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Q 1/28
Score 0
a force by which objects are attracted to other objects or repelled by other objects
30
electricity
weight
gravity
magnetism
Q 2/28
Score 0
to pull toward
30
attract
push
stablize
repel
28 questions
Q.
a force by which objects are attracted to other objects or repelled by other objects
1
30 sec
Q.
to pull toward
2
30 sec
Q.
pushes an object away
3
30 sec
Q.
the area or power around a magnet
4
30 sec
Q.
a magnet that can be turned on and off by using electricity
5
30 sec
Q.
a device that uses a magnet to generate electricity
6
30 sec
Q.
- ends of a magnet
7
30 sec
Q.
A magnet made of material that keeps its magnetism.
8
30 sec
Q.
a magnet made from a material that easily loses its magnetism or can be turned on and off
9
30 sec
Q.
a piece of iron or steel that attracts certain metals
10
30 sec
Q.
an instrument with a needle that points north and used to determine directions
11
30 sec
Q.
energy in motion
12
30 sec
Q.
stored energy
13
30 sec
Q.
energy cannot be created or destroyed it can only change forms
14
30 sec
Q.
the region around a magnet where the magnetic force is exerted
15
30 sec
Q.
The ends of a magnetic object, where the magnetic force is strongest.
16
30 sec
Q.
A current carrying insulated wire wrapped around an iron core
17
30 sec
Q.
The ability to do work or cause change
18
30 sec
Q.
A single unit used to generate or store electrical energy - battery
19
30 sec
Q.
The rotating (spinning) part of your motor
20
30 sec
Q.
The 2 contact points on the sides of the dowel. Electricity flows in and out of the electromagnet at these points. The 2 points work together to change the direction of the electricity.
21
30 sec
Q.
Two pieces of flat metal that "brush" up against the commutator. As the armature turns, the brushes cause the polarity of the armatre to change, keeping the motor running smoothly.
22
30 sec
Q.
Which is the best factor to increase the strength of the electromagnet?
23
30 sec
Q.
What is the purpose of coiling the wire around the nail?
24
30 sec
Q.
Changing the direction of the current, (flipping the battery),
25
30 sec
Q.
Which of the following is an example of how electromagnets are different than permanent magnets?
26
30 sec
Q.
The connection that Hans Oersted discovered between magnetism and electricity is
27
30 sec
Q.
Hans Oersted discovered that moving electrons create
