Electricity (Think Sheet 20-21)

What is this  red piece in the circuit called?

• wires
• alligator clip
• switch
• none of these choices

In this picture the circuit is_____

• open
• closed
• none of these choices
• both of these choices

In this picture the circuit is ________

• an open circuit
• a closed circuit
• none of these choices
• both of these choices

To make a bulb light up you must have_______.

• a battery
• wires
• a bulb
• all of these

Why is plastic used to cover the wires and make a handle for a switch?

• to make it pretty
• to insulate the wires
• to conduct the elecricity
• none of these choices

Which object could you replace a switch to allow a bulb light up?

• popsicle stick
• rubber band
• paper clip
• none of these choice

Which item is an example of changing electrical energy to light?

• battery
• a light bulb
• a ramp
• a lamp

Which item is an example of changing electrical energy to heat?

• a stove
• a blanket
• a ramp
• a flashlight

Which item is an example of changing electrical energy to sound?

• a television
• an iPod
• a radio
• all of these choices

Ellen could use an electromagnet to pick up_______.

• an envelope
• a plastic spoon
• small metal scissors
• a crayon