Gen Sci 1/2 Practice Final

Front

What produces the magnetic field in a permanent magnet?

Back

Electrons 'spinning' in the same direction.

Front

How do you calculate the speed of a wave?

Back

Speed = Distance / Time.

Front

If a wave travels 200 meters in 5 seconds, what is its speed?

Back

40 meters per second.

Front

What happens if you cut a bar magnet in half?

Back

You get two magnets, each with a North and South pole.

Front

What is velocity?

Back

Velocity is speed in a given direction.

Front

Which calculation best represents a velocity?

Back

20 meters / second.

Front

What is the relationship between electric and magnetic fields?

Back

Opposite poles and charges attract each other.

Front

What is a magnetic field?

Back

A region around a magnet where magnetic forces can be felt.

Front

What is the difference between speed and velocity?

Back

Speed is scalar (magnitude only), while velocity is vector (magnitude and direction).

Front

What happens to the magnetic poles when a magnet is cut?

Back

Each piece becomes a magnet with its own North and South pole.