Earth & Space Pre-test
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- 1.
Which of the following lists the earth, sun, and moon in order from smallest to largest?
- A.
Earth, sun, moon
- B.
Moon, sun, earth
- C.
Sun, earth, moon
- D.
Moon, earth, sun
Correct Answer
D. Moon, earth, sunExplanation
The correct answer is Moon, earth, sun. This is because the moon is the smallest celestial body among the three, followed by the earth, and then the sun, which is the largest.Rate this question:
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- 2.
What two things cause seasons on Earth?
- A.
Tilt of the axis and rotation
- B.
Tilt of the axis and orbit
- C.
Moon and sun placement
- D.
Rotation of earth on its axis and orbit around the sun
Correct Answer
B. Tilt of the axis and orbitExplanation
The tilt of the Earth's axis and its orbit around the sun are the two factors that cause seasons on Earth. The tilt of the axis causes different parts of the Earth to receive varying amounts of sunlight throughout the year, leading to the change in seasons. As the Earth orbits around the sun, the angle at which sunlight hits different parts of the Earth changes, further contributing to the seasonal variations.Rate this question:
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- 3.
Which of the following cause day and night on Earth?
- A.
Earth's orbit
- B.
The moon's orbit
- C.
Earth's rotation
- D.
The moon's rotation
Correct Answer
C. Earth's rotationExplanation
Earth's rotation is the correct answer because it is the spinning of the Earth on its axis that causes the cycle of day and night. As the Earth rotates, different parts of it are exposed to the Sun's light, creating daylight, while the other parts are in shadow, causing darkness or night. This rotation takes approximately 24 hours to complete, resulting in the familiar pattern of alternating day and night on Earth. The other options, such as Earth's orbit or the moon's orbit and rotation, do not directly cause day and night.Rate this question:
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- 4.
Which is true about the orbit of the sun, earth, and moon?
- A.
The sun orbits around the earth and the moon orbits around the sun
- B.
The earth orbits around the sun and the moon orbits around the earth
- C.
The moon and earth orbit the sun, but not one another
- D.
The sun and earth orbit the moon
Correct Answer
B. The earth orbits around the sun and the moon orbits around the earthExplanation
The correct answer is that the earth orbits around the sun and the moon orbits around the earth. This explanation is based on the widely accepted heliocentric model of the solar system, where the sun is at the center and the planets, including the earth, orbit around it. The moon, being a natural satellite of the earth, also orbits around the earth. This arrangement is supported by scientific evidence, such as observations of the motion of celestial bodies and the laws of gravity.Rate this question:
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- 5.
What causes the moon to appear to change shape?
- A.
The moon's orbit around the Earth causes it to look different
- B.
The moon's rotation around the sun changes
- C.
The Earth blocks some of the light
- D.
The Earth rotates to make it look differently
Correct Answer
A. The moon's orbit around the Earth causes it to look differentExplanation
The moon's orbit around the Earth causes it to look different because as the moon moves in its orbit, different portions of it are illuminated by the sun. As a result, we see different phases of the moon, such as a full moon, half moon, or crescent moon. The changing positions of the moon in relation to the Earth and the sun create the appearance of different shapes of the moon in the night sky.Rate this question:
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- 6.
A lunar eclipse is_________________.
- A.
When the moon is hidden from sight because of the Earth's shadow.
- B.
When the sun is hidden behind moon
- C.
When the Earth is hidden behind the moon
- D.
When the moon is close to the sun
Correct Answer
A. When the moon is hidden from sight because of the Earth's shadow.Explanation
A lunar eclipse occurs when the moon is hidden from sight because of the Earth's shadow. This happens when the Earth moves between the sun and the moon, blocking the sun's light from reaching the moon. As a result, the moon appears dark or reddish in color during a lunar eclipse.Rate this question:
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- 7.
___________ is when the side of the moon facing earth is completely lit up and _______________ is when it is completely dark.
- A.
New moon; full moon
- B.
1st moon; last moon
- C.
Full moon; new moon
- D.
Crescent moon; gibbous moon
Correct Answer
C. Full moon; new moonExplanation
A full moon occurs when the side of the moon facing earth is completely lit up, meaning that the entire surface of the moon is visible from earth. On the other hand, a new moon is when the side of the moon facing earth is completely dark, making it invisible from earth. During a new moon, the moon is positioned between the earth and the sun, causing the sun to illuminate the side of the moon facing away from earth.Rate this question:
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- 8.
Which of the following is true about gravity?
- A.
Gravity pulls things down.
- B.
Gravity holds things up.
- C.
Gravity pulls things to the center.
- D.
All of the above.
Correct Answer
C. Gravity pulls things to the center.Explanation
Gravity is a force that attracts objects towards each other. It is responsible for pulling things towards the center of the Earth, which is why objects fall down when dropped. Gravity does not hold things up, as it is a force of attraction rather than support. Therefore, the statement "Gravity pulls things to the center" is true, while the other statements are not.Rate this question:
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- 9.
The sun's gravity does which of the following?
- A.
Holds the planets in orbit
- B.
Holds the moons in orbit
- C.
Both A & B
- D.
Neither A or B
Correct Answer
C. Both A & BExplanation
The sun's gravity is responsible for holding both the planets and the moons in orbit. The gravitational pull of the sun keeps the planets in their respective orbits around it, while also exerting a gravitational force on the moons, keeping them in orbit around their respective planets. Therefore, the correct answer is Both A & B.Rate this question:
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- 10.
What holds the moon in orbit around the Earth?
- A.
The sun's gravity
- B.
The moon's gravity
- C.
The Earth's gravity
- D.
The universal gravity
Correct Answer
C. The Earth's gravityExplanation
The Earth's gravity holds the moon in orbit around the Earth. Gravity is the force of attraction between two objects with mass, and in this case, the Earth's mass creates a gravitational force that pulls the moon towards it. This gravitational force keeps the moon in a stable orbit around the Earth, preventing it from drifting off into space.Rate this question:
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- 11.
Which of the following could happen if the sun had no gravitational pull?
- A.
The planets would continue orbiting with no changes
- B.
The planets would no longer orbit the sun and would begin moving throughout the solar system
- C.
The planets would continue orbiting but at a faster rate
- D.
There is no way to predict what might happen
Correct Answer
B. The planets would no longer orbit the sun and would begin moving throughout the solar systemExplanation
If the sun had no gravitational pull, the planets would no longer be bound to the sun's gravitational force and would start moving freely throughout the solar system. Without the sun's gravitational pull, there would be no force to keep the planets in their orbits around the sun, causing them to drift away and move independently.Rate this question:
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- 12.
Where does the moon get it's light?
- A.
It creates its own light
- B.
It receives light reflected off of the Earth
- C.
It reflects lights from the sun
- D.
None of the above
Correct Answer
C. It reflects lights from the sunExplanation
The moon gets its light by reflecting light from the sun. Unlike the sun, the moon does not produce its own light. Instead, it acts as a mirror, reflecting sunlight back to Earth. This is why we see different phases of the moon depending on its position in relation to the sun and Earth. The moon's surface reflects different amounts of sunlight, creating the different phases such as full moon, half moon, and crescent moon.Rate this question:
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