End of the Year Review Solar System Unit

When the Northern Hemisphere of Earth is tilted towards the sun, it is experiencing _______________________.

• Spring

• Summer

• Fall

• Winter

When the Northern Hemisphere is tilted away from the sun, it is experiencing ______________________.

• Spring

• Summer

• Fall

• Winter

_________________ believed that the Earth was at the center of the universe (geocentric) and everything revolved around the Earth.

• Aristotle

• Copernicus

• Kepler

• Galileo

__________________ discovered that the planets revolved around the sun (heliocentric)..

• Ptolemy

• Aristotle

• Kepler

• Copernicus

The moon orbits the earth because of the ___________________ attraction between the moon and the earth.

• gravitational

• elliptical

• geocentric

• gibbous

__________________ tides occur when the sun, moon, and earth form a straight line and experience extremely high tides.

• High

• Low

• Spring

• Neap

__________________ tides occur when the sun, earth, and moon form a 90^o angle and experience extremely low tides.

• High

• Low

• Spring

• Neap

What causes tides?

• gravitational pull of the moon

• gravitational pull of the earth

• the rotation of the earth

• the revolution of the moon on its axis

______________________is the main factor that causes the planets to revolve around the sun.

• The force of gravity

• The force of rotation

• The force of air pressure

• The force of an asteroid

The asteroid belt separates the first __________ planets (terrestrial planets) from the other planets (gas giants).

• four

• three

• five

• six