Prova
66 questões da prova de 2016 de Centro de Educação Superior a Distância do Estado do Rio de Janeiro (CEDERJ), em História, Geografia, Biologia, Português e mais matérias. Cada uma tem página própria, com enunciado completo, alternativas e gabarito — e dá para responder na própria página.
Identifique um dos mais emblemáticos
abolicionistas brasileiros. Engenheiro, nascido na Bahia,
foi também um dos fundadores da Sociedade Brasileira
Contra a Escravidão e recebeu como homenagem a
colocação de seu nome numa das galerias de um dos
tuneis urbanos da cidade do Rio de Janeiro.
Observe a imagem a seguir.
No final de 2015, foi confirmada pelo Ministério da Saúde a relação entre um vírus, transmitido por mosquitos, e uma má-formação do cérebro de bebês. Essa doença, que provoca sintomas como febre, dor de cabeça e no corpo e manchas avermelhadas, é causada pelo vírus da
(Adaptado de:http://www.bbc.com/portuguese/noticias/2016/01/
160127)
A new planet in our neighborhood - how likely is life there?
By Don Lincoln, August 24, 2016
Scientists working at the European Southern Observatory (ESO), using the La Silla telescope, claim to have discovered the closest exoplanet to Earth. Exoplanet means planets orbiting stars other than the Sun. Most of them are huge planets orbiting very near their star. The newly discovered planet, which orbits Proxima Centauri, a star within the so-called “habitable zone”, has been named Proxima b.
Proxima Centauri is a red dwarf, which is the most common type of star in the galaxy. Red dwarfs are much smaller than our Sun, and are very dim. For instance, in the visible spectrum that we use to see, Proxima Centauri gives off 0.0056% as much light as the Sun.
So what about life? Are there any chances that an alien lizard might bask in Proxima Centauri’s light or try to find shade under an alien tree? Dr. Guillem Anglada-Escudé, co-author of the research from London University, believes that “there is a reasonable expectation that this planet might be able to host life”
But this belief is not consensual as other scientists think the prospect of life is improbable. Although the temperature of the planet is thought to be such that liquid water could exist, it is unlikely that Proxima b is habitable, as the planet is subject to stellar wind pressures of more than 2000 times those experienced by Earth from the solar wind. These winds would likely blow any atmosphere away, leaving the undersurface as the only vaguely habitable location on that planet. You shouldn’t imagine, thus, a lush and verdant world, with lovely blue waters, sandy beaches and green plants.
So, what’s the bottom line? First, the discovery is extremely exciting. The existence of a nearby planet in the habitable zone will perhaps increase the interest in efforts like Project Starshot, which aims to send microprobes (instruments that apply a stable and wellfocused beam of charged particles -electrons or ions- to a sample) to Proxima Centauri. On the other hand, Proxima b is unlikely to be a haven for people trying to escape the ecological issues of Earth, so we should not view this discovery as a way to ignore our own ecosystem.
Adapted from: < http://edition.cnn.com/2016/08/24/opinions/nearbyplanet-opinion-lincoln/> Access Oct. 2016.
Glossário:
claim: afirmar; dwarf: anão; dim: opaco; give off: emitir;
lizard: lagarto; bask: aquecer-se; belief: crença; wind:
vento; undersurface: camada inferior; lush: viçoso;
bottom line: aspecto fundamental; aim: visar/ter por
objetivo; sample: amostra; haven: refúgio.
Read the text again and answer question
According to the text, some scientists, differently
from Dr. Guillem Anglada-Escudé’s opinion, believe that
the
A new planet in our neighborhood - how likely is life there?
By Don Lincoln, August 24, 2016
Scientists working at the European Southern Observatory (ESO), using the La Silla telescope, claim to have discovered the closest exoplanet to Earth. Exoplanet means planets orbiting stars other than the Sun. Most of them are huge planets orbiting very near their star. The newly discovered planet, which orbits Proxima Centauri, a star within the so-called “habitable zone”, has been named Proxima b.
Proxima Centauri is a red dwarf, which is the most common type of star in the galaxy. Red dwarfs are much smaller than our Sun, and are very dim. For instance, in the visible spectrum that we use to see, Proxima Centauri gives off 0.0056% as much light as the Sun.
So what about life? Are there any chances that an alien lizard might bask in Proxima Centauri’s light or try to find shade under an alien tree? Dr. Guillem Anglada-Escudé, co-author of the research from London University, believes that “there is a reasonable expectation that this planet might be able to host life”
But this belief is not consensual as other scientists think the prospect of life is improbable. Although the temperature of the planet is thought to be such that liquid water could exist, it is unlikely that Proxima b is habitable, as the planet is subject to stellar wind pressures of more than 2000 times those experienced by Earth from the solar wind. These winds would likely blow any atmosphere away, leaving the undersurface as the only vaguely habitable location on that planet. You shouldn’t imagine, thus, a lush and verdant world, with lovely blue waters, sandy beaches and green plants.
So, what’s the bottom line? First, the discovery is extremely exciting. The existence of a nearby planet in the habitable zone will perhaps increase the interest in efforts like Project Starshot, which aims to send microprobes (instruments that apply a stable and wellfocused beam of charged particles -electrons or ions- to a sample) to Proxima Centauri. On the other hand, Proxima b is unlikely to be a haven for people trying to escape the ecological issues of Earth, so we should not view this discovery as a way to ignore our own ecosystem.
Adapted from: < http://edition.cnn.com/2016/08/24/opinions/nearbyplanet-opinion-lincoln/> Access Oct. 2016.
Glossário:
claim: afirmar; dwarf: anão; dim: opaco; give off: emitir;
lizard: lagarto; bask: aquecer-se; belief: crença; wind:
vento; undersurface: camada inferior; lush: viçoso;
bottom line: aspecto fundamental; aim: visar/ter por
objetivo; sample: amostra; haven: refúgio.
Leia o texto e responda à questão.
De acordo com o texto, o brilho da estrela Proxima
Centauri é
A new planet in our neighborhood - how likely is life there?
By Don Lincoln, August 24, 2016
Scientists working at the European Southern Observatory (ESO), using the La Silla telescope, claim to have discovered the closest exoplanet to Earth. Exoplanet means planets orbiting stars other than the Sun. Most of them are huge planets orbiting very near their star. The newly discovered planet, which orbits Proxima Centauri, a star within the so-called “habitable zone”, has been named Proxima b.
Proxima Centauri is a red dwarf, which is the most common type of star in the galaxy. Red dwarfs are much smaller than our Sun, and are very dim. For instance, in the visible spectrum that we use to see, Proxima Centauri gives off 0.0056% as much light as the Sun.
So what about life? Are there any chances that an alien lizard might bask in Proxima Centauri’s light or try to find shade under an alien tree? Dr. Guillem Anglada-Escudé, co-author of the research from London University, believes that “there is a reasonable expectation that this planet might be able to host life”
But this belief is not consensual as other scientists think the prospect of life is improbable. Although the temperature of the planet is thought to be such that liquid water could exist, it is unlikely that Proxima b is habitable, as the planet is subject to stellar wind pressures of more than 2000 times those experienced by Earth from the solar wind. These winds would likely blow any atmosphere away, leaving the undersurface as the only vaguely habitable location on that planet. You shouldn’t imagine, thus, a lush and verdant world, with lovely blue waters, sandy beaches and green plants.
So, what’s the bottom line? First, the discovery is extremely exciting. The existence of a nearby planet in the habitable zone will perhaps increase the interest in efforts like Project Starshot, which aims to send microprobes (instruments that apply a stable and wellfocused beam of charged particles -electrons or ions- to a sample) to Proxima Centauri. On the other hand, Proxima b is unlikely to be a haven for people trying to escape the ecological issues of Earth, so we should not view this discovery as a way to ignore our own ecosystem.
Adapted from: < http://edition.cnn.com/2016/08/24/opinions/nearbyplanet-opinion-lincoln/> Access Oct. 2016.
Glossário:
claim: afirmar; dwarf: anão; dim: opaco; give off: emitir;
lizard: lagarto; bask: aquecer-se; belief: crença; wind:
vento; undersurface: camada inferior; lush: viçoso;
bottom line: aspecto fundamental; aim: visar/ter por
objetivo; sample: amostra; haven: refúgio.
Leia o texto e responda à questão.
Segundo o texto, Proxima Centauri é uma estrela
O mercúrio é um metal prateado que, em temperatura ambiente, é líquido e inodoro. Quando a temperatura é aumentada, transforma-se em vapor tóxico e corrosivo. Trata-se de produto perigoso à saúde quando inalado, ingerido ou em contato, causando irritação na pele, olhos e vias respiratórias. Uma forma de obtenção de mercúrio se dá por ustulação do sulfeto de mercúrio II (ou cinábrio) segundo a reação:
HgS + O2 → Hg + SO2
O hélio é um gás monoatômico, incolor e inodoro,
que apresenta o menor ponto de evaporação de todos os
elementos químicos, e só pode ser solidificado sob
pressão elevada. Embora seja o segundo elemento
químico em abundância no universo, encontram-se, na
atmosfera terrestre, apenas traços provenientes da
desintegração de alguns de seus elementos. Em alguns
depósitos naturais de gás, é encontrado em quantidade
suficiente para a sua exploração. Estima-se que uma
reserva encontrada na Tanzânia contenha mais de 15
bilhões de metros cúbicos desse gás.
Considerando a densidade He = 0.18 kg/m³ , indique o número de átomos do gás hélio existente na reserva.
Thomas Müntzer (1489-1525), um dos primeiros teólogos alemães na era da Reforma, se tornou lider rebelde na época da Guerra dos camponeses.
A Guerra Camponesa, liderada por Thomas
Müntzer, em 1524, tinha como principal objetivo a
