Earth

1
Earth Bodies of Water

• Vocabulary

2
Tributary

• A smaller river that feeds into a larger river.

3
River System

• A network of a river and its tributaries.
• A river is a body of water formed by smaller
  streams coming together.
• Many of the worlds first settlers settled along
  rivers.

4
Drainage Basin

• The land drained by a river system.

5
Rift

• A long, deep valley with mountains or plateaus on
  either side.

6
Reservoir

• A human-made lake (can form behind a human made
  dam).

7
Trench

• A deep ocean valley.

8
Current

• A giant stream of ocean water.

9
Tidal Wave

• A giant ocean wave.

10
Tide

• The regular, rhythmic rise and fall of ocean
  waters.

11
Water Cycle

• The circulation of water from Earths surface to
  the atmosphere and back.
• The water cycle is important because it
  constantly replaces the supply of fresh water.