Solar System in General
Inner Planets
Outer Planets
Other Objects
Grab Bag
100
Amount of time it takes a planet to orbit around the Sun
Revolution
100
Which planet has the largest volcano in the Solar System?
Mars
100
Which planet has three moons that orbit it?
Pluto
100
Name the 3 parts of a comet
coma, nucleus, tail
100
Which planet is closest in mass and size to Earth?
Venus
200
About how many moons are there in our solar system?
Over 150
200
How far is Earth from the Sun?
150 km or 1 AU
200
Which dwarf planet is slightly larger than Pluto with one moon?
Eris
200
How often does Halley’s comet orbit the Earth?
every 76 years
200
Which planet is titled on its side (axis tilt of 98 degrees)?
Uranus
300
The closer planets are to the Sun, the ________ their orbits are.
Faster
300
Mercury has extreme day and night temperatures due to its lack of ______________.
an atmosphere
300
Which planet’s axis is tilted on its side and contains methane to make it appear blue?
Uranus
300
What is the name of the large group of comets surrounding the solar system beyond Pluto?
Oort Cloud
300
Between which two planets are most asteroids located?
Mars and Jupiter
400
What is the name of the theory that states that the solar system formed as a cloud of gas, ice, and dust contracted in space?
Nebular Theory
400
Which planet has a thick atmosphere made of carbon dioxide, no moons, and is similar in size to Earth?
Venus
400
Which moon of Jupiter could have life under its ice-covered surface?
Europa
400
What do we call rocky objects from space that STRIKE the Earth?
Meteorites
400
What does the disappearance and reappearance of the Great Dark Spot on Neptune tell us about its atmosphere?
that it changes rapidly
500
All planetary orbits are _________ ellipses.
Circular
500
What element in the rocks on Mars cause it to appear rusty?
Iron Oxide
500
The hydrogen and helium atmosphere changes to an ocean of liquid hydrogen and helium toward the interior on which planet?
Jupiter
500
Asteroids are small clumps of matter that are also known as ________ ______ ________.
Near Earth Objects
500
Which two elements need to fuse together in order for the sun to produce heat and light?
Hydrogen & helium
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