2nd 9 weeks Exam Review

Front

Electromagnet

Back

A metallic core like iron wrapped by coils of wire carrying electrical current.

Front

If the number of coils around the nail increases in the electromagnet, what will happen to its strength?

Back

The strength will increase

Front

If a magnet is cut into unequal size pieces, how many north and south poles will each of the pieces have?

Back

Each piece will have one north and one south pole.

Front

What would be the charge on the balloon after rubbing it on a piece of wool?

Back

Negative

Front

During a lab investigation, students touched an uncharged piece of metal with a positively charged glass rod. Which method was the electric charge transferred by?

Back

Conduction

Front

What conclusion can you draw from your data about the strength of the electric field and distance?

Back

The strength of the electric field is strongest at a short distance.

Front

Which set of materials would work in an experiment to charge one material positively and another negatively using friction? Options: Vinyl and wool, Cotton and glass, Polyester and rubber, Human hair and paper

Back

Vinyl and wool

Front

Difference in speed illustrated by Graph A and Graph B?

Back

Graph A: constant speed; Graph B: increasing speed.

Front

Which car is NOT moving based on the graph?

Back

Car A because the object has zero slope

Front

Which line segment indicates that the object is slowing down? Options: Line segment AB, Line segment AO, Line segment BC, Line segment CD

Back

Line segment BC