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35 Cards in this Set
- Front
- Back
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This planet is closest to the sun. Has no protective atmosphere.
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Mercury
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The four rocky planets
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Mercury
Earth Venus Mars |
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This planet shows massive craters, has no atmosphere
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Mercury
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The second planet from the sun, has sulfuric acid atmosphere
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Venus
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The two spacecraft that have landed on this planet were crushed by the atmospheric pressure and melted by the heat.
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Venus
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This planet has an atmosphere of nitrogen and oxygen
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Earth
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What planet has a desolate desert, a mountain 75,000 ft high, and canyon extending several thousand miles?
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Mars
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This is the fourth planet from the sun.
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mars
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The fifth planet from the sun is 12x the size of earth
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Jupiter
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How many moons does Jupiter have?
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61
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Which planet has the Red Spot?
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Jupiter
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What is the sixth planet from the Sun?
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Saturn
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What makes Saturn oblate?
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1) Fast rotation
2) low density |
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This planet, seventh from the sun, is tilted on its side
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Uranus
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The eighth planet from the sun, but is sometimes the farthest from the sun.
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Neptune
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Surface of this planet is very cold, but core is hot, causing surface winds of 1000 mph
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Neptune
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What planet should have been called an asteroid?
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Pluto
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The point at which a planet is farthest from the Sun
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aphelion
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Point at which planet is closest to Sun
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perhelion
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When a planet is in line with Earth in relation to Sun
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opposition
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What is a conjunction?
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When two or more bodies appear in the sky within 1 degree of each other in the Zodiac
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What is an astronomical unit?
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average distance between the earth and sun: au
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What is the speed of light?
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186,170 miles/second
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What is a light year?
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The distance light can travel in a year
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What is the difference between a meteor and a meteorite?
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A meteor is small..burns up
A meteorite makes it to earth |
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What is red shift used for?
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To determine how far away something is
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What is a galaxy?
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Systems of stars and interstellar matter
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What are the four types of galaxies?
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Spiral
Lenticular Elliptical Irregular |
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What indicated that the Big Bang was not uniform?
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Microwave background
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What causes light to show different colors?
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Different elements
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What causes the birth of a star?
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enormous clouds of dust and gas collapse under the force of gravity
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What happens at the core of a star?
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Nuclear fusion
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What happens when a star has used up all of its core hydrogen fuel?
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It begins to fuse helium and other elements, and grows in size becoming a Red Giant
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What happens to a star when it runs out of fuel?
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It collapses into a white dwarf star
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What is cosmology?
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Study of the origin and future of our universe
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