Final Exam

Which of these has the same acceleration as a car that goes from 10 m/s to 16 m/s in 3 seconds?

• a motorcycle that goes from 15 m/s to 20 m/s in 4 seconds

• a runner who goes from 7 m/s to 10 m/s in 3 seconds

• a bird that goes from 4 m/s to 8 m/s in 2 seconds

• a dog that goes from 8 m/s to 12 m/s in 3 seconds

What is the average speed of this car?

__ m/s

Why is the light bulb not on, in this image?

• the battery is used up

• the bulb is burned out

• the circuit is open

• the circuit is closed

Electric current passing through a wire produces __________.

• a compass

• geographic poles

• a permanent magnet

• a magnetic field around the wire

An electric current is a flow of __________ from one place to another.

What kind of circuit has more than one path for current flow?

• open

• series

• parallel

• conducting

A long, thin wire has __________ resistance than a short, thick wire.

Electrical current is measured in __________.

• volts

• ohms

• watts

• amperes

How do insulators and conductors differ?

• Conductors do not allow an electric current through them.

• Insulators do not allow electrons to pass through them easily.

• Insulators allow protons to pass through them.

• Conductors allow protons to pass through them.

Electrons have what charge?