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26 Cards in this Set

  • Front
  • Back
What is a Meteoroid?
A chunk of rock in space
What is a Meteor?
Rocks in the atmosphere (shooting stars)
What is a Meterorite?
Rocks that hit planets
What is a Comet?
A mass rock and dust mixed with frozen water, methane, and other gases “dirty snowballs”
What are the 3 parts of a Comet?
Nucleus- Solid Center (Frozen)

Coma- Gas cloud surrounding the comet (glowing)

Tail- Trail of Gasses (behind the comet)
What are Meteor Showers caused by?
What are the 5 steps that formed the Solar System?
1. Ball of gas
2. 2 gravity starts contracting
3. under pressure starts to burn
4. burn pushes other material away
5. extra material pulls away
What keeps planets in orbit around the sun?
Inertia and Gravity
What is the difference between an inner planet and outer planets?
Inner- small, rocky, and have few moons (max 2)

Outer-large, gas, many moons and rings
Why does the comets "tail" point behind the comet?
Solar Wind
Atmosphere keep _____ in
Which planet was first discovered by a telescope and what is unique about that planet?
Uranus- rotates on its side
Which planet was first discovered by a mathematical equation?
There are big spots on 2 planets, which planets and what are the spots?
Jupiter and Saturn- Hurricanes
Where is Pluto located?
Kiper Belt
Why is the sky black on Mercury?
Theres no atmosphere to scatter the light
What is the distance between the Earth and the Sun?
150 billion KM
List the planets from largest diameter to smallest diameter.
Jupiter, Saturn, Uranus, Earth, Venus, Mercury, Pluto
What are the 4 rocky planets?
Mercury, Venus, Earth, and Mars.
What are the four gas giants?
Saturn, Uranus, Neptune, and Pluto.
Which planets have rings?
Jupiter, Saturn, Uranus, and Neptune.
Which planets have 0 moons?
Mercury and Venus
Which planet/s have 1 moon?
Earth and Pluto
Which planet has 2 moons?
Which planet has more then 2 moons?
Saturn, Uranus, Neptune, and Jupiter
What is unique about the rotation of Venus?
Its the opposite of every other planet