THE SOLAR SYSTEM

What is the process that formed the Solar System?

• Expansion due to fusion energy
• Nuclear fusion
• Gravitational collapse
• Collapse of a nebula

What happens to a comet as it approaches the Sun?

• It becomes a moon
• It becomes a planet
• It vaporizes and produces a tail
• It explodes

How many moons does Saturn have?

• More than 50
• 1
• 8
• 50

How long does it take for Neptune to orbit the Sun?

• 88 Earth days
• 24 hours
• 165 Earth years
• 365 Earth days

What are comets made of?

• Metals and rocky material
• Rocky material, dust, and ice
• Gas and liquid water
• Dust and gas

What is the shape of a planet?

• Cylindrical
• Round or spherical
• Triangular
• Flat

Where is the asteroid belt located?

• Between Earth and Mars
• Between Saturn and Uranus
• Between Mars and Jupiter
• Between Neptune and Pluto

What is the role of a dwarf planet's gravity in its orbit?

• Produces a tail
• Makes it round or spherical
• Not strong enough to clear the neighborhood
• Vaporizes

How many planets are there in the Solar System?

• 6
• 4
• 10
• 8

What provides the force needed to maintain stable orbits?

• Kinetic energy
• Radiation pressure
• Gravity
• Collisions between particles