Static electricity

A person 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.

If a substance has a higher number of negative charges than positive charges on its surface, what type of charge does it have?

• A positive charge.

• A negative charge.

• A neutral charge

• No charge at all

Electrical charge built up on the surface of an object is called _________________.

• static electricity

• current electricity

• lightning

• electron

What types of charges attract?

• Positive and Positive
• Positive and Neutral
• Negative and Neutral
• Positive and Negative

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.

Where is the safest place to be during a lightning storm?

• In a lake

• Under a tree

• An open field

• Inside a building or a car

If an object has the same number of positive and negative charges, its electrical charge is...

• positive
• negative
• neutral or no charge
• opposite

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

• opposite charges
• like charges

If you rub a glass rod with a piece of silk, the rod becomes positively charged. This means that

• friction destroyed electrons in the rod.
• the silk has become negatively charged.
• protons have moved to the rod.
• glass attracts more protons.