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