Water on EarthWhere is the Water Found on Earth?

GroundwaterGroundwater is freshwater under Earth’s

surface. Rain soaks into and through the soil and collects above solid rock.

EstuaryEstuary is places where fresh water from

rivers meets the ocean.

ESTUARYEstuary is places where fresh water from rivers meet the ocean.

Two –thirds of our bodies are water.

A person should drink eight glasses of water or about two quarts of water each day.

Most of the earth’s water is found in glaciers and icecaps near the poles.

glacier

icecaps

Two types of water on Earth:Fresh water and salt water.

Fresh waterSalt water

Ways to use fresh water:DrinkingBathingCookingGrowing plants for food.

Some places where fresh water is found.StreamsRiversLakesPondsIce glaciersIce capsUnderground

Fresh water is formed in rain or snow.

Most of the Earth’s water is salt water. It cover two-thirds or our planet’s surface.

The Pacific Ocean is Earth’s largest ocean. It is so big that all of Earth’s land could fit inside it.

Where does most of the salt water on Earth come from? Weathered rocks

Ocean water is too salty to drink. The salt in ocean water is greater than the concentration of salt in human body tissues. Drinking ocean water leads to unhealthful dehydration and more thirst.

Dehydration is a dangerous lack of water in the body.

The Water CycleLesson 2

EvaporationEvaporation is the changing of a liquid into a

gas.

CondensationCondensation is the changing of a gas into a liquid.

PrecipitationPrecipitation is water that falls to Earth as

rain, snow, sleet, or hail.

Adding heat or taking away heat changes the form of water.

Thermal Energy-heat

Water can be found in various formsGas as in water vapor.Liquid as waterSolid as ice.

Water vapor in air can also freeze as it condenses, to form frost. Air must be cold for frost to form.

FROST IS SEEN IN THE

MORNING BECAUSE AIR TEMPERATUR

E DROPS OVERNIGHT.

Water Treatment PlantWater treatment plants treat water or filters

water from rivers or lakes. They also filter some water that has been used. Water treatment plants clean the water before human consumption.

Filter means to clean dirt, chemicals, and bacteria from the water.