How the Solar System Formed?

Our solar system formed from a ____________ shaped cloud of dust held together by _____________ .

• disk , magnetism

• disk , gravity

• cylinder , gravity

• cylinder , magnetism

Which of the following statements about Earth, the Milky Way galaxy, and the solar system are true? (3 answers)

• Earth is part of the solar system.

• The Milky Way galaxy is within the solar system.

• The solar system is within the Milky Way galaxy.

• The Milky Way galaxy is just one of many galaxies in the universe.

• The solar system orbits about Earth.

What two factors affect the force of gravity exerted between two objects? (Choose Two)

• The distance between the objects

• The color of the objects

• The orbital paths of the objects

• The mass of the objects

As the distance between objects increases, the force of gravity between them -----------------.

• increase

• decrease

• same

A celestial cloud of dust and gas is called . . .

• nebula
• supernova
• accretion disc
• bombardment

What celestial body eventually evolved into our modern solar system?

• a nebula
• a supernova
• a quasar
• a galaxy

Smaller particles collecting together into larger and larger objects is called . . .

• accretion
• contraction
• explosion
• rotation

A nebula starts to collapse because of:

• A nearby star shining it's light
• A passing spaceship
• A passing comet
• Gravity

Why does the Earth orbit the sun? 

• The sun pulls Earth toward it.
• The sun pulls Earth in an orbit.
• The sun pushes Earth away.
• Electromagnatism from the sun keeps Earth in orbit.

As mass increases, gravity ________________.

• Increases 
• Decreases 
• Stays the same