Science Unit 4 Lesson 1&2

the force of attraction between any two objects due to their mass

• moon phases

• tides

• gravity

• earth

the regular rise and fall of water level along a shoreline

• tides

• mars

• ocean

• comets

a meteor that strikes earth's surface

• gravity

• orbit

• meteorite

• meteor

a chunk of rock from space that travels through Earth's atmosphere

• meteorite

• orbit

• comet

• meteor

one complete trip around an object in a circular or nearly circular path

• gravity

• revolution

• earth

• venus

a complete spin on an axis

• orbit

• revotution

• moves

• rotation

the path an object takes as it travels around another object

• orbit

• rotation

• revolution

• tides

the apparent shapes of the moon in the sky

• orbit

• tides

• moon phases

• the moon