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33 Cards in this Set
- Front
- Back
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What determines how much of the Moon you see on a clear night?
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Where the Moon is in its orbit
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When the northern and southern hemispheres receive the same amount and direction of sunlight, what season could it be?
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spring or fall
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About how many days are there between full moons?
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30
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For the moon to have a safe temperature for living things, what is the most important thing that would be needed?
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atmosphere
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What is the sun?
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an averaged sized yellow star.
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Revolution of the Earth takes
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one year.
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A _______ moon occurs when the moon is between the Earth and the sun.
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new
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As the Earth tilts toward the sun, the northern hemisphere is getting the most direct sunlight during which season?
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summer
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While the northern hemisphere has summer, the southern hemisphere has _____.
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winter
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How big is the sun?
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110 times larger than the Earth.
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_______ was the first person to suggest that the Earth revolves around the sun.
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Copernicus
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One complete orbit is called
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a revolution
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The surface of the moon is dented with
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craters
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What happens when the Earth passes through the moon's shadow?
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solar eclipse
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The moon is about _______ the diameter of the Earth.
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1/4
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About how far is the Earth from the sun?
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93 million miles (93,000,000 miles)
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An imaginary line through a spinning object is
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an axis
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The Earth is one of _______ planets.
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Nine
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The Earth is the _______ planet from the sun.
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third
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The time it takes for Earth to rotate on its axis is
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one Earth day
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The Earth's surface is active because _________ change the surface.
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wind
water volcanoes earthquakes |
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The Earth's shadow causes the moon to get darker during a
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lunar eclipse
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Unlike the other four inner planets, Earth has large amounts of life-supporting _______ and _____.
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oxygen, water
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The Earth's _______blocks most of the sun's harmful rays.
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atmosphere
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One full spin of an object on its axis is called one
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rotation
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An object that revolves around another object is called a
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satellite
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The sun, the planets and their moons, and other objects that orbit the sun make up the
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solar system
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If you think like Aristotle and Ptolemy you believe
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the Earth is the center of the solar system.
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Who used one of the first telescopes to take observations of the solar system?
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Galileo
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What NASA missions helped us learn more about the moon?
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Apollo
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What planet is closest to the sun?
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Mercury
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Which planet is not an inner planet?
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Neptune
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Of the following planets, which planet is closest to the sun: Uranus, Saturn, Jupiter, or Venus
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Venus
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