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Electromagnetic Spectrum Unit Test Review Flashcards | StudBud
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Electromagnetic Spectrum Unit Test Review
Electromagnetic Spectrum Unit Test Review
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8th Grade EMS review
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Questions
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Answers
1
Which of the following is classified as ionizing radiation?
radio waves
microwaves
visible light
ultraviolet
2
When a star is moving away from us, what is spectral lines shift. What do we call this effect?
Blue Shift
Red Shift
None of these
Big Bang Theory
3
Order the colors of stars from hottest to coolest.
blue, yellow, red, white
blue, white, yellow, red
Red, yellow, white, blue
yellow, red, blue, white
4
What year did the light you saw last night leave a star that is 17 light years away?
2034
1999
2017
2000
5
What does a spectroscope do?
analyzes radio waves from a star
determines the distance of a star
analyzes light from a star
determines the age of a star
6
Which picture best represents gamma rays?
1st
3rd
2nd
4th
7
Why do distant galaxies appear to be red-shifted?
the universe is expanding
the universe is shrinking
distant galaxies only have cooler stars
distant galaxies only have red stars
8
What is the lowest energy electromagnetic wavelength?
visible light
gamma
infrared
radio
9
Which type of radiation is used to treat cancer?
ultraviolet
gamma
infrared
x-ray
10
What type of telescope would be used to detect waves with a frequency of 14 X 10
-13
Hz?
Ultraviolet
Gamma
Microwave
Radio
11
Light years are used to measure ____________ in the universe.
time
distance
none of these
speed
12
What elements make up most stars in the Milky Way galaxy?
Hydrogen & Helium
Hydrogen & Nitrogen
Hydrogen & Carbon
Hydrogen & Oxygen
13
Which subatomic particle is the smallest?
proton
neutron
electron
they are all the same size
14
What happens as a wavelength gets longer?
frequency increases and enrgy decreases
frequency decreases and energy increases
frequency and energy decrease
Frequency and energy increase
15
The protons are located
in the nucleus
outside the nucleus
in the energy levels
in the nuclear membrane
16
What type of telescope would be used to detect waves with a frequency of 13 X 10
2
Hz?
Gamma
Radio
Ultraviolet
Microwave
17
Which picture best represents radio waves?
2nd
4th
1st
3rd
18
What is the correct order for the life-cycle of a high-mass star?
nebula, main sequence, supergiant, black hole
nebula, main sequence, giant, white dwarf
nebula, main sequence, giant, supergiant
nebula, main sequence, supergiant, supernova, neutron star
19
Electrons are located
in the nucleus
various places
in the energy levels
with the protons
20
What type of telescope would be used to see visible light?
optical
ultraviolet
gamma
radio
21
Why is some radiation ionizing?
it has enough energy to remove electrons from atoms
it causes items to glow
it doesn't have enough energy to remove electrons from atoms
it causes solids to become liquids
22
According to the Big Bang Theory,
the universe is expanding
the universe is exciting
the universe is exploding
the universe is exponential
23
In an H-R Diagram, luminosity increases as you
move left to right
move right to left
move top to bottom
move from bottom to top
24
If a star burned out in 1999 that is 200 light years away, when would we notice?
2000
2200
2099
1999
25
What is the mass number for an atom with 5 protons, 7 electrons and 6 neutrons?
11
12
5
10
26
Which of the following types of stars is the youngest?
main sequence
supergiant
white dwarf
red giant
27
What is different between isotopes?
mass of neutrons
mass of protons
the number of protons
number of electrons
