salt and fresh water

WHAT CAN YOU SEE IN THE IMAGE? WHAT DOES IT REPRESENT?

HYDROSPHERE:

SALT AND FRESH WATER

6TH GRADE TEACHERS

CONTENT:

1. Introduction.2. Hydrosphere. 3. Salt Water. 4. Fresh Water.

5. Distribution of water on Earth. (Diagram)6. Video: Salt and Fresh water on Earth. 7. Distribution of water on Land.

introduction:

You have probably accidentally tasted seawater. What did it taste like? The taste of seawater is VERY different from river water or tap water in your house. This indicates that water on earth is not always the same and that many different types of water exist. Water on our planet is classified into two large groups:

• Salt Water.
• Fresh Water.

HYDROSPHERE:

A hydrosphere is the total amount of water on a planet. The hydrosphere includes water that is on the surface of the planet, underground, and in the air. A planet's hydrosphere can be liquid, vapor, or ice.

SALT WATER

They are much more abundant than fresh water. They represent the 97% of water on earth and we can find them in Oceans and Seas.

FRESH WATER

They are less abundant than salt water. They only represent the 3% of water on earth and we can find them in rivers, lakes, lagoons, polar ice caps, glaciers and groundwater.

DISTRIBUTION OF WATER ON EARTH.

As you can see, there is much less fresh water than salt water. This is why is so important not to waste or pullute our freshwater supply.

ViDEO

Fresh water is the opposite of salt water. It has much less salt and needs to be cleaned before it is safe to drink.

distribution of water on land:

step 01

Everything starts in the solid reserves of fresh water in the form of ice, like mountains, that store a great natural reserve of fresh water.

step 04

step 01

step 02

step 05

step 02

Then, the rivers. They begin as a small flow of water in hills and mountains and travel until they reach the oceans. Sometimes they accumulate and form lakes and lagoons.

step 03

step 03

step 05

step 04

After travelin through all places where water exist, they will reach the biggest reserve of all: The Oceans.

In the atmophere, we find water: in vapor or tiny drops that form clouds. And, it falls in the form of precipitation.

Going to the depths of our planet, we find groundwater. This water is absorbed from the surface of the land.

activity:

DO YOU REMEMBER THIS?

FRESH WATER

SALT WATER

BOTH

FILL THE VENN DIAGRAM WITH INFORMATION FROM THE IMAGE.

FRESH WATER

SALT WATER

BOTH

• It is made up of H2O and a very small amount of salt.

• Made up of magnesium, potassium, chloride, sodium, sulfate, calcium.

• Both are made up of dissolved materials.

• It contains less then 1% of salt.

• It is denser, because it has sodium chloride dissolved in it.

• It covers only 1% of earth.

• Both can be found in all three stages of matter

• The rest 1.5% of it is trapped in glaciers and icebergs.

• It covers about 71% of earth.