WATER PRESENTATION

UNIT 3. WATER

The 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.

BODIES OF WATER

The bodies of water are from oceans, seas, lakes, glaciers, ponds, waterfalls, rivers to streams.

Some of the bodies of water

OCEAN is a large body of salt water. We have five separate entities: the Pacific, Atlantic, Indian, Southern and Arctic Oceans. SEA is a large body of salt water smaller than the oceans. LAKES are large enclosed bodies of fresh water. RIVER is water that flows over the ground, usually towards a body of water, such as an ocean, lake or another river.

RIVER BASIN

Stages

1. Upper Course: here a river is fast-flowing and travels down the mountain. 2. Middle Course: here it flows more slowly. It also meanders. 3. Lower Course: here the river widens as it nears the sea or lake, forming an estuary,

River basin

Rivers contain fresh water. The parts of a river are:- The estuary is the wide part of a river. The place where it joins the sea. - A river basin which describes all the land a river flows through. - A river that flows into anotherriver is called a tributary. - A meander is when water flows like a snake. .

Activity

RIVERS OF SPAIN

Activity

WATERSHEDS OF SPAIN

A WATERSHED IS AN AREA OF LAND WHERE ALL THE WATER IS COLLECTED IN THE SAME PLACE

RIVERS OF GALICIA

GROUNDWATER

Characteristics: - The water travels through the soil by finding routes in porous rocks (rocks with holes in them). - The water sinks into the ground forming aquifers. These are underground collections of water.

Accessing groundwater.

Activity

NATURAL

MAN-MADE

Natural springs occur when two layers of impermeable rock trap groundwater and cause so much pressure that the water is forced upwards to the surface

Man-made wells are holes dug into the ground to access groundwater.