WorksheetsAtmosphere
Total questions: 4
Worksheet time: 2mins
Name
Class
Date
1.
What is the thickness of the atmosphere?
a)
1000m
b)
5000m
c)
1000km
d)
5000km
2.
How long would you take to reach the ground when you fall down from the top of the atmosphere?
a)
1 minute
b)
2 minutes
c)
10 minutes
d)
30 minutes
3.
19. What will be your speed when you reach the ground dropping from the top of the atmosphere? (Reference: speed of sound = 340 ms-1 )
a)
100ms-1
b)
150ms-1
c)
1250ms-1
d)
2500ms-1
4.
What happen to the things in the earth if the percentage of oxygen is suddenly increases to 25% by volume in air?
a)
Lining things will die as too much respiration occurs.
b)
Photosynthesis will stop as too much oxygen is there.
c)
Most of the things start to burn or explode.
d)
Animals can dive without using oxygen cylinder.
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