Formation of Galaxies
What two things appear to have formed the Universe?
Dust and Gas
What causes the planets to orbit the sun?
The suns gravity
What is the first object to form in a Galaxy or Solar System?
Sun
What is the first shape made from dust and gas?
Sphere
Elliptical
Disc
Cone
Disc
What type of motion does speed and gravity create?
Orbital motions
Why don't Mercury and Venus have moons?
The Suns gravity is too strong
What formed first, Rocky Planets or Gas Giants?
Rocky Planets
What would happen to Jupiter's moons if its gravity turned off?
The moons would fly off into space
What is the difference between a planet and a moon?
Planets orbit Stars, Moons orbit Planets
What is the last object to form in a Solar system to orbit the Sun?
Asteroids
What combined with gravity creates the Sun?
Dust and gas
What shape do moons and planets make as they orbit?
Elliptical/oval
Are galaxies in groups (clusters) or spread out?
Clusters
Why do Jupiter and Saturn have the most amount of moons? (list two)
The have the most mass, meaning more gravity.