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Test Description: Bimonthly exam
Instructions: Answer all questions to get your test result.
1) Characteristics used to classify stars include:
A
color, size, scent and texture.
B
composition and material.
C
color, temperature, size, composition, and brightness.
D
scent and size.
2) The _______________ of visible light is made of the colors red, orange, yellow, green, blue and violet.
A
notation
B
telescopes
C
horses and tails
D
spectrum
3) The ___________includes radio waves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.
A
radiation from stars
B
scientist spectrum
C
electromagnetic spectrum
D
color spectrum
4) This is how scientist call the light you can see:_____________.
A
visible light
B
clear light
C
H-R diagram
D
lightbulb
5) The brightness of a star depends on:____________.
A
it´s color and scent.
B
It´s texture and material.
C
It´s temperature and color.
D
it´s size and temperature.
6) Astronomers often use ___________ to measure distances to nearby stars.
A
measurements
B
telescopes
C
rulers
D
parallax
7) It is born when the contracting gas and dust from a nebula becomes so dense and hot that nuclear fusion starts._____________.
A
stars
B
babies
C
supergiants
D
nebulas and black holes
8) Astronomers use it to describe sizes and distances in the universe, when numbers are too long or too short:
A
numbers
B
rulers
C
scientific notation
D
parallax
9) The distance between the crest of one wave, and the crest of the next wave is called:___________.
A
lenghten
B
wavelenght
C
top part
D
crest to crest distance
10) ________collect and focus light and other forms of electromagnetic radiation.
A
Nets
B
Visible light
C
Telescopes
D
The Milky Way
11) According to this theory, the Universe formed in an instant, billions of years ago, in an enormous explosion.
A
The Big Bang Theory
B
The Big Tang Theory.
C
The theory of life
D
Darwin´s Theory
12) They use a unit called the _____________ to measure distances between stars.
A
centimeters
B
heavy year
C
long year
D
light year
13) Scientist use _________ to classify stars.
A
R-H diagrams
B
Awesome Diagrams
C
H-R system
D
H-R diagrams
14) Most stars are members of groups of two or more stars, called:_____________.
A
star family
B
big stars
C
huge stars
D
star systems
*select an answer for all questions
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