1.
What causes the different seasons on Earth?
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A. The fact that Earth goes along an ecliptic
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B. The fact that Earth rotates around its axis
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C. The way that Earth gets closer and farther from the sun throughout the year
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D. The way heat energy reflects off of Earth because of the angle at which it hits
Correct Answer
D. D
Explanation
The correct answer is D. The way heat energy reflects off of Earth because of the angle at which it hits. This is because the angle at which the sun's rays hit the Earth's surface changes throughout the year, causing different amounts of heat energy to be absorbed or reflected. This variation in heat energy leads to the different seasons on Earth. The other options (A, B, and C) are not correct explanations for the different seasons.
2.
The Northern Hemisphere experiences winter when Earth is farthest from the sun.
Correct Answer
B. False
Explanation
The explanation for the correct answer, which is False, is that the Northern Hemisphere actually experiences winter when Earth is closest to the sun. This is because the tilt of Earth's axis causes the Northern Hemisphere to be tilted away from the sun during winter, resulting in less direct sunlight and colder temperatures.
3.
Why is one side of the moon called "the dark side of the moon"?
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A. The moon is in Earth's shadow.
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B. The moon both rotates on its axis and revolves around Earth every 28 days.
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C. Earth is in the moon's shadow.
Correct Answer
B. B
Explanation
The correct answer is B. The moon both rotates on its axis and revolves around Earth every 28 days. This is because the same side of the moon always faces the Earth due to its synchronous rotation. As a result, the other side of the moon, which is not visible from Earth, is often referred to as the "dark side of the moon."
4.
How many low tides happen at a given coast in any 24-hour period?
Correct Answer
2
two
TWO
too
Explanation
There are typically two low tides that occur at a given coast in any 24-hour period. The gravitational forces exerted by the moon and sun cause the ocean's water levels to rise and fall, resulting in high and low tides. These tides occur approximately every 12 hours and 25 minutes, leading to two low tides and two high tides within a 24-hour period.
5.
Why is one side of the moon called "the dark side of the moon"?
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A. Half of the moon emits light, while the other half does not.
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B. The amount of time it takes to rotate around its axis is the same amount of time it takes to revolve around Earth.
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C. Only half of the moon is in Earth's shadow at any given time.
Correct Answer
B. B
Explanation
One side of the moon is called "the dark side of the moon" because it is the side that is not visible from Earth. This is due to the moon's synchronous rotation, where it takes the same amount of time to rotate around its axis as it does to revolve around the Earth. As a result, one side of the moon always faces away from Earth, making it appear dark or "hidden" to us.
6.
Why is there so little evidence of the Period of Heavy Bombardment on Earth?
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A. The moon's gravity prevented asteroids from reaching Earth.
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B. Weathering, plate movements and volcanoes destroyed many of the craters.
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C. Earth's magnetic field prevented asteroids from striking Earth.
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D. Asteroids burn up in Earth's thick atmosphere.
Correct Answer
B. B
Explanation
Weathering, plate movements, and volcanoes destroyed many of the craters from the Period of Heavy Bombardment on Earth.
7.
What causes the different seasons on Earth?
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A. Increasing levels of carbon dioxide in the atmosphere.
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B. The speed at which the Earth rotates on its axis
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C. The distance between Earth and the sun
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D. The angles at which the suns rays strike the Earth
Correct Answer
D. D
Explanation
The different seasons on Earth are caused by the angles at which the sun's rays strike the Earth. The Earth's axis is tilted relative to its orbit around the sun, which means that different parts of the Earth receive different amounts of sunlight throughout the year. When the sun's rays strike the Earth at a more direct angle, it is summer in that hemisphere. When the rays strike at a more indirect angle, it is winter. The changing angles of the sun's rays throughout the year cause the seasons to change.
8.
The cause of the phases of the moon is a cycle that is close to _______ long.
Correct Answer
28 DAYS
28
twenty eight
28 days
28days
Explanation
The phases of the moon occur in a cycle that is close to 28 days long. This is because the moon orbits around the Earth, and as it does so, different portions of its illuminated side become visible to us on Earth. As the moon moves in its orbit, the relative positions of the Earth, moon, and sun change, causing the different phases of the moon to occur. The entire cycle, from one new moon to the next, takes approximately 28 days to complete.
9.
The side of the moon that faces the sun is always illuminated, but that side does not always face Earth. The different phases of the moon are caused by the moon's near 28-day _____.
Correct Answer
lunar cycle
lunar
cycle
Explanation
The different phases of the moon are caused by the moon's near 28-day lunar cycle. This cycle refers to the moon's orbit around the Earth, which takes approximately 28 days to complete. As the moon orbits, different portions of its illuminated side become visible from Earth, resulting in the various phases of the moon that we observe. The term "lunar" refers to anything related to the moon, while "cycle" refers to a recurring pattern or sequence, in this case, the moon's orbit.
10.
Which contributes to the lack of evidence of the Period of Heavy Bombardment on Earth?
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A. choice text
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B. Plate movements
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C. The supply of oxygen
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D. Earth's vegetation
Correct Answer
B. B
Explanation
Plate movements contribute to the lack of evidence of the Period of Heavy Bombardment on Earth. This is because plate tectonics, which involve the movement and recycling of Earth's crust, can erase or alter the geological features that would provide evidence of past impacts. The constant shifting and recycling of Earth's crust through plate movements can bury impact craters, destroy them through erosion, or alter their appearance over time. Therefore, the evidence of the Period of Heavy Bombardment may have been erased or obscured by plate tectonics, making it difficult to find conclusive evidence of this period.
11.
Plants take in carbon dioxide and release _____ gas.
Correct Answer
oxygen
o
o2
Explanation
Plants undergo a process called photosynthesis, where they use sunlight, water, and carbon dioxide to produce glucose and oxygen. The oxygen produced during photosynthesis is then released into the atmosphere as a byproduct. Therefore, the correct answer is "oxygen" as plants release this gas. The options "o" and "o2" are incorrect as they do not accurately describe the gas released by plants.