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Forces In Nature
Test Description: Forces of electricity, gravity, and magnetism
Instructions: Answer all questions to get your test result.
1) Magnetism is a
A
form of electricity
B
form of energy
C
force
D
power
2) What process is the method by which a neutral object obtains an electric charge?
A
convection
B
induction
C
radiation
D
discharge
3) Which is an example of gaining a static charge by conduction?
A
bringing a charged rod near an electroscope
B
shuffling your shoes across a carpet
C
rubbing a balloon against your hair
D
touching your car on a cold day and getting a shock
4) The Sun has more gravity than the other planets in our solar system because the Sun is
A
made of plasma
B
undergoing fusion
C
more massive
D
hotter
5) Andy hid a paper clip in one paper hat. He hid a crayon in another paper hat. Sam held a magnet near each paper hat. What happened?
A
Both hats stayed in their starting positions and didn't move.
B
The hat with the paper clip was pulled towards the magnet.
C
The hat with a crayon was pulled towards the magnet.
D
The hat with a crayon pushed away from the magnet.
6) Where should you expect the magnetic force of the bar magnet to be the strongest and pick up the most paper clips?
A
at both poles
B
in the center of the magnet
C
at the north pole
D
at the south pole
7) What set of objects could you use to demonstrate that an electric current will produce a magnetic field.
A
A battery, an iron nail and a long copper wire.
B
An iron nail, a permanent magnet and a battery.
C
A battery, a coil of wire and a compass.
D
A compass, some paper clips and a battery.
8) Hail stones do a lot of damage when they fall to the Earth and hit homes and cars with great force. They hit with great force because they
A
accelerate as they fall to Earth
B
melt as they fall to Earth
C
are made of ice
D
have a huge mass compared to other falling objects
9) In order to launch a rocket into space, the upward force of the rocket MUST overcome the force of _________, which is pulling it back to Earth.
A
gravity
B
magnetism
C
friction
D
air resistance
10) After turning off the television, you approach it. As you get close, but not touching it, the hairs on your arm start to stand up. This is an excellent example of static charge built up b
A
induction
B
friction
C
convection
D
conduction
11) What would increase the strength of an electromagnet?
A
Yes, but the new attractive force is due to gravity.
B
No, since they are not touching, no force is at work.
C
Yes, even though they are not touching, they are pulling on one another.
D
No, when the magnets are apart, they exert a repulsive force on one another.
12) two magnets will stick to one another when opposite poles align. When these magnets are pulled slightly apart, does the attractive force between them still exist?
A
use fewer coils of wire around a nail
B
use a smaller nail
C
use a battery with more voltage
D
use a battery with less voltage
*select an answer for all questions
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