Earth’s Bodies of Water

trench current tidal wave tide water cycle tributary river system Vocabulary Words trench current tidal wave tide water cycle tributary river system drainage basin rift reservoir

Trench: A deep ocean valley.

Current: Giant stream of ocean water.

Tidal wave: A giant ocean wave created by Earthquakes and severe storms.

Tide: Regular rise and fall of the oceans.

Water cycle: The circulation of water from the surface of the Earth to the atmosphere and back.

Tributary: Small rivers that feed into larger rivers.

River System: A river and all its tributaries.

Drainage Basin: The land drained by a river system.

Rift: A crack in the Earth’s crust.

Reservoir: A human made lake

Match the Vocabulary word with the definition ____Rift ____Tide ____ Tidal wave ____Trench ____ Tributary ____River system

Earth’s Bodies of Water Humans and plants need water to survive.

Earth’s Bodies of Water There are many sources of water in the world: Oceans Streams and Rivers Lakes

https://www.youtube.com/watch?v=bNWuQD7QHBc

Earth’s Oceans Oceans are large bodies of water that covers much of the planet. Oceans are the areas between continents.

Earth’s Oceans The largest and deepest Ocean is the Pacific Ocean.

Earth’s Oceans The Pacific Ocean covers nearly one third of the Earth’s surface.

Earth’s Oceans The Earth’s Oceans has physical features like those on land. It has mountain ranges, basins and valleys

Mountain Range

Mariana Trench

More than 99% of water supply cannot be used for drinking? The Water We Drink More than 99% of water supply cannot be used for drinking? WHY?

The supply of drinking water is replaced by the water cycle.

Ground water: Water that is stored within the Earth. Surface water: Water that the soil does not soak up.

The Water We Drink Most of the water we drink comes from surface water in rivers and lakes.

Streams and Rivers They are bodies of water that flow over a land in a channel.

What is a tributary? What is a river system? Streams and Rivers Streams flow from a high ground to a low ground. What is a tributary? What is a river system?

All the continents except Antarctica have rivers. Why doesn’t Antarctica have any rivers?

Rivers In Africa: The Nile and The Congo. In Asia: Chang Jiang and Huang He. In Australia: Murray Europe: Danube North America: Mississippi South America: Amazon

The Earth’s longest river is the Nile

The Amazon has the largest river system.

The Amazon has the largest river system because it has several tributaries that flow into it

Uses of Rivers Rivers Drinking water Transport Food Fertile Soil Energy Drinking water

Lakes A lake is a body of water surrounded by land. There are lakes in every continent of the world.

How are lakes formed?

Lakes can be formed in several ways: When water fills a low place on the Earth’s surface.

2. Glaciers carve a hole in the Earth’s surface 2. Glaciers carve a hole in the Earth’s surface. When the glaciers melt, the water fills the holes and a lake is formed.

3. Lakes are formed when rain water collects in holes made in other ways.

Crater Lake Crater Lake was formed when water collected in the crater of an extinct volcano

Lake Baikal A lake can be formed when water collects in a huge crack or rift.

Some bodies of water that are called seas are actually large lakes. Some of these are:

Dead Sea

Sea of Galilee

Caspian Sea

Not all lakes are made by nature Not all lakes are made by nature. Some are made when people build dams to control flooding or for electricity.

How are lakes formed?

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