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18 Cards in this Set
- Front
- Back
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Mercury is the closest planet to what?
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the sun
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In what ways are comets similiar to asteroids?
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Both orbit the sun.
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Which body orbits a planet?
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a moon
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What causes a solar flare?
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an eruption on the sun's surface
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Scientists think the number of sunspots are affected by ________________.
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the temperature on Earth
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Which planet in the solar system has the most rings surrounding it?
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Saturn
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The part of the planet that points away from the sun is called the __________________.
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tail
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How do scientists think planets were formed?
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The planets formed from a cloud of gas and dust.
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The sun's core produces large amounts of heat and ______________.
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light
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In which way does a telescope change how objects look?
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It makes distant objects look nearer.
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One rotation of a planet is equal to ______________.
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a day
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Most of the sun's mass is made up of __________________ gas.
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hydrogen
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Which two gases make up most of Earth's atmosphere?
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oxygen and nitrogen
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A meteorite is a meteroid that has _________________.
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landed on Earth
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What type of information is most likely to be collected by a space probe?
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surface temperatures and atmospheres of planets
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One revolution of Earth takes _____________.
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1 year
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Which feature can be seen only during an eclipse of the sun?
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the sun's corona
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The surface of Venus is ____________________.
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hotter than Earth's
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