Forces and Motion Test Review Quizs

All moving objects have
__________ energy.

• potential

• thermal

• kinetic

• nuclear

________ is how fast an object moves.

• Velocity

• Acceleration

• Speed

• Momentum

A doorknob is an example of a ________ ___________, because it's a machine with few or no moving parts.

• complex machine

• simple machine

• mechanical device

• electrical appliance

An example of friction is rubbing your hands together quickly to make heat or using brakes on a bicycle to stop.

• gravity

• friction

• inertia

• momentum

A ___________ is a tool that measures speed.

• speedometer

• thermometer

• barometer

• altimeter

An object is in motion when it is changing position.

• rest

• motion

• stability

• equilibrium

A _________ is a bar that moves on a fixed point.

• lever

• pulley

• wheel

• axle

Food we eat has stored ____________.

• energy

• water

• protein

• fiber

Most cutting tools, like knives, are simple machines called ___________.

• levers

• pulleys

• wedges

• inclined planes

___________ _____________ are two or more simple machines put together.

• Complex machines

• Compound machines

• Simple machines

• Mechanical systems