Pressure on Solids

If an object's surface area is smaller does it create more or less pressure?

• a. More

• b. Less

• c. The same

What is pressure?

• a.The amount of force exerted on a surface

• b. The surface area of an object

• c. The weight of an object

A person weighs 700N and their feet have a surface area of 0.1m². How much pressure is exerted?

• a. 7000N/m²

• b. 70 N/m²

• c. 100N/m²

If you're walking in snow why would you wear boots instead of high heels?

• a. Because boots have a higher surface area making the pressure less and stopping you from sinking.

• b. Because it's more comfortable

• c. No, high heels are better

State the direction at which pressure acts?

• a. 420^o

• ab. 180^o

• c. 90^o

What is the equation used to calculate pressure?

• a. pressure= force/mass

• b. pressure =mass/volume

• c. pressure=area/force

• d. pressure=force/area

What pressure does a 4000N horse exert on the ground if each foot is 10cm²?

• a. 40 N/cm²

• b. 100 N/cm²

• c. 400 N/cm²

• d. 10 N/cm²

If the horse reared up on 2 legs what effect would it have on the pressure?

• a. it will exert half the pressure it did before

• b. it will exert the same pressure it did before

• c. it will exert twice the pressure it did before

• d. it will exert four times the pressure it did before

Which of these animals would probably cause the greatest pressure on the ground?

• a. A fat cow with big feet

• b. A fat cow with small feet

• c. A calf with big feet

• d. A calf with small feet

Which situation produces more force on the floor?

• a. standing on one foot

• b. standing on two feet

• c. standing on four feet

• d. all produce the same force