10 questions🇬🇧English
🤿 Pressure – Year 8
Physics · Year 8 (KS3) — calculating pressure, pressure in liquids and gases, atmospheric pressure
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Questions
Which equation is used to calculate pressure?
Pressure = mass ÷ area
Pressure = force × area
Pressure = area ÷ force
Pressure = force ÷ area
20s
What is the SI unit of pressure?
Kilogram (kg)
Pascal (Pa)
Newton (N)
Joule (J)
20s
Why do snowshoes stop you sinking into deep snow?
They spread your weight over a larger area
They spread your weight over a smaller area
They make your weight smaller
They make the snow harder
20s
A box with a weight of 600 N rests on an area of 2 m². What pressure does it exert?
1200 Pa
602 Pa
300 Pa
30 Pa
30s
Why does a drawing pin go into a cork board easily when you push its flat head?
The tiny point gives a very low pressure
The pin is lighter than the board
The flat head makes the force bigger
The tiny point gives a very high pressure
30s
Why is a dam built much thicker at the bottom than at the top?
Water pressure decreases with depth
Water pressure increases with depth
Water is less dense at the bottom
Upthrust pushes the dam downwards
30s
What happens to atmospheric pressure as a climber goes higher up a mountain?
It increases because there is more air above
It stays the same at every height
It increases because the air is colder
It decreases because there is less air above
30s
Air is pumped out of a sealed metal can and the can gets crushed. What crushes it?
The gravity acting on the empty can
The greater air pressure outside the can
The air pressure inside pulling the walls in
The upthrust from the air around it
30s
A stone weighs 12 N in air but only 9 N when fully under water. What is the upthrust on it?
12 N
9 N
21 N
3 N
30s
A pressure of 2000 Pa acts on an area of 0.5 m². What force is acting?
1000 N
2000 N
250 N
4000 N
60s