Chapter 6 - Friction and gravity

We can measure forces using a ____________.

• force meter
• ruler

• balance

________ is a force that pulls all objects towards the Earth.

• gravity
• friction

• push

• pull

The unit of measurement to measure force is _______.

• Newton

• centimeter

• litre

• kilogram

Friction can be both _______ and _______.

• helpful

• unhelpful

• happy

• sad

The force that opposes motion is called ________.

• push

• gravity

• friction

• pull

________ surfaces create less friction.

• Rough
• Textured
• Smooth
• Sticky

________ surfaces create more friction.

• Wet
• Smooth
• Flat
• Rough

Force cannot be measured. _____

• True

• False

Friction is a pulling force. ____

• True

• False

Smooth surfaces have no friction at all. ____

• True

• False