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Solar System
Inner Planets
Outer Planets
Moons
Small Bodies
100
a unit of measure based on the average distance between Earth and the Sun
What is the astronomical unit?
100
a planet or moon that has counter clockwise spin has this
What is prograde rotation?
100
This planet is well known for its bright ring system
What is Saturn?
100
This moon has an atmosphere very similar to Earth
What is Io?
100
"dirty snow balls" made of ice, rock, and dust
What are comets?
200
Made possible the discovery of additional planets
What is the telescope?
200
58 Earth Days long
What is the length of the day for Mercury?
200
This planet is tipped over onto its side
What is Uranus?
200
The moon COMPLETELY covers the sun
What happens during a TOTAL SOLAR ECLIPSE?
200
between Mars and Jupiter
What is the asteroid belt?
300
A common method for scientist to measure distances within the solar system
What is the speed of light?
300
the greenhouse effect of it's atmosphere
What causes a high surface temperature on Venus?
300
This planet has a huge storm called The Great Red Spot.
What is Jupiter?
300
the relative positions of the moon, the Earth, and the sun
What causes the phases of the moon?
300
small pieces of an asteroid that travels thru space
What are meteoroids?
400
a group of very large planets that are composed mainly of gases
What are the gas giants?
400
features like dry riverbeds
What evidence suggest that Mars once had a warmer climate?
400
This planet has a belt of visible clouds
What is Neptune?
400
Lunar rocks are similar to Earth's Mantle
What is evidence that supports the current theory of our moon's origin?
400
the size of the body
What is main difference between an asteroid and a meteoroid?
500
A group of planets whose surfaces are hard and rocky
What are the terrestrial planets?
500
Venus is of similar size and density
Why is Venus sometimes called Earth's twin?
500
Saturn is still forming
What does the extra energy that Saturn gives off suggest about the planet?
500
This moon has geysers that eject nitrogen
What is Triton?
500
a system used to rate the hazard level of an object moving toward Earth
What is the Torino Scale?