as uneconomic clay.

Researchers are now experimenting with synthetic pathways, seeding gels of silica, borate, and lithium under lake-like conditions to see if jadarite can be grown on demand. Success could pave the way for engineered deposits that bypass mining altogether. For now, though, nature’s one known batch in western Serbia remains the focus of intense scientific, industrial, and public scrutiny.

Adapted from https://www.earth.com/news/jadarite-described-as-earthskryptonite-twin-has-potential-to-replace-fossil-fuels/


In the second paragraph, the text informs that the discovery
Alternativas
Q3758064 Inglês
Jadarite, described as ‘Earth's kryptonite twin,’ has potential to replace fossil fuels 

A plain-white mineral found in western Serbia has a name straight out of the comics and a chemical profile that battery makers crave. Called jadarite, also known as sodium-lithium- boron silicate hydroxide, was first pulled from drill cores in 2004 and officially recognized as a new mineral two years later. 

Geologists soon noticed that the formula on the sample label matched the faux “kryptonite” shown in a 2006 Superman film, minus the fluorine and the green glow. That pop-culture twist helped the discovery grab headlines, yet the real excitement lies in what the mineral could do for electric vehicles and renewable power storage.

Jadarite occurs as dull, chalky nodules tucked inside fine-grained shale in the Jadar Valley. The host rocks formed in an ancient lake basin rich in volcanic ash, allowing lithium and boron to build up in the pore waters until the mineral crystallized. Those conditions have been found only in Serbia so far, making the deposit both unique and strategically valuable. 

Michael Page, a process chemist at Australia’s Nuclear Science and Technology Organisation (ANSTO), points out that the valley “is considered one of the largest lithium deposits in the world, making it a potential game-changer for the global green energy transition.” […]

Serbian communities are not unanimous in welcoming the mine. Environmental groups warn that alkali-rich tailings could leak into the Jadar River and harm local agriculture. Independent studies have found elevated boron and lithium downstream of exploratory boreholes, fueling weekly protests in Belgrade.

Supporters counter that rigorous water-management plans and sealed tailings cells can limit impacts, and that the economic gains, including thousands of skilled jobs, are hard to ignore. European automakers also see the project as a chance to shorten supply chains now dominated by South American brines and Chinese refiners.

Whether or not the Jadar project reaches full production, the mineral has already altered the critical-minerals map. Its existence proves that lithium can concentrate outside traditional pegmatites and brines, broadening the hunt to basins once dismissed as uneconomic clay.

Researchers are now experimenting with synthetic pathways, seeding gels of silica, borate, and lithium under lake-like conditions to see if jadarite can be grown on demand. Success could pave the way for engineered deposits that bypass mining altogether. For now, though, nature’s one known batch in western Serbia remains the focus of intense scientific, industrial, and public scrutiny.

Adapted from https://www.earth.com/news/jadarite-described-as-earthskryptonite-twin-has-potential-to-replace-fossil-fuels/


Based on the information provided by the text, mark the statements below as true (T) or false (F).
( ) Jadarite resembles to some extent a mineral previously depicted in fiction.
( ) Environmentalists support the Jadar project due to its harmless effects.
( ) Experimental work is underway to assess the possibility of producing the mineral upon request.
The statements are, respectively
Alternativas
Q3757728 Inglês
READ TEXT III AND ANSWER THE QUESTION:

TEXT III

Original: Maciços rochosos constituídos por arenitos eólicos muitas vezes são considerados depósitos homogêneos com relação às suas propriedades hidráulicas em função das suas características texturais. Source: https://www.abge.org.br/arquivos/ARTIGO%201%20-%20RevistaABGE-14- 2_Ok.pdf

Virtual Translator: Rock masses made up of aeolian sandstones are often considered homogeneous deposits in relation to its hydraulic properties depending on its textural characteristics.
By opting for “made up of”, the translator has introduced a phrasal verb that is more
Alternativas
Q3757727 Inglês
READ TEXT III AND ANSWER THE QUESTION:

TEXT III

Original: Maciços rochosos constituídos por arenitos eólicos muitas vezes são considerados depósitos homogêneos com relação às suas propriedades hidráulicas em função das suas características texturais. Source: https://www.abge.org.br/arquivos/ARTIGO%201%20-%20RevistaABGE-14- 2_Ok.pdf

Virtual Translator: Rock masses made up of aeolian sandstones are often considered homogeneous deposits in relation to its hydraulic properties depending on its textural characteristics.
In Text III, instead of “depending on”, the translator should have chosen
Alternativas
Q3757726 Inglês
READ TEXT III AND ANSWER THE QUESTION:

TEXT III

Original: Maciços rochosos constituídos por arenitos eólicos muitas vezes são considerados depósitos homogêneos com relação às suas propriedades hidráulicas em função das suas características texturais. Source: https://www.abge.org.br/arquivos/ARTIGO%201%20-%20RevistaABGE-14- 2_Ok.pdf

Virtual Translator: Rock masses made up of aeolian sandstones are often considered homogeneous deposits in relation to its hydraulic properties depending on its textural characteristics.
Virtual Translator: Rock masses made up of aeolian sandstones are often considered homogeneous deposits in relation to its hydraulic properties depending on its textural characteristics.
One of the problems with the translation provided by the virtual translator is
Alternativas
Q3757725 Inglês
TEXT II
“Trench-parallel mid-ocean ridge subduction driven by alongstrike transmission of slab pull”
Source: https://pubs.geoscienceworld.org/geology/issue/52/12

The most adequate translation of “driven” is 
Alternativas
Q3757724 Inglês
READ TEXT II AND ANSWER THE QUESTION:
TEXT II
“Trench-parallel mid-ocean ridge subduction driven by alongstrike transmission of slab pull”
Source: https://pubs.geoscienceworld.org/geology/issue/52/12
In this title, the noun phrase “slab pull” refers to
Alternativas
Q3757723 Inglês
READ TEXT I AND ANSWER THE  QUESTION:

TEXT I

Products and dynamics of lava-snow explosions: The 16 March 2017 explosion at Mount Etna, Italy

Abstract

Volcanic hazards associated with lava flows advancing on snow cover are often underrated, although sudden explosions related to different processes of lava-snow/ice contact can occur rapidly and are only preceded by small, easily underrated precursors. On 16 March 2017, during a mildly effusive and explosive eruption at Mount Etna, Italy, a slowly advancing lava lobe interacted with the snow cover to produce a sudden, brief sequence of explosions. White vapor, brown ash, and coarse material were suddenly ejected, and the products struck a group of people, injuring some of them. The proximal deposit formed a continuous mantle of ash, lapilli, and decimeter-sized bombs, while the ballistic material travelled up to 200 m from the lava edge. The deposit was estimated to have a mass of 7.1 ± 0.8 × 104 kg, which corresponds to a volume of 32.0 ± 3.6 m3 of lava being removed by the explosion. Data related to the texture and morphology of the ejected clasts were used to constrain a model of lava-snow interaction. The results suggest that the mechanism causing the explosions was the progressive build-up of pressure due to vapor accumulation under the lava flow, while no evidence was found for the occurrence of fuel-coolant interaction processes. Although these low-intensity explosions are not particularly frequent, the data set collected provides, for the first time, quantitative information about the processes involved and the associated hazard and suggests that mitigation measures should be established to prevent potentially dramatic accidents at worldwide volcanoes frequented by tourists and with fairly easy access, such as Etna.

Source: GSA Bulletin (2024) 136 (5-6): 2325–2342. Available at https://pubs.geoscienceworld.org/gsa/gsabulletin/article/136/5- 6/2325/628546/Products-and-dynamics-of-lava-snow-explosions-The
According to Text I, the study concludes with 
Alternativas
Q3757722 Inglês
READ TEXT I AND ANSWER THE  QUESTION:

TEXT I

Products and dynamics of lava-snow explosions: The 16 March 2017 explosion at Mount Etna, Italy

Abstract

Volcanic hazards associated with lava flows advancing on snow cover are often underrated, although sudden explosions related to different processes of lava-snow/ice contact can occur rapidly and are only preceded by small, easily underrated precursors. On 16 March 2017, during a mildly effusive and explosive eruption at Mount Etna, Italy, a slowly advancing lava lobe interacted with the snow cover to produce a sudden, brief sequence of explosions. White vapor, brown ash, and coarse material were suddenly ejected, and the products struck a group of people, injuring some of them. The proximal deposit formed a continuous mantle of ash, lapilli, and decimeter-sized bombs, while the ballistic material travelled up to 200 m from the lava edge. The deposit was estimated to have a mass of 7.1 ± 0.8 × 104 kg, which corresponds to a volume of 32.0 ± 3.6 m3 of lava being removed by the explosion. Data related to the texture and morphology of the ejected clasts were used to constrain a model of lava-snow interaction. The results suggest that the mechanism causing the explosions was the progressive build-up of pressure due to vapor accumulation under the lava flow, while no evidence was found for the occurrence of fuel-coolant interaction processes. Although these low-intensity explosions are not particularly frequent, the data set collected provides, for the first time, quantitative information about the processes involved and the associated hazard and suggests that mitigation measures should be established to prevent potentially dramatic accidents at worldwide volcanoes frequented by tourists and with fairly easy access, such as Etna.

Source: GSA Bulletin (2024) 136 (5-6): 2325–2342. Available at https://pubs.geoscienceworld.org/gsa/gsabulletin/article/136/5- 6/2325/628546/Products-and-dynamics-of-lava-snow-explosions-The
When the fragment “were suddenly ejected” is translated into “foram ejetados de forma muito súbita”, the strategy used was 
Alternativas
Q3757721 Inglês
READ TEXT I AND ANSWER THE  QUESTION:

TEXT I

Products and dynamics of lava-snow explosions: The 16 March 2017 explosion at Mount Etna, Italy

Abstract

Volcanic hazards associated with lava flows advancing on snow cover are often underrated, although sudden explosions related to different processes of lava-snow/ice contact can occur rapidly and are only preceded by small, easily underrated precursors. On 16 March 2017, during a mildly effusive and explosive eruption at Mount Etna, Italy, a slowly advancing lava lobe interacted with the snow cover to produce a sudden, brief sequence of explosions. White vapor, brown ash, and coarse material were suddenly ejected, and the products struck a group of people, injuring some of them. The proximal deposit formed a continuous mantle of ash, lapilli, and decimeter-sized bombs, while the ballistic material travelled up to 200 m from the lava edge. The deposit was estimated to have a mass of 7.1 ± 0.8 × 104 kg, which corresponds to a volume of 32.0 ± 3.6 m3 of lava being removed by the explosion. Data related to the texture and morphology of the ejected clasts were used to constrain a model of lava-snow interaction. The results suggest that the mechanism causing the explosions was the progressive build-up of pressure due to vapor accumulation under the lava flow, while no evidence was found for the occurrence of fuel-coolant interaction processes. Although these low-intensity explosions are not particularly frequent, the data set collected provides, for the first time, quantitative information about the processes involved and the associated hazard and suggests that mitigation measures should be established to prevent potentially dramatic accidents at worldwide volcanoes frequented by tourists and with fairly easy access, such as Etna.

Source: GSA Bulletin (2024) 136 (5-6): 2325–2342. Available at https://pubs.geoscienceworld.org/gsa/gsabulletin/article/136/5- 6/2325/628546/Products-and-dynamics-of-lava-snow-explosions-The
The closest translation into Portuguese of “Volcanic hazards associated with lava flows advancing on snow cover are often underrated” is 
Alternativas
Q3757720 Inglês
READ TEXT I AND ANSWER THE  QUESTION:

TEXT I

Products and dynamics of lava-snow explosions: The 16 March 2017 explosion at Mount Etna, Italy

Abstract

Volcanic hazards associated with lava flows advancing on snow cover are often underrated, although sudden explosions related to different processes of lava-snow/ice contact can occur rapidly and are only preceded by small, easily underrated precursors. On 16 March 2017, during a mildly effusive and explosive eruption at Mount Etna, Italy, a slowly advancing lava lobe interacted with the snow cover to produce a sudden, brief sequence of explosions. White vapor, brown ash, and coarse material were suddenly ejected, and the products struck a group of people, injuring some of them. The proximal deposit formed a continuous mantle of ash, lapilli, and decimeter-sized bombs, while the ballistic material travelled up to 200 m from the lava edge. The deposit was estimated to have a mass of 7.1 ± 0.8 × 104 kg, which corresponds to a volume of 32.0 ± 3.6 m3 of lava being removed by the explosion. Data related to the texture and morphology of the ejected clasts were used to constrain a model of lava-snow interaction. The results suggest that the mechanism causing the explosions was the progressive build-up of pressure due to vapor accumulation under the lava flow, while no evidence was found for the occurrence of fuel-coolant interaction processes. Although these low-intensity explosions are not particularly frequent, the data set collected provides, for the first time, quantitative information about the processes involved and the associated hazard and suggests that mitigation measures should be established to prevent potentially dramatic accidents at worldwide volcanoes frequented by tourists and with fairly easy access, such as Etna.

Source: GSA Bulletin (2024) 136 (5-6): 2325–2342. Available at https://pubs.geoscienceworld.org/gsa/gsabulletin/article/136/5- 6/2325/628546/Products-and-dynamics-of-lava-snow-explosions-The
In the fragment “a mildly effusive and explosive eruption”, the adverb is comparable in meaning to
Alternativas
Q3757719 Inglês
READ TEXT I AND ANSWER THE  QUESTION:

TEXT I

Products and dynamics of lava-snow explosions: The 16 March 2017 explosion at Mount Etna, Italy

Abstract

Volcanic hazards associated with lava flows advancing on snow cover are often underrated, although sudden explosions related to different processes of lava-snow/ice contact can occur rapidly and are only preceded by small, easily underrated precursors. On 16 March 2017, during a mildly effusive and explosive eruption at Mount Etna, Italy, a slowly advancing lava lobe interacted with the snow cover to produce a sudden, brief sequence of explosions. White vapor, brown ash, and coarse material were suddenly ejected, and the products struck a group of people, injuring some of them. The proximal deposit formed a continuous mantle of ash, lapilli, and decimeter-sized bombs, while the ballistic material travelled up to 200 m from the lava edge. The deposit was estimated to have a mass of 7.1 ± 0.8 × 104 kg, which corresponds to a volume of 32.0 ± 3.6 m3 of lava being removed by the explosion. Data related to the texture and morphology of the ejected clasts were used to constrain a model of lava-snow interaction. The results suggest that the mechanism causing the explosions was the progressive build-up of pressure due to vapor accumulation under the lava flow, while no evidence was found for the occurrence of fuel-coolant interaction processes. Although these low-intensity explosions are not particularly frequent, the data set collected provides, for the first time, quantitative information about the processes involved and the associated hazard and suggests that mitigation measures should be established to prevent potentially dramatic accidents at worldwide volcanoes frequented by tourists and with fairly easy access, such as Etna.

Source: GSA Bulletin (2024) 136 (5-6): 2325–2342. Available at https://pubs.geoscienceworld.org/gsa/gsabulletin/article/136/5- 6/2325/628546/Products-and-dynamics-of-lava-snow-explosions-The
Based on Text I, mark the statements below as TRUE (T) or FALSE (F).
I) The eruption resulted in no casualties.
II) Fragments were launched high above the edge of the lava.
III) Fuel and coolant interaction caused the explosion at Mount Etna.
The statements are, respectively
Alternativas
Q3753600 Inglês
In English language teaching, some oral activities focus on helping learners organize their ideas, speak fluently, and use intonation naturally while narrating events or retelling personal experiences. These techniques emphasize structure, coherence, and expressiveness, encouraging students to practice rhythm, pronunciation, and creativity as they construct meaning through speech. Which pedagogical strategy represents this approach?
Alternativas
Respostas
2701: D
2702: B
2703: A
2704: C
2705: A
2706: E
2707: B
2708: D
2709: C
2710: C
2711: A
2712: D
2713: E
2714: B
2715: D
2716: A
2717: E
2718: B
2719: C
2720: D