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Sobre suas implicações na prática docente, analise as afirmativas e assinale a alternativa correta.
I. CH₃–CH₂–OH
II. CH₃–COOH
III. CH₃–O–CH₃
IV. CH₃–CH₂–NH₂
V. CH₃–CO–CH₃
Com base na estrutura e nas propriedades desses compostos, analise as afirmativas e assinale a alternativa correta.
I. Ácido sulfúrico;
II. Hidróxido de magnésio;
III. Nitrato de potássio;
IV. Trióxido de enxofre.
Avalie as proposições e assinale a alternativa correta.
Com base nesse arcabouço teórico, analise as afirmativas e assinale a alternativa correta.
C6H12O6 + 6O2 → 6CO2 +6H2O + energia (ATP)
Com base na equação e na linguagem simbólica da Química, analise as afirmativas abaixo.
I. A linguagem química, ao expressar a respiração celular por meio de uma equação balanceada, evidencia o princípio da conservação da matéria, mas não permite interpretar os impactos energéticos ou ambientais do processo;
II. A equação, embora concisa, representa um conjunto de reações bioquímicas altamente reguladas, fundamentais à manutenção da homeostase celular nos organismos aeróbicos;
III. A relação entre glicose e oxigênio, expressa na equação, revela como os elementos químicos presentes nos alimentos e no ar atmosférico estão diretamente ligados à produção de energia vital para os seres vivos;
IV. A compreensão da respiração celular por meio da linguagem simbólica da Química permite associar o metabolismo humano a questões ambientais, como o aumento do CO₂ atmosférico e suas implicações no ciclo do carbono.
Assinale a alternativa correta.
Esse projeto diz respeito a qual abordagem pedagógica?
Essa compreensão, de acordo com os Parâmetros Curriculares Nacionais é central a qual perspectiva teórica?
Qual é a probabilidade de o sistema operar normalmente?
• O ponto A, que representa uma estação meteorológica, com coordenadas A (3,7);
• O ponto B, que indica uma câmera de monitoramento de poluição, com coordenadas B (9,4).
Esses dois dispositivos serão interligados por um cabo aéreo. Sabendo que o custo de instalação do cabo é de R$200,00 por metro, qual será o custo total da instalação, considerando a menor distância entre os pontos (trajeto em linha reta)?
Analise as afirmativas e assinale a alternativa que está de acordo com o referido artigo.
TEXT I
Why do birds sing so loudly in the morning in spring? It’s the ‘dawn chorus’
As spring begins, so does a fresh song at daybreak, unique to the season. Just before the sun rises, birds start singing their melodies, creating a chirpy symphony.
This phenomenon is known as the dawn chorus, and it’s special for a number of reasons: There are more birds singing at this time of year, and they also sing more often. This energetic burst of birdsong is often louder than usual too. The dawn chorus’ early morning explosion of sounds has even inspired multiple poems and songs.
“It's the epitome of spring,” says Jordan E. Rutter, an ornithologist at the American Bird Conservancy. After the long and cold winter, “all of a sudden you have this influx of so many beautiful birds coming back and singing.”
This harmony of birdsong at dawn happens during a fundamental time of the year. The dawn chorus is, in fact, mostly composed of birds of both genders singing to find a mate so they can breed (though males may sing more).
“There is such a large increase in quantity of song by individuals and the collective,” Rutter says. “These birds sing louder to literally be heard. They need to compete with each other as well, and the louder the better in regards to who is the most impressive mate.”
During this time, males also sing to assert their dominance and claim their territory. “Those songs are how they communicate to other males of the same species, or even just other birds and predators in general, and say, ‘This is my home,’” says Rutter.
In the United States and Canada, the dawn chorus can be heard roughly from March through May, when many bird species migrate there from their winter homes to breed. Peak dawn chorus times might depend on where you live, Rutter says. For example, April is peak for the southern U.S., but birds in Washington, D.C., will put on the best show in early May. (Alternatively, in the tropics, the dawn chorus can be heard almost any time of year, as many birds have a prolonged breeding season in those warmer climates.)
Why is it a ‘dawn’ chorus?
But why birds sing in the early morning is still “an open question,” says Mike Webster, an ornithologist at the Cornell Lab of Ornithology. “There's a lot of debate, and I don't think there's any consensus on exactly why it is that everything happens at dawn."
One hypothesis is that weather conditions at daybreak make it easier for birdsong to travel.
“In general, sound travels farther when the air is cooler and more dense. Sound also transmits more clearly (and very slightly faster) when humidity is higher so that details of the song do not degrade as much over distance,” says Heather Williams, a professor at Williams College who has studied the neuroscience of birdsong. She notes that wind may also impede sound transmission. “At dawn, the cooler air results in decreased winds at ground level, so coupled with the higher humidity, sound carries farther and more clearly, with less distortion.”
Extract from
https://www.nationalgeographic.com/animals/article/birds-dawn-chorus (Accessed on 14 April 2025.)
“I need you to support me this afternoon.” The verb “to support” in this context can be changed by the phrasal verb:
TEXT I
Why do birds sing so loudly in the morning in spring? It’s the ‘dawn chorus’
As spring begins, so does a fresh song at daybreak, unique to the season. Just before the sun rises, birds start singing their melodies, creating a chirpy symphony.
This phenomenon is known as the dawn chorus, and it’s special for a number of reasons: There are more birds singing at this time of year, and they also sing more often. This energetic burst of birdsong is often louder than usual too. The dawn chorus’ early morning explosion of sounds has even inspired multiple poems and songs.
“It's the epitome of spring,” says Jordan E. Rutter, an ornithologist at the American Bird Conservancy. After the long and cold winter, “all of a sudden you have this influx of so many beautiful birds coming back and singing.”
This harmony of birdsong at dawn happens during a fundamental time of the year. The dawn chorus is, in fact, mostly composed of birds of both genders singing to find a mate so they can breed (though males may sing more).
“There is such a large increase in quantity of song by individuals and the collective,” Rutter says. “These birds sing louder to literally be heard. They need to compete with each other as well, and the louder the better in regards to who is the most impressive mate.”
During this time, males also sing to assert their dominance and claim their territory. “Those songs are how they communicate to other males of the same species, or even just other birds and predators in general, and say, ‘This is my home,’” says Rutter.
In the United States and Canada, the dawn chorus can be heard roughly from March through May, when many bird species migrate there from their winter homes to breed. Peak dawn chorus times might depend on where you live, Rutter says. For example, April is peak for the southern U.S., but birds in Washington, D.C., will put on the best show in early May. (Alternatively, in the tropics, the dawn chorus can be heard almost any time of year, as many birds have a prolonged breeding season in those warmer climates.)
Why is it a ‘dawn’ chorus?
But why birds sing in the early morning is still “an open question,” says Mike Webster, an ornithologist at the Cornell Lab of Ornithology. “There's a lot of debate, and I don't think there's any consensus on exactly why it is that everything happens at dawn."
One hypothesis is that weather conditions at daybreak make it easier for birdsong to travel.
“In general, sound travels farther when the air is cooler and more dense. Sound also transmits more clearly (and very slightly faster) when humidity is higher so that details of the song do not degrade as much over distance,” says Heather Williams, a professor at Williams College who has studied the neuroscience of birdsong. She notes that wind may also impede sound transmission. “At dawn, the cooler air results in decreased winds at ground level, so coupled with the higher humidity, sound carries farther and more clearly, with less distortion.”
Extract from
https://www.nationalgeographic.com/animals/article/birds-dawn-chorus (Accessed on 14 April 2025.)
TEXT I
Why do birds sing so loudly in the morning in spring? It’s the ‘dawn chorus’
As spring begins, so does a fresh song at daybreak, unique to the season. Just before the sun rises, birds start singing their melodies, creating a chirpy symphony.
This phenomenon is known as the dawn chorus, and it’s special for a number of reasons: There are more birds singing at this time of year, and they also sing more often. This energetic burst of birdsong is often louder than usual too. The dawn chorus’ early morning explosion of sounds has even inspired multiple poems and songs.
“It's the epitome of spring,” says Jordan E. Rutter, an ornithologist at the American Bird Conservancy. After the long and cold winter, “all of a sudden you have this influx of so many beautiful birds coming back and singing.”
This harmony of birdsong at dawn happens during a fundamental time of the year. The dawn chorus is, in fact, mostly composed of birds of both genders singing to find a mate so they can breed (though males may sing more).
“There is such a large increase in quantity of song by individuals and the collective,” Rutter says. “These birds sing louder to literally be heard. They need to compete with each other as well, and the louder the better in regards to who is the most impressive mate.”
During this time, males also sing to assert their dominance and claim their territory. “Those songs are how they communicate to other males of the same species, or even just other birds and predators in general, and say, ‘This is my home,’” says Rutter.
In the United States and Canada, the dawn chorus can be heard roughly from March through May, when many bird species migrate there from their winter homes to breed. Peak dawn chorus times might depend on where you live, Rutter says. For example, April is peak for the southern U.S., but birds in Washington, D.C., will put on the best show in early May. (Alternatively, in the tropics, the dawn chorus can be heard almost any time of year, as many birds have a prolonged breeding season in those warmer climates.)
Why is it a ‘dawn’ chorus?
But why birds sing in the early morning is still “an open question,” says Mike Webster, an ornithologist at the Cornell Lab of Ornithology. “There's a lot of debate, and I don't think there's any consensus on exactly why it is that everything happens at dawn."
One hypothesis is that weather conditions at daybreak make it easier for birdsong to travel.
“In general, sound travels farther when the air is cooler and more dense. Sound also transmits more clearly (and very slightly faster) when humidity is higher so that details of the song do not degrade as much over distance,” says Heather Williams, a professor at Williams College who has studied the neuroscience of birdsong. She notes that wind may also impede sound transmission. “At dawn, the cooler air results in decreased winds at ground level, so coupled with the higher humidity, sound carries farther and more clearly, with less distortion.”
Extract from
https://www.nationalgeographic.com/animals/article/birds-dawn-chorus (Accessed on 14 April 2025.)
E, os limites máximos de emissão serão diferenciados em função:
Conheça nossos planos