The structure of the atmosphere
Answers are for parents and teachers.
1
Write in which layer of the atmosphere clouds, the ozone layer and polar lights are found.
Clouds – the troposphere; the ozone layer – the stratosphere; polar lights – the upper layers (thermosphere).
2
If the surface temperature is +18 °C, what is it at 3 km (falling 6 °C per km)?
0
3
Of 100 air particles, 78 are nitrogen and 21 oxygen. How many remain?
1
4
Write three sources of air pollution and one way to reduce it.
For example: car exhaust, factory smoke, burning rubbish; reduce by planting trees and using public transport.
5
Why does breathing become harder with height?
Because the air becomes thinner and there is less oxygen.