Electricity Pretest SurveyElectricity Pretest Survey

1. Which of the follwing natural phenomenon demonstrate force fields over a distance?

Which of the follwing natural phenomenon demonstrate force fields over a distance? a) electricity

b) gravity

c) magnetism

d) all these exihbit force fields

2. For a material to become magnetic what must occur?

For a material to become magnetic what must occur? a) its atoms must be heated

b) its atoms must all align in the same direction

c) its atoms must be metal

d) its atoms must have an electric charge

3. Which of the following is true of electric charges?

Which of the following is true of electric charges? a) opposite charges attract and likes repel

b) neutral charges have equal positive and negative charges

c) losing electrons makes a positive charge

d) all the above are true

4. Which 3 materials below would be enough to build a simple electric circuit?

Which 3 materials below would be enough to build a simple electric circuit? a) string, bulbs, battery

b) string, bulbs, copper wire

c) copper wire, bulbs, battery

d) none of these would be enough

5. What is true about a neutral charge?

What is true about a neutral charge? a) they are mostly negative charges

b) have equal positive and negative charges

c) attract to positive & negative charges

d) both b and c are true of neutral charges

6. Where do magnets show the greatest strength of force?

Where do magnets show the greatest strength of force? a) in the middle sections

b) at the north pole

c) at the south pole

d) at both north and south poles

7. What measures the amount of “push” on electrons through a conductor caused by a difference in charge between two objects?

What measures the amount of “push” on electrons through a conductor caused by a difference in charge between two objects? a) voltage

b) resistance

c) amperage

d) force

8. Why is it safe for a squirrel to run along a high voltage wire?

Why is it safe for a squirrel to run along a high voltage wire? a)the squirrel is much faster than any electric current

b)there is no current in the wire when he runs along it

c)the squirrel is not a conductor of electricity

d)the squirrel isn't grounded so current doesn't affect him

9. Which of the following describe the properties of a parallel circuit?

Which of the following describe the properties of a parallel circuit? a) If one bulb goes out, they all do

b) If one bulb goes out the rest stay lit

c) All bulbs get full voltage and are brighter

d) Both b and c are true of parallel circuits

10. What is a way to increase the strength of an electromagnet?

What is a way to increase the strength of an electromagnet? a) add more voltage

b) add more coils of wire

c) use iron cores

d) all the above

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