Exploring Forces 1

A force is a push or pull.

• True

• False

Actions involving pulling

• Stretching a rubber band

• Flying a kite

• Lifting books

• All of the above

Actions involving pushing and pulling.

• Shaking a bottle of medicine

• Rubbing palms to keep warm

• Twisting a bottle cap

• All of the above

Other examples of forces

• Frictional force

• Heat energy

• Wind energy

• Geothermal energy

Magnetic force can be an attractive or a repulsive force.

• True

• False

What is gravitational force?

• A force that pushes an object towards the earth.

• A force that pulls an object towards the earth.

What are the effects of forces?

• Change direction

• Stop a moving object

• Speed up a moving object

• All of the above

The SI unit of force is ___________________?

• Kelvin

• grams

• metre

• Newton

How do we measure forces?

• Using a compression spring balance and extension spring balance

• Using a weighing machine

• Using a thermometer

• Using a tape measure

Which is the SI unit for weight?

• km

• kg

• N

• g