Level 1 Science - Pressure

What is the unit for pressure?

• Newton per metre

• Newton

• Pascal

• Watt

What is the equation used to calculate pressure?

• pressure= force/mass
• pressure =mass/volume
• pressure=area/force
• pressure=force/area

Pressure decreases when the surface area over which a force is applied increases

• True
• False

Look at the pressure triangle. How do we calculate the area?

• f ÷ a
• f x p
• p x f
• f ÷ p

What pressure does a 4000N horse exert on the ground if each foot is 0.10 m²?

• 40 Pa

• 10000 Pa

• 400 Pa

• 10 Pa

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

• it will exert half the pressure it did before

• it will exert the same pressure it did before

• it will exert twice the pressure it did before

• it will exert four times the pressure it did before

Which exerts more pressure on the thumb?

• A

• B

What is the pressure of a 100N force over an area of 2.0m².

• 0.02 Pa

• 50 Pa

• 500 Pa

• 200 Pa

2 Nm^-2 equals how many Pascals?

• 2 Pa

• 1 Pa

• 3 Pa

• 0.5 Pa

A car has 4 tyres. Each tyre is in contact with a 0.2 m x 0.2 m area of the road. What is the total area of the tyres in contact with the road?

• 1 m²

• 0.8 m²

• 0.4 m²

• 0.16 m²