Surface Water

What items flow together to make a river system? 

• streams and rivers
• ponds
• lakes
• oceans

The streams and small rivers that feed into a main river are

• resevoirs
• lakes
• tributaries
• watersheds

One watershed is separated from another by a ridge of land called a 

• tributary
• watershed
• divide
• resevoir

The land area that supplies water to a river system

• divide
• watershed
• tributary
• lake

Ponds and lakes form when water collects in __________ and low-lying areas of lands

• glaciers
• hollows
• prairie
• forests

A lake that stores water for human use. 

• pond
• stream
• reservoir
• sea

Natural processes and _________ activities can cause lakes to disappear.

• robot
• human
• cloud
• space

When nutrients build up in a lake.

• eutrophication
• reservoir
• watershed
• divide