Unit Test : Day And Night

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Unit Test : Day And Night - Quiz

This is a 2nd grade unit test on the causes of day and night as well as facts about the Sun, constellations and phases of the moon.


Questions and Answers
  • 1. 

    Which does not move?

    • A.

      The Earth

    • B.

      The moon

    • C.

      The Sun

    Correct Answer
    C. The Sun
    Explanation
    The Sun does not move. While the Earth rotates on its axis and revolves around the Sun, and the Moon revolves around the Earth, the Sun remains relatively stationary in comparison. It is the center of our solar system and provides the gravitational force that keeps the planets in their orbits. Its immense size and mass make it appear motionless from our perspective on Earth.

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  • 2. 

    Picture a sunset.  What is happening on the other side of the world?

    • A.

      The Sun and moon are seen together.

    • B.

      The Sun is rising.

    • C.

      The moon comes out.

    Correct Answer
    B. The Sun is rising.
    Explanation
    The correct answer is "The Sun is rising." This answer suggests that while one side of the world is experiencing a sunset, the other side is experiencing a sunrise. This is because the Earth rotates on its axis, causing different parts of the world to be in daylight or darkness at any given time. Therefore, when it is sunset in one location, it is sunrise in the exact opposite location on the other side of the world.

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  • 3. 

    What happens every 24 hours?

    • A.

      The moon goes around the Sun once.

    • B.

      A week passes

    • C.

      Earth makes one complete rotation on its axis.

    Correct Answer
    C. Earth makes one complete rotation on its axis.
    Explanation
    The rotation of the Earth on its axis is what causes day and night. It takes approximately 24 hours for the Earth to complete one full rotation, resulting in the cycle of day and night that we experience. This rotation is responsible for the movement of the Sun across the sky and the change in position of celestial objects throughout the day.

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  • 4. 

    Where does the moon get its light from?

    • A.

      It comes from a volcano inside the moon.

    • B.

      It comes from the gases in the moon.

    • C.

      It comes from the Sun shining on it.

    Correct Answer
    C. It comes from the Sun shining on it.
    Explanation
    The moon gets its light from the Sun shining on it. The moon does not have its own light source, so it reflects the sunlight that falls on its surface. This is why we see different phases of the moon depending on its position relative to the Sun and Earth.

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  • 5. 

    What is the moon?

    • A.

      The moon is a constellation.

    • B.

      The moon is a large star.

    • C.

      The moon is a satellite.

    Correct Answer
    C. The moon is a satellite.
    Explanation
    The moon is a satellite because it is a celestial body that orbits around a planet, in this case, Earth. It does not emit light like a star, nor is it a constellation, which is a group of stars that form a pattern. The moon's gravitational pull affects Earth's tides and it also plays a significant role in the Earth's climate and ecosystems.

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  • 6. 

    What is the Sun?

    • A.

      The Sun is a planet.

    • B.

      The Sun is a star.

    • C.

      The sun is a constellation.

    Correct Answer
    B. The Sun is a star.
    Explanation
    The Sun is a star because it is a massive, glowing ball of gas that generates its own light and heat through nuclear fusion. It is at the center of our solar system and provides the energy necessary for life on Earth. Unlike a planet, which orbits a star, the Sun does not orbit anything and is the largest object in our solar system. It is not a constellation, which is a group of stars that form a recognizable pattern.

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  • 7. 

    Day and night happen because?

    • A.

      The Earth is spinning.

    • B.

      The Sun and the moon hide behind the clouds.

    • C.

      Someone turns off the lights.

    Correct Answer
    A. The Earth is spinning.
    Explanation
    Day and night happen because the Earth is spinning. As the Earth rotates on its axis, different parts of the planet are either facing towards or away from the Sun, causing the alternation between day and night. This rotation takes approximately 24 hours to complete, resulting in a day and night cycle. The Sun and the moon hiding behind the clouds or someone turning off the lights do not contribute to the occurrence of day and night.

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  • Apr 16, 2024
    Quiz Edited by
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  • Feb 04, 2009
    Quiz Created by
    Jamesnpatty1999
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