6th Grade Strand 6 Concept 1

Characteristics and Structure of Earth’s

Lakes & Rivers

Characteristics and Structure of Earth’s

Lakes & RiversKelly Marcellus

EED 411Science Wiki

Kelly MarcellusEED 411

Science Wiki

Student Performance Objective

Student Performance Objective

Strand 6: Earth and Space Sciences

Concept 1: Structure of the earth and its atmosphere

Grade Level: 6 PO 2: Explain the composition, properties, and structure of the Earth’s lakes and rivers.

Strand 6: Earth and Space Sciences

Concept 1: Structure of the earth and its atmosphere

Grade Level: 6 PO 2: Explain the composition, properties, and structure of the Earth’s lakes and rivers. You will explain the characteristics and

structure of the Earth’s lakes and rivers.

What’s in Earth’s Rivers and Lakes?

What’s in Earth’s Rivers and Lakes?

You guessed it…water! And water is remarkable.

You can't taste it, smell it, and you can almost see right through it. It is the only thing on earth that can exist naturally as a solid, a liquid and a gas. Liquid water is

found in rivers, lakes and oceans. Solid water is water that is frozen, like snow and ice. Water is a gas when it is in the air of our

atmosphere as vapor or steam. Water is necessary for the survival of people, plants,

and animals….

You guessed it…water! And water is remarkable.

You can't taste it, smell it, and you can almost see right through it. It is the only thing on earth that can exist naturally as a solid, a liquid and a gas. Liquid water is

found in rivers, lakes and oceans. Solid water is water that is frozen, like snow and ice. Water is a gas when it is in the air of our

atmosphere as vapor or steam. Water is necessary for the survival of people, plants,

and animals….

Water is EverywhereWater is EverywhereWater covers over 70 percent of

the Earth's surface. It's everywhere, not only on the

surface, but also underground and in the atmosphere. Out of all the water on earth, 97

percent is salt water (found in the oceans). That means only

three percent of all the water on earth is fresh water.

Of the three percent fresh water, two percent is solid,

frozen in icecaps and glaciers. Out of all the water on earth, only one percent is drinkable, and much of that water is found in Earth’s lakes and rivers.

Water covers over 70 percent of the Earth's surface. It's

everywhere, not only on the surface, but also underground and in the atmosphere. Out of all the water on earth, 97

percent is salt water (found in the oceans). That means only

three percent of all the water on earth is fresh water.

Of the three percent fresh water, two percent is solid,

frozen in icecaps and glaciers. Out of all the water on earth, only one percent is drinkable, and much of that water is found in Earth’s lakes and rivers.

QuickTime™ and a decompressor

are needed to see this picture.

Earth’s Lakes & RiversEarth’s Lakes & RiversA major part of Earth’s natural balance

includes its large supply of water. Besides the enormous oceans, waterways such as

lakes and rivers circulate water through the continents and back out to sea.

Some of the rivers you know include:The Nile

The MississippiThe Congo

The Amazon The Rio Grande

A major part of Earth’s natural balance includes its large supply of water. Besides

the enormous oceans, waterways such as lakes and rivers circulate water through

the continents and back out to sea.

Some of the rivers you know include:The Nile

The MississippiThe Congo

The Amazon The Rio Grande


are needed to see this picture.QuickTime™ and a

decompressorare needed to see this picture.

Earth’s Lakes & RiversEarth’s Lakes & Rivers

Some of the lakes you know may include:

Lake SuperiorLake MichiganCaspian SeaLake Tahoe

Lake Pleasant

Can you think of any others?

Some of the lakes you know may include:

Lake SuperiorLake MichiganCaspian SeaLake Tahoe

Lake Pleasant

Can you think of any others?





What’s with the Giant Puddles?

What’s with the Giant Puddles?

Lakes are enormous holding areas of freshwater.

Some lakes are situated in mountain areas where snow from the surrounding

mountains drains into one area. The mountains form a bowl where water pools

up.

When the lake reaches a certain level, the water spills out and flows down the side of the mountain as a river or stream.

Lakes are enormous holding areas of freshwater.

Some lakes are situated in mountain areas where snow from the surrounding

mountains drains into one area. The mountains form a bowl where water pools

up.

When the lake reaches a certain level, the water spills out and flows down the side of the mountain as a river or stream.

Where does the River Go?

Where does the River Go?

Many of those rivers that you recognized are HUGE rivers spanning for miles, that are constantly flowing into the

ocean. The water goes from from higher elevations to lower

elevations and eventually the ocean, or even sometimes a lake

or reservoir.

Many of those rivers that you recognized are HUGE rivers spanning for miles, that are constantly flowing into the

ocean. The water goes from from higher elevations to lower

elevations and eventually the ocean, or even sometimes a lake

or reservoir. "Rivers flow through almost every country in the world. They carry water from Earth's mountain ranges, across sweeping plains, and down to the sea.” ~Ellen R. Butts

Composition, Properties, and

Structure of RIVERS


Structure of RIVERS Rivers have a significant value in the Earth’s water cycle because they are a key component to the transportation of surface water. They drain the landscape, and move water, and minerals towards the Earth’s oceans.

Rivers usually begin at a larger water source such as an upper level lake or bay and they generally flow downstream.

Rivers often merge with others before completing its journey to some larger water basin such as the sea.

Rivers have a significant value in the Earth’s water cycle because they are a key component to the transportation of surface water. They drain the landscape, and move water, and minerals towards the Earth’s oceans.

Rivers usually begin at a larger water source such as an upper level lake or bay and they generally flow downstream.

Rivers often merge with others before completing its journey to some larger water basin such as the sea.


Structure of RIVERS


Structure of RIVERS As water drains it generally begins in small creeks, which flow into larger and larger streams, and eventually into powerful flowing rivers.

The largest river on Earth is the Amazon, which drains much of South America.

The largest river in North America is the Mississippi River, which drains over 40% of that continent.

As water drains it generally begins in small creeks, which flow into larger and larger streams, and eventually into powerful flowing rivers.

The largest river on Earth is the Amazon, which drains much of South America.

The largest river in North America is the Mississippi River, which drains over 40% of that continent.


Structure of LAKES


Structure of LAKES Lakes contain about 90% of all the surface water found on Earth. (not including oceans)

Lakes are usually connected to some other water source such as a river, stream, pond, or underground system that carries water.

Lakes vary in depth and distance. They also vary in locations and altitudes, and can be found in all geographical locations and in all climatic zones.

Lakes contain about 90% of all the surface water found on Earth. (not including oceans)

Lakes are usually connected to some other water source such as a river, stream, pond, or underground system that carries water.

Lakes vary in depth and distance. They also vary in locations and altitudes, and can be found in all geographical locations and in all climatic zones.


Structure of LAKES


Structure of LAKES No one is certain as to how many actual lakes exist in the world.

Most lakes contain fresh water. However, sometimes the water found in a lake can become salty, just like the ocean. This happens when a lake does not have a stream, either above ground, or underground draining water away from it. As water enters a lake, it carries minerals with it. As this water dissolves, it leaves the minerals behind.

In order to continue existing, lakes must have a continual source of new water, otherwise they will eventually dry up.

No one is certain as to how many actual lakes exist in the world.

Most lakes contain fresh water. However, sometimes the water found in a lake can become salty, just like the ocean. This happens when a lake does not have a stream, either above ground, or underground draining water away from it. As water enters a lake, it carries minerals with it. As this water dissolves, it leaves the minerals behind.

In order to continue existing, lakes must have a continual source of new water, otherwise they will eventually dry up.

LakesLakes












decompressorare needed to see this picture.QuickTime™ and a








RiversRivers



























Education

6th Grade Strand 6 Concept 1