astronomy 1

Planets orbit the Sun in a shape called a(n)

• circle
• ellipse
• focus
• perihelion

An ellipse is drawn around two points called

• aphelion
• perihelion
• foci
• axis

The place where a planet is closest to the Sun as it orbits the Sun is called the

• perihelion
• aphelion

Where is the planet moving faster

• Position A to B
• Position B to C
• Position H to I
• Position I to J

The belt between Mars and Jupiter

• Comets
• Asteroids
• Meteors
• Stars

They are sometimes called shooting stars

• interplanetary dust
• asteroids
• comets
• meteors

Before the Big Bang, where was all the matter and energy contained?

• Inside the sun
• In a single point
• It was invisible
• Under a rock

The Big Bang Theory explains the formation of the - 

• Earth
• Sun
• Universe
• Solar System

What does the Big Bang theory suggest?

• The universe was just there
• The Milky Way is the only solar system
• The universe is continually expanding
• The universe is collapsing in toward a single point

What is most likely to be found in a nebula?

• salt crystals
• planets
• gas clouds
• ateroids