Electrically Charged Objects

Electricity happens with the flow of

• electrons.

• water

• sand

Electricity flows well through "conductors." A good example of a conductor is ___________________.

• metal

• wood

Static electricity can "jump" from the charged object to another object, causing . . .

• static cling (objects sticking together)

• electric discharge (and a shock!)

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

When negative charges on a cloud cause positive charges to build up on the ground, what may happen?

• 
• 

Tags

NGSS.MS-ESS2-5

What method of static charging is shown in this picture

• Polarization
• Friction
• Induction
• Conduction

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NGSS.MS-PS2-3

The girl's hair and the comb are attracting  one another.  The hair and the comb have

• opposite charges
• like charges

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NGSS.MS-PS2-3

Two balloons are hanging from a stick.

One balloon has a positive charge and the other has a negative charge.

How would you expect the balloons to move?

• there would be no movement

• towards each other

• away from each other

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What happens when you touch a metal doorknob after rubbing your shoes on the carpet?

• The doorknob sends a burst of electric current into your body

• Millions of electrons go from your finger into the doorknob

• The doorknob sends millions of electrons into your finger

• Your finger becomes negatively charged

Tags

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

Lightning occurs because ___.

• the negative charges at the bottom of clouds are attracted to the positive charges on the ground.

• the positive charges at the bottom of clouds are attracted to the negative charges on the ground.

• the positive and negative charges inside clouds are attracted to each other

• All of these reasons are correct.

Tags

NGSS.MS-ESS2-5

NGSS.MS-PS2-3