Planets
The 3rd planet from the Sun
Earth
Comet
The perfect distance from the sun, allowing planets to have liquid water and life:
The habitable zone
What force does the Sun have that keeps us orbiting around it:
Gravitational
What is another way to describe a "theory"?
A idea or explanation
The four planets closest to the sun all have what kind of surface?
Rocky
Rock that vaporizes (burns up) as it falls through Earths atmosphere
Meteor
Planets past Mars would be too ______ to support life:
Cold
a main sequence star
A explosion that caused the creation of the universe
The Big Bang Theory
What causes Earth to orbit the sun?
Gravity
A ball of plasma that produces its own light:
Star/Sun
Water
Why does the Sun look brighter to us, than any other star in the sky?
It is closer to us
Research has shown that the universe has constantly been e______.
Expanding
The four planets farthest from the sun, are mostly made of what?
Gas
Has a tail made of gas and dust
Comets and Meteors
The atmosphere helps regulate what?
Temperature
Where in the milky way galaxy is our sun located?
As the universe expand and galaxies move away from us, the light waves from these galaxies become more stretched. This is known as R________.
Redshift
The path the planets take around the sun:
Ellipse
A cloudlike formation of gas and dust
Nebula
Water, Atmosphere, Temperature, Sunlight
A star can become many different things once it is formed. What determines what a star will become?
It's mass
As objects move towards us, there light waves get closer together, causing them to shift towards B____.
Blue