Planets
Solar bodies
Big Bang Theory
VDM's
Misc
100
Third rock from the sun
Earth
100
What is a meteorite
Objects that enter Earth's atmosphere and land on the ground
100
A very dense hot point is called a...
Singularity
100
What is a planet

A celestial body moving in an elliptical orbit around a star.

100
What is another name for the 4 outer planets?
1. Jovian planets

2. Gas Giants

3. Gas Giants

200
What separates the inner from the outer planets
Asteroid belt
200
What is a solar body?
An object in the solar system that is neither a planet, nor a natural satellite
200
What is the Big Bang Theory?
The most widely excepted theory of how the universe began
200
What is revolution?

the orbiting of one heavenly body around another.

200
What is another name for the 4 inner planets?
Terrestrial Planets
300
What is the order from the sun out of the planets
Mercury, Venus, Earth, Mars, Jupitor, Saturn, Uranus, Neptune
300
What is a moon?
Any planetary satellite
300
Edwin Hubble discovered Redshift, how does that support the theory of the Big Bang?
Redshift shows that the universe is still expanding
300
What is rotation?

The movement or path of the earth or a heavenly body turning on its axis

300
Heliocentric means?
A sun centered universe
400
What 3 reasons make a planet a dwarf planet
1. Orbits the sun

2. nearly round in shape

3. Clears its orbit & surrounding area of debri

400
What is an asteroid?
A rocky, irregular shaped body that orbits the sun
400
What is a solar nebula?

A concentration of interstellar dust and gas. The cloud contracted under its own gravity and our proto-Sun formed in the hot dense center - the start of our solar system.

400
What is the definition of an atmosphere?

A layer of gases surrounding a planet, star or moon

400
Name 2 ways inner and outer planets are different
Inner                        Outer

few moons                 Many moons

Solid surface              gas

varied atm               Similar atm

great density            low density

Small                       large

Spin slow                 Spin fast

500
Name two differences between inner and outer planets
Inner: Rocky, small in size, varied atmosphere, 


Outer: gas, similar atmosphere, large

500
What is a comet?
A body of ice and dust in orbit around the sun that develops a tail from melting ice as it nears the sun.
500
What is cosmic radiation background?
leftover radiation from the initial explosion of matter - the big bang
500
Define Gravity?

The fundamental force of attraction that all objects with mass have for each other.

500
How many stars are in our solar system?
one - The Sun
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