Y8 Atmosphere Flashcards
How much oxygen is in the air?
21%
How much Nitrogen is in the air?
78%
How much carbon dioxide is in the air?
0.036%
What is the bottom layer of the atmosphere called?
The troposphere.
What is the layer of the atmosphere that keeps out lots of the Suns heat?
O Zone.
What is the second layer of the atmosphere called?
The stratosphere.
What is the third layer of the atmosphere called?
The mesosphere.
What is the fourth layer of the atmosphere called?
The thermosphere.
What is the highest layer of the atmosphere called?
The ionosphere.
Why are there holes in the Ozone?
Because gases like carbon monoxide are being created by us and they make a hole in the Ozone.
What happens if there is a hole in the Ozone?
We will burn to death as the Ozone protects us from heat.
How long ago were the oceans formed?
Billions of years.
What did the oceans use to be?
Gas/Steam/Water vapour.
When did the oceans become water?
When the Earth cooled down by 100 degrees Celsius.
What was the Earth like 4 billion years ago?
It was a large hot rock with no water.
