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23 Cards in this Set
- Front
- Back
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Surface of the sun...
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photosphere
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Sun's atmosphere...
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chromosphere
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Above the chromosphere, seen only during eclipse...
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corona
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Dark spots on sun's surface...
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sunspots
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Solar storms exploding from surface...
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solar flare
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Huge streams of gas that extend out to the corona...
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solar prominence
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Electrically charged particles from the Sun...
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solar wind
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Light show cause by solar wind colliding with atmosphere...
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aurora
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Earth's orbit around the Sun...
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revolution
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An imaginary line through the earth around which it rotates...
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axis
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One spin around the axis marking a day...
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rotation
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2 days in the year when the days and nights are equal lengths...
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equinox
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This causes the seasons...
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Earth's tilt
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Name the planets in order beginning with the one closest to the sun.
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Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto
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Mercury has a _________ gravitational field.
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strong
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What planet is the brightest object in the morning and evening skies?
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Venus
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The inner planets are called __________ planets.
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terrestrial
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Which planet has a great red spot and is the largest?
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Jupiter
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Which outer planet is not made of gas?
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Pluto
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What is needed to call an object a planet?
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enough gravity to keep a spherical shape and an orbit around the sun
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Objects that orbit other space bodies are called...
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satellites.
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A research spacecraft
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probe
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First man on the moon
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Neil Armstrong
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