Which is an example of a non-contact force?

• Push

• Pull

• Magnetism

• Friction

Tags

NGSS.MS-PS2-5

The buildup of charges on an object is called:

• positive charge
• static charge
• negative charge
• static discharge

A force that pushes objects away from each other

• electrical charge

• attraction

• force

• repulsion

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Teacher Tass rubbed two balloons with a piece of wool. What will happen when the balloons are brought near each other?

• The balloons will repel each other.
• The balloons will attract each other.
• The balloons will become positively (+) charged.
• The balloons will pop.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the following is caused by static electricity?

• a stove getting hot when it is turned on
• a magnet being attracted to a refrigerator
• a lightning strike during a storm
• a light bulb coming on when a switch is turned on

Sandra rubs her socks along the wool carpet as she walks across her house. She grabs onto a metal chair. What will most likely happen as she touches the chair?

• The charge will disappear.

• The chair will repel her.

• She will get a light shock.

• She will build up more charge.

Which of these is an example of static electricity?

• A piece of metal is repelled by another piece of metal.

• A current runs through a wire and a light bulb lights up.

• A person is shocked by sticking a fork in a toaster oven.

• A person's hair stands up straight after taking off a sweater.

The temperature outside can change very rapidly. This is caused by ______________.

• light energy
• sound energy
• mechanical energy
• heat energy

Tags

NGSS.MS-ESS2-5

NGSS.MS-PS3-4

If the radio is on in the car, what form of energy allows you to hear the music?

• light energy
• sound energy
• mechanical energy
• heat energy

What source of energy does a campfire provide?

• sound energy
• mechanical energy
• heat energy
• heat and light energy