Magnets and Motion
Name______________________!!
!
!
!
Date_________________
Pretest ______
Posttest ______
Fill in the correct answer using a science vocabulary word from the box.
charge, static electricity, electric fields, electric current, circuit, electric cell,
conductor, insulator, resistor, series circuit, parallel circuit, magnet,
magnetic pole, magnetic fields, electromagnet
1. A pathway for current is called a ______________________.
2. _____________and____________ are similar because they are both areas where
forces can act without objects touching.
3. Current passes easily through a _________________but doesnʼt pass easily
through an__________________.
4. A core wrapped in a wire that is carrying a current is called an________________.
5. A measure of the extra charges that are on an object is called________________.
6. A material that resists the flow of current is called a ___________________.
7. An_______________is a flow of charges.
8. In a _____________, taking out one light does not turn off the whole circuit.
9. The charge tat stays on an object is called___________________.
10.A_______________attracts objects made of iron or steel.
11.A_______________has only one path for the current.
12.Energy to move current through a circuit is supplied by an________________.
13.A________________is where a magnetʼs pull is strongest.
Circle the letter of the best choice.
14. An object has a___________charge if it has extra positive charges.
A.large! !
B.neutral! !
C.negative
D.positive
15. The ends of an electromagnet that are useful are called__
A.cores! !
B.loops! !
C.poles
D.wires
16. How many poles does a magnet have?
A.none! !
C.two
B.one! !
D.four
17. What supplies energy in an electric circuit?
A.conductors ! C.resistors
B.electric cells! D.switches
18. If the electric field of two charged objects form a closed patter of field lines, the
lines, the objects are____________charged.
A.negatively !
B.positively !
C.neutrally
D.oppositely
Complete the drawing of the bar magnet by labeling the poles and drawing the magnetic
lines of force around the magnet.