Universe

Which planets is one of the inner planets?

• Jupiter

• Saturn

• Mercury

• Neptune

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

On which planet can you find water as a solid, liquid and a gas?

• Earth

• Mars

• Venus

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 is the force that pulls matter together in stars?

• Convection

• gravity

• Spirals

What is the basis from which the solar system formed?

• Elliptical irregularity

• A giant cloud of dust and gas

• orbital rotation

• the greenhouse effect

Solar energy trapped by gasses in Venus's atmosphere cause what?

• the greenhouse effect

• Conduction

• Inertia

What are the the 3 types of galaxies?

• Orbital, heliocentric, geocentric

• Irregular, Spiral, Elliptical