static and circuit electricity

Ms Jo Jo 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.

The difference between attract and repel is that to attract is to pull something closer and repel is to push something away.

• True
• False

What types of charges attract?

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

The accumulation of excess electric charge on an object is called

• Static electricity 
• Electric discharge
• Resistance
• Circuit 

If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?

• A positive charge.
• A negative charge.
• A neutral charge
• No charge at all

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
• our finger becomes negatively charged

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

Why can you get a shock if you touch a metal doorknob after walking across a wool carpet?

• You have gained electrons; the doorknob has no electrons.
• You have gained neutrons; the doorknob has fewer electrons.
• You have lost electrons; the doorknob has many electrons.
• You have gained electrons; the doorknob has many electrons.

Electric charges that DO NOT move through a current are known as

• Magnetic

• Electric

• Electromagnetism

• Static Electricity

Electric circuits provide energy for light bulbs. Which of these prevents the flow of electrons?

• a circuit that is closed

• A series circuit

• a circuit that is open

• a parallel circuit