Unit 5 TEST: FORCES

True or False?

Buoyancy is the ability of objects to sink

• True

• False

There are two types of forces: non-contact forces and ________

What is the name of the is force that attracts or repels iron?

• Gravity

• Magnetism

• Weight

• Friction

___________ can slow down or stop movements.

• Friction

• Buoyancy

• Magnetism

• Gravity

The ability of an object to float depends on its ______

• gravity

• weight

• height

• density

This material is made from petroleum; environmentally unfriendly

• bioplastic

• plastic

What is the name of the material used for medical uses?

• steel

• bioplastics

• dental fillings

• ceramics

One of the elements of an alloy must be a metal.

• True

• False

• It depends.

Brass and steel are not alloys. They are pure elements used to make objects.

• True

• False

Fleece fabric is used to_____

• make t-shirts

• make jeans

• make warm jackets