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24 Cards in this Set
- Front
- Back
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How do you know that a space object can be considered a planet?
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1. must have enough gravity to keep it a spherical shape
2. must orbit the Sun rather than another planet |
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What determines the seasons on the Earth
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the tilt of earth as it revolves around the Sun
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1st man to walk on the moon
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Neil Armstrong
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What is a probe
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a research spacecraft sent outside Earth's orbit
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What are satellites
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objects that orbit other space bodies
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the only planet where man can survive
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Earth
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what fact is untrue about Pluto
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has the most violent weather
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largest planet is
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Jupiter
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only outer planet not made up of gases
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Pluto
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planet known for Great Red Spot
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Jupiter
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planet closets to sun
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Mercury
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aurora
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energy emitted in the form of beautiful colors
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chromosphere
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the Sun's atmosphere
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corona
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the outermost part of the Sun
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photosphere
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the surface of the Sun
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sunspots
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dark spots on the photosphere of the Sun
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Name the planets in order, from closest one to the Sun out
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Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto
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Equinox refers to
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equal length of day and night
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brightest object in the morning and evening
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Venus
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Earth's natural satellite
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Moon
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What helps keep the planets in line around the Sun
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the Sun's huge mass exerting a gravitational pull
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the orbit of a planet around the Sun is called a
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revolution
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terrestrial planets are
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Mercury, Venus, Earth, Mars
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Mercury
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2nd smallest planet
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