Formation of the Solar System

What happened first in the formation of the planets?

• The Sun Forms

• The Planetesimals form

• The Planets form

• The Solar Nebula Collapses

Where in the protoplanetary disk did the rocky planets form?

• In the cold temperatures of the outer disk

• In the hot temperatures of the inner disk

• The formed in the outer disk but then moved in.

• They formed in the inner disk and then moved out

How did the sun form?

• It formed when the solar nebula collapsed

• It formed when gas and ice collided and exploded

• It formed when fusion began in the center of the protostellar disk

• There is no such thing as a sun.

What force caused planets to grow so large?

• Friction

• Air Resistance

• Fusion

• Gravity

When did the solar system form, according to the big bang theory?

• 13-15 billion years

• 4.6 Billion Years

• 4.6 Million Years

• 13-15 million years

The Sun derives its energy by ___ of ___

• Nuclear fusion, hydrogen

• Nuclear fusion, helium

• Nuclear fission, hydrogen

• Nuclear fission, helium

The group of inner planets are known as:

• The Terrestrial Planets
• The Gas Giants
• The Outer Planets
• The Hallow Planets

Characteristics of the inner planets include:

• Small, rocky, few or no moons, warm

• Large, rocky and cold

• Small, gaseous, no moons and cold

• Large, gaseous and have many moons

What materials could not survive the heat where the rocky planets were formed?

• Gamma Rays
• Plasma
• Ice and Gas
• Rocks

Our solar system consists of:

• The sun, stars, planets and other objects

• Just the planets

• Just the sun and stars

• The sun, the planets and other objects that orbit the sun