WorksheetsLower Secondary: Pressure (Revision)
Total questions: 11
Worksheet time: 19mins
Which is the correct unit of pressure?
N
J
m
N/m²
Look at the pressure triangle. How do we calculate the area?
f÷p
f×p
p×f
f÷p
Mr Wang weights 760 N, each of his foot has the area of 0.25 m2. Calculate the pressure he exerts on the floor while standing on two feet.
pressure= (a) N/m2
Which of the following will cause the pressure to INCREASE?
Increase the force and decrease the area
Increase the force and the area
When you go deeper under water, the water pressure on your body
increases
decreases
stays the same
Check all action(s) that require pressure to work.
Cutting a cake
Bursting a balloon with a needle
Wearing a pair of snow shoes
Rubbing your hands together to create heat
Explain why do we experience greater pressure when we go deeper into the sea?
As we rise higher into the air, we experience lesser pressure. This is due to lesser air molecules above us.
True
False
A pressure of 300 N/m2 is required to cut the cake, if Mr Wang applies 3 N of force using a knife.
Calculate the area in contact.
Area= (a) m2
An elephant exerts 50 000 N/m2 of pressure while standing on its four foot. The total area of its foot is 0.8 m2.
Determine the weight of the elephant.
Weight= (a) N
