7P Electricity - Static only

What type of objects allow electrical current to FLOW through them?

• conductors

• circuits

• insulators

• batteries

Similar types of electric charges attract one another.

• True

• False

Curtis uses a wool cloth to give a balloon a negative charge. What will happen if he holds the balloon near the wall, and why?

• The balloon will stick to the wall because a negatively charged object is attracted to an uncharged object.

• The balloon will stick to the wall because a negatively charged object is attracted to another negatively charged object.

• The balloon will not stick to the wall because a negatively charged object idoes not attract an uncharged object.

• The balloon will not stick to the wall because a negatively charged object is repelled by another negatively charged object.

Electrons are found...

• In the atom's nucleus.

• whizzing around the nucleus.

To make a substance POSITIVELY CHARGED, we have to

• add protons

• remove electrons

• adding protons OR taking away electrons

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

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.

Lightning is _____.

• a buildup of neutrons
• harmless
• a high-voltage electric current
• a large discharge of static electricity

Electrons have a __________ charge.

• positive

• negative

• neutral

Protons have a __________ charge.

• positive

• negative

• neutral