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Physical Sciene Review #4
Test Description: Physical Science review - Physics
Instructions: Answer all questions to get your test result.
1) If light traves from a less dense medium, like air, to a more dense medium, like water
A
The light will not travel through water
B
The light will slow, because the particles get in the way
C
The speed of the light will stay the same
D
The light will speed up, light needs particles to travel through
2) As you go from left to right on the EM spectrum
A
The amplitude decreases. No!
B
The frequency decreases
C
The wavelength decreases
D
The energy decreases
3) The highest energy Electromagnetic wave region is
A
Gamma
B
Radio
C
Infrared
D
Invisible
4) Two ways to increase the energy of a wave is to
A
Decrease the frequency, increase the wavelength
B
Increase the wavelength, decrease the amplitude
C
Decrease the amplitude, decrease the frequency
D
Increase the amplitude, decrease the wavelength
5) ROYGBIV
A
Red would have the lowest frequency
B
Red would be the highest energy
C
Green is not one of the colors
D
Violet would have the lowest frequency
6) How can you give an object a positive charge?
A
Protons and electrons must be the same number. Oh wait, then it would be neutral.
B
Transfer electrons to the object. Oh wait, then the object would be negative.
C
Take away electrons, then you have only protons left
D
Transfer protons. Oh wait, protons can't move!
7) Conductors vs. Insulators
A
Conductors allow electons to flow, Insulators resist the flow
B
Conductors resist the flow of electrons, not!
C
Conductors would be plastic, Insulators would be copper
D
Insulators allow electrons to flow, not!
8) Parallel circuits
A
How many blondes does it take to screw in a lightbulb?
B
All the lights go out when one bulb is unscrewed
C
The bulbs are all lined up one after another
D
Allow for multiple paths of electricity to your circuit, thus bulbs would stay lit
9) Electromagnets
A
Can be increased in strength by more coils or more voltage
B
Can't be turned off and on
C
Can't be changed in strength
D
Are permantly magnetic
10) Permantent Magnets
A
The force lines go from North to South, like birds in the winter
B
Need a battery
C
Are useful, because you can turn them off and on
D
If you break a magnet in half it no longer works
*select an answer for all questions
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