3214033
Descripción
Test por pam.hinton61, actualizado hace más de 1 año
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Creado por pam.hinton61
hace más de 8 años
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Pregunta 1
Pregunta
Which of these statements are correct about earths early atmosphere??
Respuesta
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Most of the atmosphere in early earth was made up of carbon dioxide, there was nearly no oxygen!
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The earths atmosphere has always stayed the same, it has always been made up of mainly oxygen!
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The earths atmosphere has always stayed the same, it has always been made up of mainly nitrogen!
Pregunta 2
Pregunta
The earths atmosphere now is mainly made up of nitrogen!
Respuesta
- True
- False
Pregunta 3
Pregunta
What was the earths surface originally like??
Respuesta
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It was originally like a plane of ice and snow!!
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It was originally molten!!
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It was the same as it is today!!
Pregunta 4
Pregunta
What gases do volcanoes give out when they erupt??
Respuesta
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carbon dioxide, water vapour and small amounts of other gases!
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nitrogen and carbon dioxide!
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nitrogen, water vapour, carbon dioxide and small amounts of other gases!
Pregunta 5
Pregunta
As no one was around in earths early atmosphere, how do scientists give an idea of what it was like??
Respuesta
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They guess!!
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They travel back in time!!
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They evaluate dormant volcanoes that have survived that long!!
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They use what the atmospheres of other planets are like, Mars and Venus, today!!
Pregunta 6
Pregunta
How did the CO2 in earths early atmosphere decrease??
Respuesta
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The CO2 dissolved in the oceans that formed!!
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It evaporated!!
Pregunta 7
Pregunta
Marine organisms also took part in increasing the amount of oxygen in the air!!
Respuesta
- True
- False
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