1. Energy gives our muscles the strength to do things.

• TRUE

• FALSE

The sun is our biggest source of energy.

• TRUE

• FALSE

3. KINETIC energy is the "energy in motion".

• TRUE

• FALSE

How can it be explained that someone's hair can stick to a balloon?

• There is static electricity.

• There is too much dust in the air.

• The person needs to wash his hair.

Tags

NGSS.3-PS2-3

Opposite charges _______________.

• attract

• repel

• nothing changes

Tags

NGSS.3-PS2-3

Like charges _______________.

• attract

• repel

• nothing changes

Tags

NGSS.3-PS2-3

What is the kinetic energy?

• It is a powerful energy
• It is motion energy
• It is stored energy
• It is not a type of energy

Tags

NGSS.4-PS3-1

Electricity is a type of ___.

• work

• energy

• machines

• electric

We use refrigerator to ___

• cook our food

• to wash our clothes

• keep our food cold

• to make water hot

We use ___ to make machines work.

• water

• electricity

• sun

• machines