Physical Science Week 7

__________________________ is a force of energy that is made by things moving or vibrating.

• sound

• mass

• gravity

• friction

When two things rub against each other, it creates ____________________________ which slows things down.

• sound

• friction

• force

• power

_____________________________ is how much matter is packed into something.

• gravity

• force

• simple machines

• mass

A force that pulls you towards the Earth is called ____________________________.

• power

• force

• friction

• gravity

______________________________ is the act of moving from one place to another.

• sound

• motion

• force

• mass

How much work you do in time is called _____________________.

• power

• force

• simple machines

• gravity

Something that pushes or pulls things is called ______________.

• force

• power

• gravity

• friction

________________________________________ are machines that make work easier.

• motion

• sound

• simple machines

• power