electricity

Which of these best completes the circuit?

• rubber band
• metal nail
• leather shoelace
• wooden toothpick

A fifth grade class constructed this circuit.  Which of these objects most likely made the light glow when connected to points X and Y?

• plastic straw
• cotton string
• aluminum foil
• rubber eraser

Which of these substances conducts electricity the best?

• wood
• brick
• copper
• plastic

What material would be safest to use as an insulator to cover electrical wires?

• rubber
• tin
• aluminum
• water

This instrument can be used to see if materials conduct electricity.  Which of these groups contains items that could all conduct electricity to complete the circuit?

• rubber ball, plastic comb, nail
• paper clip, penny, screw
• cork, dollar bill, tweezers
• pencil, eraser, spoon

The energy used to move most bicycles is an example of what type of energy?

• electrical 
• mechanical
• chemical
• nuclear

Which form of energy is best shown in this picture?

• mechanical
• electrical
• chemical
• nuclear

Bits of paper are attracted to the surface of this balloon.  What attracts the paper pieces to the balloon?

• Friction
• Static Electricity
• Magnetism
• Potential Energy

In this picture, the iron filings show the shape of the magnetic --

• axis
• core
• field
• pole

Will the light bulb in this circuit light and why/why not?

• yes, because it has two batteries
• no, because the switch is open
• yes, because it is in a circuit
• no, because the bulb is burned out