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Astronomy Review
Test Description: Basic Astronomy Review Questions
Instructions: Answer all questions to get your test result.
1) In the 1600’s Copernicus and Galileo believed that the earth and other planets orbited the sun. Why were their ideas not accepted at first?
A
Their claims could not be verified by the instruments of the time.
B
Their claims contradicted the most popular ideas at that time.
C
They had no good research to support their claims.
D
Their books were not published until after their deaths.
2) Which of the following is an example of technology?
A
the moon's orbit
B
space probe photographs of distant planets
C
the Earth’s gravitational constant
D
chemical composition of Moon rocks
3) Why was the discovery of moons orbiting Jupiter a significant event?
A
It proved that not everything revolved around the earth.
B
we discovered geological activity on another world.
C
it made Galileo a popular astronomer.
D
It proved that astronomy was a useful science.
4) What two atoms make up the majority of the mass in our universe, and perform nuclear fusion in our sun?
A
Hydrogen and Helium
B
Hydrogen and Carbon
C
Neon and Helium
D
Iron and Carbon
5) Why does the Moon only have 1/6 of the Earth's gravity?
A
it has no atmosphere
B
it is not as massive as Earth
C
it is made of basalt
D
it is so far away from the earth
6) What causes the earth's seasons?
A
the tilt of the earth's axis
B
the elliptical orbit of the earth
C
the sun is brighter in the summer
D
the distance to the sun
7) Which two factors combine together to cause an object to remain in a stable orbit?
A
heat and electricity
B
gravity and inertia
C
fusion and fission
D
mass and magnetism
8) Why does the earth experience day and night?
A
the earth is tilted on its axis
B
the earth rotates on its axis
C
the earth revolves around the sun
D
the moon revolves around the earth
9) We know that Mercury is the closest planet to the sun. Why then is Venus hotter than Mercury?
A
Mercury's clouds reflect heat.
B
Mercury has no atmosphere.
C
Mercury is too small to catch heat.
D
Mercury is in Venus' shadow.
10) The Earth, the moon, Venus and Mars are all made of similar elements. What factors contribute to the existence of life on Earth while the other neighboring planets and moons are lifeless?
A
The tilt of the axis is different from that of the Earth on other planets and moons.
B
Liquid water and a protective atmosphere are found on Earth and not on the others.
C
The laws governing the behavior of atoms and molecules is different here than elsewhere.
D
Earth has active tectonic plates that continue to create and destroy mountains and basins.
11) Why is it theoretically possible to fly through the upper layers of Jupiter and Saturn?
A
internal pressures are very low
B
they are fusing inside
C
they are not solid
D
they have no gravity
12) Which of the following planets is about the same size of our Earth, and has a thick atmosphere which makes it very hot?
A
Jupiter
B
Mars
C
Venus
D
Pluto
13) Mars and Earth receive about the same amount of solar radiation. Why than does the Earth have a perfect temperature range for life, but Mars does not?
A
The Earth is tilted on its axes and gives us all four seasons.
B
Earth has a hot interior core, and heats up our planet from the inside.
C
The red surface of Mars absorbs too much solar radiation and is too hot.
D
Mars is too cold because its atmosphere is too thin to hold in heat.
14) Which of the following is the temperature of the Sun’s core?
A
2,000,000 degrees Centigrade
B
15,000,000 degrees Fahrenheit
C
15,000,000 degrees Centigrade
D
2,000,000 degrees Fahrenheit
15) Compared to the outer planets…
A
The Terrestrial planets are more likely to be composed of gas and ice.
B
The Inner planets have many more moons.
C
The Terrestrial planets have thinner atmospheres.
D
The Inner planets have greater mass and warmer temperatures.
16) Venus
A
Is covered in Iron Oxide
B
Has retrograde rotation
C
Is 10 AU from the Sun
D
Has 79+ moons
17) Mars
A
Has 79+ moons
B
Is 10 AU from the Sun
C
Has retrograde rotation
D
Is covered in Iron Oxide
18) Jupiter
A
Is 10 AU from the Sun
B
Has 79+ moons
C
Has retrograde rotation
D
Is covered in Iron Oxide
19) What is one astronomical unit?
A
150,000,000 km
B
2.3 light years
C
93,000,000 miles
D
More than one of these is a correct answer
20) Which is false about Pluto?
A
Pluto is about 1/5th the diameter of Earth.
B
Pluto crosses Neptune’s orbit for 20 years out of 248.
C
Pluto is made of mostly ice and methane gas.
D
Pluto has a double rotation with Charon, its moon.
*select an answer for all questions
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