The atmosphere is ________________________!
We live in an __________________________ of air.
The atmosphere is _______________km thick.
What would happen if the Earth has no atmosphere, as in no air?
The atmosphere keeps Earth _________________.
The atmosphere protects Earth from ______________ and _________________.
It is mainly from the ______________________ that our atmosphere was formed.
The 5 layers of the atmosphere are:
______________
______________
______________
______________
______________


The lower the atmospheric pressure, the ________________ you are on land or sky.
10. At Death Valley in California, the air pressure is ____________, meaning there is
more air over your head.
11. Why do your ears always pop on an airplane?
12. When boiling water at a high altitude, it __________________ take as long to
boil.
13. How much does the atmosphere weigh in kilograms?
14. The thermosphere blocks deadly ________________ radiation.
15. The ___________________ is responsible for the weather, rain or snow.
16. We live in the _____________________, a level of the atmosphere.
17. Why are mountaintops colder than the temperature in the city?
18. When the atmosphere keeps Earth warm, it is called the _________________
effect.
19. How thick is the troposphere?
20. The higher you go in the atmosphere, the ___________ air there is available to
breathe.