Pressure 7th grade

Pressure 7th grade

Multiple Choice

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

Multiple Choice

What is the equation used to calculate pressure?

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

Multiple Choice

Pressure can be measured in Pascales (Pa) or Newtons per square metre.
1 Pa = 1N/m2

• True
• False

Multiple Choice

Pressure is equal to force divided by what

• area
• mass
• time
• distance

Multiple Choice

Pressure is measured in what units

• Newtons
• m/s
• Pascals
• Moles

Multiple Choice

Army tank tracks are useful for travelling through the mud because..

• they decrease the force the vehicle exerts on the ground
• they increase the force the vehicle exerts on the ground
• they decrease the pressure the vehicle exerts on the ground
• they increase the pressure the vehicle exerts on the ground

Multiple Choice

The pressure resulting from a force of 50 N exerted over an area of 5 m² is

• 10 N
• 0.1 N
• 10 N/m2
• 0.1 Pa

Multiple Select

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

• 7000N/m²

• 70N/m²

• 100N/m²

Multiple Choice

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

• 40 N/cm²
• 100 N/cm²
• 400 N/cm²
• 10 N/cm²

Multiple Choice

Pressure is the perpendicular ....................... acting

per unit area.

• force

• mass

• energy

Multiple Choice

The smaller ....................... , the larger the pressure

• area

• length

• height

• volume

Multiple Choice

The reason why we use snowshoes is to

....................... pressure

• increase

• decrease

Multiple Choice

The rectangular block shown in the figure has a

mass of 3600 kg and the area of the base is 9 m².

What is the pressure exerted on the ground?

• 1 kN

• 2 kN

• 3 kN

• 4 kN

Multiple Choice

Calculate the pressure produced by a force of 800 N acting on an area of 2.0 m².

• 400 Pa

• 800 Pa

• 40 Pa

• None of these

Multiple Choice

A force of 1200 N acts on a surface of area 10 cm² normally. What would be the thrust and pressure on the surface?

• 12 × 10⁶ N/m²

• 2 × 10⁶ N/m²

• 1.2 × 10⁶ N/m²

• 1.2 × 10⁴ N/m²

Multiple Choice

A pressure of 10kPa acts on an area of 0.3 m². The force acting on the area will be

• 3000 N

• 30 N

• 3 N

• 300 N

Multiple Choice

A woman has 4 type of shoes. Which will exert the greatest pressure on the ground when she wears them?

Multiple Choice

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

• A large cow with big feet

• A large cow with small feet

• A calf with big feet

• A calf with small feet

Multiple Choice

What is pressure?

• The amount of force exerted on a surface

• The surface area of an object

• The weight of an object

• The force pushing against an object

Multiple Choice

Watch the tyres of tractor rolling. Rear tyres are broader because

• It looks good.

• Broader tyres lessen the muscular Force required.

• Broader tyres lessen the pressure on ground.

• Broader tyres lessen the friction on ground.