The universe

How many stars are in our solar system?

• billions

• hundreds

• two

• one

What force causes the planets to orbit the sun?

• orbit

• gravity

• orbital velocity

Where is the asteroid belt located?

• Between Earth and Mars

• Between Mars and Jupiter

• Between Mercury and Venus

What are small pieces of old broken down rocks from comets called?

• Meteroids

• Asteroids

• Comets

What are the the 3 types of galaxies?

• Orbital, heliocentric, geocentric

• Irregular, Spiral, Elliptical

What is a light year?

• The distance light travels in a year

• The distance light travels in a second

What are meteors?

• Small pieces of rock that have entered earth's atmosphere

• small pieces of rock that hit Earth's surface

• Small pieces of rock in outer space

Why does a comet develop a tail?

• because of the Oort Cloud

• because of Jupiter's gravitational pull

• because of solar wind

_______________________ are pieces of rock that strike a planet or moon.

• Meteors

• Meteroids

• Meteorites

A __________________________ is a huge collection of stars, gases, and dust that is classified by shape.

• galaxy
• Big Bang Theory
• light-year