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Stars And Universe
Test Description: Review HR diagram, red and blue shift, waves and components of universe.
Instructions: Answer all questions to get your test result.
1) A galaxy is moving toward us. Astronomers studying the spectra would notice a shift toward the ____end of the color scpectrum.
A
Orange
B
Yellow
C
Blue
D
Red
2) A galaxy is moving away from us. Astronomers studying the spectra would notice a shift toward the ____end of the color scpectrum.
A
Green
B
Blue
C
Red
D
Yellow
3) The types of waves that can travel through space are called ____ waves.
A
Pretty
B
Electromagnetic
C
Magical
D
Mechanical
4) On the HR diagram, the trend for main sequence stars is -
A
the hotter the star is the brighter it is.
B
the cooler the star is, the brighter it is.
C
the hotter the star is, the dimmer it is.
5) The top of a wave is called the -
A
amplitude
B
trough
C
crest
D
wavelength
6) The distance between the crest of one wave and the crest of the next wave is called the -
A
crest
B
amplitude
C
trough
D
wavelength
7) Which of the following is NOT a galaxy shape?
A
Elliptical
B
Rectangular
C
Spiral
D
Irregular
8) Our star, the Sun, is a medium mass star. It will end its life as a -
A
neutron star
B
black hole
C
supernova
D
white dwarf
9) A star's light takes 125 years to travel from the star to our Earth. How far away is the star?
A
125 astronomical units
B
125 trillion miles
C
125 light years
D
125 years
10) If a star is 250 million light years away, the light we see in the sky tonight is how old?
A
250 trillion years old
B
25 years old
C
250 million years old
D
250 years old
*select an answer for all questions
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