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- 1. Multiple ChoiceWhat is the difference between a conductor and an insulator?An insulator allows electricity to flow through it easily and a conductor does notA conductor allows electricity to flow through it easily and an insulator does not.An insulator is magnetic and a conductor is notA conductor is magnetic and an insulator is not
- 2. Multiple Choice
All of the following are conductors except _______.
silver spoon
copper wire
iron nail
plastic spoon
- 3. Multiple ChoiceWhat object would best complete this circuit?A batterya peice of yarnan insulatora conductor
- 4. Multiple ChoiceThe plastic covering is there to:Provide a conductor for electrical energy to flow.Provide an insulator so that electrical energy will not pass outside of the wires.Provide a conductor so that electrical energy can NOT flow.Provide an insulator so that electrical energy can flow.
- 5. Multiple ChoiceWater is a insulator.TrueFalse
- 6. Multiple Choice
Why do birds fluff up their feathers, especially in winter?
to appear larger to predators
to get ready to combat a competitor
to trap air, which acts as an insulator to keep them warm
to look like the angriest bird ever
- 7. Multiple Choice
If you look at a single hair of a polar bear under a microscope, you will see that it is hollow on the inside, like a straw. What purpose does this serve?
to make the polar bear lighter
to trap air to insulate them from the cold
so they won't be so heavy
so they will be able to swim
- 8. Multiple Choice
What kind of energy does a rollercoaster at the top of a hill have?
kinetic energy
chemical energy
potential energy
no energy
- 9. Multiple Choice
Which is the most concentrated solution?
100 mL water with 20 grams sugar
50 mL water with 20 grams sugar
200 mL water with 20 grams sugar
150 mL water with 20 grams sugar
- 10. Multiple Choice
On Earth, why does a feather fall slower than a brick?
it is bigger
it is slowed by air resistance
it is smaller
it is lighter
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