A student made a model of how the Earth, Moon, and Sun orbit. She used ping-pong balls
to represent each one. She painted each one a different color. Then, she placed the Moon
and Earth close together and the Sun much further away.What is one limitation of the student's model?

• She used the same size balls.
• She made earth orbit the sun.
• She moved the Sun away from the Earth and Moon.

Which planet in our solar system is closest to the Sun?

• Earth
• Jupiter
• Mercury
• Saturn

Which of the following is an accurate model of how the Sun, Earth, and Moon move?

• Sun and moon orbit Earth
• Earth and moon orbit Sun
• Earth orbit's the Sun and the moon orbits Earth
• Earth and sun orbit moon

What planet is eighth in the Solar System?

• Uranus
• Jupiter
• Neptune
• Mars

The moon is a natural  ______ of Earth.

• comet
• axis
• satellite
• space probe

Earth and the other planets closest to the Sun are made mostly of _______

• gas
• metal
• water
• rock

The __________ has planets, moons, comets, and asteroids.

• solar system
• earth
• rotation
• United States

One of the main differences between the outer and inner planets is __________.

• The inner planets all have water
• the inner planets are much bigger than the outer planets
• the outer planets are gas planets
• the outer planets have rings, and the inner planets don't

Where is the asteroid belt found?

• between earth and mars
• Between Uranus and Neptune
• Between Mercury and Venus
• Between Mars and Jupiter

Why does Earth have different seasons? 

• because of the distance between Earth and the sun 
• because of the speed of Earth as it rotates on its axis 
• because of the amount of light blocked by the moon on its axis 
• because of the tilt of Earth on its axis as it moves around the sun