The sun
Earth
Mars
Venus
Solar system
100
photoshphere
What is a ball of light?
100
Vast liquid,water oceans,and moderate temp.
What makes Earth livable?
100
4 small dense rocky planets
What is a terrestrial planet?
100
The counterclockwise spin of a planet
What is prograde rotation?
100
changed our view on the solar system
What is Kepler's laws?
200
the layer of the sun that energy is transferred away from the core by radiation.
What is the radioactive zone?
200
1.0 AU
What is the distance from the sun?
200
1.88 y
What is the period of revolution?
200
465 Degrees C
What is the Temp. on Venus?
200
The weakest force
What is Gravity?
300
The layer of the sun that energy escapes into space
What is the photosphere?
300
23 H 56 Min
What is the period of rotation ?
300
-140 degrees
What is the temp of Mars?
300
Carbon Dioxide gas
What is the atmosphere made up of?
300
Solar Nebula
How did the Solar system form?
400
A darker area on the sun
What is a Sunspot?
400
365.3 days
What is the Period of rotation?
400
6,792 km
What is the diameter?
400
0.72 AU
What is the distance Venus is from the sun?
400
protoplanetary disk
What did planetesimals form in?
500
A process by witch 2 or more low-mass atomic nuclei fuse to for another heavier nucleus.
What is Nuclear Fusion?
500
5.52 g/cm3
What is the density?
500
What is a polar ice cap?
500
177.4 degrees
what is the tilt of the Axis?
500
The third planet from the sun
What is Earth?