Hydrosphere

form when water collects in hollows and low-lying areas of land.

• Rivers and lakes

• Ponds and lakes

• Oceans and seas

ponds and lakes contain mostly ............... water.

• still

• running

Some lakes, such as the Great Lakes, formed in depressions created by ice sheets

• false

• true

-Other lakes were created by movements of Earth's crust that formed long, deep valleys called ................ valleys.

• deep

• high

• rift

Lakes can also form in the empty craters of .......................

• Volcanoes

• Earthquakes

• Mountains

Eventually, the water reaches a level where the openings in the layers are filled with water, or saturated. The upper level of the saturated zone called the

• watershed

• water vapor

• water table.

A large portion of fresh water in the hydrosphere is

• lake

• underground

• river

• pond

People can get groundwater from an aquifer by digging a

-is a hole sunk into the earth to reach a supply of water.

• well

• tank

People dug wells by hand and used ............................ to bring up the water.