Science Test - Ch. 3 (4th Grade)

the force of gravity of an object

• mass

• weight

a push or pull on an object

• force

• work

a change in position

• weight

• motion

• collision

movement resulting from force

• work

• motion

• friction

the property that makes matter resist a change in motion

• friction

• inertia

two objects bumping into each other

• collision

• friction

• gravity

the amount of matter an object has

• weight

• mass

• inertia

Like poles of a magnet _______.

• repel

• attract

Opposite poles of a magnet _______.

• repel

• attract.

_______ discovered the laws of motion.

• Archimedes

• Sir Isaac Newton