Astronomy Internal Structure

What are the terrestrial planets mainly composed of?
Rock and metal
Hydrogen and Helium
Heavy gases
Atmospheres
What are the Jovian planets mainly composed of?
Hydrogen and Helium
Rock and metal
Rings
Ice
What is needed for a planet to have a magnetic field?
Molten iron core
Moving conducting material
Thick atmosphere
Outgassing system
What becomes more prevalent the farther away from the Sun you go and towards the far Jovian planets?
Rock and metal
Hydrogen and Helium
Asteroids
Ice and ammonia
What is the cause for the large difference in composition between terrestrial and Jovian planets?
Gravity
Collisions
Tidal heating
Snow line
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