Yong Revision T4 Y7

Forces are measured in:

• Newtons (N)

• Kilograms (kg)

• Metres (m)

• Joules (J)

Friction is defined as:

• Force between two electrically charged objects

• Force between two surfaces that are sliding past each other

• Force transmitted through a rope or wire when pulled

• Force that attracts any object with mass

Which of the following is a contact force?

• Magnetic force

• Gravity

• Electrostatic force

• Friction

The force acting on a rope during a tug-of-war is

• Spring

• Tension

• Gravity

• Friction

Which of the following is a characteristic of a Class 1 lever?

• Effort is between the fulcrum and load

• Load is between the fulcrum and effort

• Fulcrum is between the effort and load

• Not a lever

What class of lever is a seesaw?

• Class 1

• Class 2

• Class 3

• Not a lever

What class of lever are ball throwers?

• Class 1

• Class 2

• Class 3

• I don't know

What class of lever are spear throwers?

• Class 1

• Class 2

• Class 3

• Not a lever

What type of force is exerted by a compressed spring?

• Gravitational force

• Magnetic force

• Spring force

• Electrostatic force

Which of the following is an example of a non-contact force?

• Friction

• Tension

• Magnetic force

• Normal force