Test
Evolution of the atmosphere
Preguntas del test (7)
1Which of these statements are correct about earths early atmosphere??
- AMost of the atmosphere in early earth was made up of carbon dioxide, there was nearly no oxygen!
- BThe earths atmosphere has always stayed the same, it has always been made up of mainly oxygen!
- CThe earths atmosphere has always stayed the same, it has always been made up of mainly nitrogen!
2The earths atmosphere now is mainly made up of nitrogen!
- AVerdadero
- BFalso
3What was the earths surface originally like??
- AIt was originally like a plane of ice and snow!!
- BIt was originally molten!!
- CIt was the same as it is today!!
4What gases do volcanoes give out when they erupt??
- Acarbon dioxide, water vapour and small amounts of other gases!
- Bnitrogen and carbon dioxide!
- Cnitrogen, water vapour, carbon dioxide and small amounts of other gases!
5As no one was around in earths early atmosphere, how do scientists give an idea of what it was like??
- AThey guess!!
- BThey travel back in time!!
- CThey evaluate dormant volcanoes that have survived that long!!
- DThey use what the atmospheres of other planets are like, Mars and Venus, today!!
6How did the CO2 in earths early atmosphere decrease??
- AThe CO2 dissolved in the oceans that formed!!
- BIt evaporated!!
7Marine organisms also took part in increasing the amount of oxygen in the air!!
- AVerdadero
- BFalso
Información
- Descripción
- Evolution of the atmosphere
- Autor
- pam.hinton61
- Idioma
- English
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