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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 books were not published until after their deaths.
B
Their claims contradicted the most popular ideas at that time.
C
They had no good research to support their claims.
D
Their claims could not be verified by the instruments of the time.
2) Which of the following is an example of technology?
A
the moon's orbit
B
space probe photographs of distant planets
C
chemical composition of Moon rocks
D
the Earth’s gravitational constant
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
Iron and Carbon
B
Neon and Helium
C
Hydrogen and Carbon
D
Hydrogen and Helium
5) Why does the Moon only have 1/6 of the Earth's gravity?
A
it is so far away from the earth
B
it is made of basalt
C
it has no atmosphere
D
it is not as massive as Earth
6) What causes the earth's seasons?
A
the tilt of the earth's axis
B
the sun is brighter in the summer
C
the distance to the sun
D
the elliptical orbit of the earth
7) Which two factors combine together to cause an object to remain in a stable orbit?
A
heat and electricity
B
mass and magnetism
C
gravity and inertia
D
fusion and fission
8) Why does the earth experience day and night?
A
the earth rotates on its axis
B
the earth is tilted on its axis
C
the moon revolves around the earth
D
the earth revolves around the sun
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 is too small to catch heat.
C
Mercury has no atmosphere.
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 laws governing the behavior of atoms and molecules is different here than elsewhere.
B
Liquid water and a protective atmosphere are found on Earth and not on the others.
C
Earth has active tectonic plates that continue to create and destroy mountains and basins.
D
The tilt of the axis is different from that of the Earth on other planets and moons.
11) Why is it theoretically possible to fly through the upper layers of Jupiter and Saturn?
A
they have no gravity
B
they are not solid
C
they are fusing inside
D
internal pressures are very low
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
Mars
B
Venus
C
Pluto
D
Jupiter
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
Earth has a hot interior core, and heats up our planet from the inside.
B
The red surface of Mars absorbs too much solar radiation and is too hot.
C
Mars is too cold because its atmosphere is too thin to hold in heat.
D
The Earth is tilted on its axes and gives us all four seasons.
14) Which of the following is the temperature of the Sun’s core?
A
15,000,000 degrees Centigrade
B
2,000,000 degrees Centigrade
C
2,000,000 degrees Fahrenheit
D
15,000,000 degrees Fahrenheit
15) Compared to the outer planets…
A
The Terrestrial planets have thinner atmospheres.
B
The Inner planets have greater mass and warmer temperatures.
C
The Inner planets have many more moons.
D
The Terrestrial planets are more likely to be composed of gas and ice.
16) Venus
A
Has 79+ moons
B
Is covered in Iron Oxide
C
Is 10 AU from the Sun
D
Has retrograde rotation
17) Mars
A
Is 10 AU from the Sun
B
Has retrograde rotation
C
Has 79+ moons
D
Is covered in Iron Oxide
18) Jupiter
A
Has retrograde rotation
B
Is 10 AU from the Sun
C
Is covered in Iron Oxide
D
Has 79+ moons
19) What is one astronomical unit?
A
More than one of these is a correct answer
B
150,000,000 km
C
2.3 light years
D
93,000,000 miles
20) Which is false about Pluto?
A
Pluto is about 1/5th the diameter of Earth.
B
Pluto has a double rotation with Charon, its moon.
C
Pluto is made of mostly ice and methane gas.
D
Pluto crosses Neptune’s orbit for 20 years out of 248.
*select an answer for all questions
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