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1.20 Distinguish the difference between a continent, mountain, river, lake, and ocean.

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Click on each post. You must watch a movie or read (listen) to an article. When you are done answer the questions.

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Watch the clip and answer these questions:
1.  What is an ocean?
2. Name the different oceans.

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Read the article and answer these questions:
1. What is a lake?
2. Name 2 facts about lakes

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Lakes contain about 90% of all the surface water on Earth, not including oceans. Lakes form when water finds its way into a basin. In order to survive they need to have a constant flow of new water, otherwise they'll eventually dry up. So how do lakes form?

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Click on the link below. Locate the area on the map that is being asked.

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World: Continents and Oceans - Map Quiz Game

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World: Continents and Oceans - Map Quiz Game: There are seven continents and five oceans on the planet. In terms of land area, Asia is by far the largest continent, and Australia and the Oceania region is the smallest. The Pacific Ocean is the largest ocean in the world, and it is nearly two times larger than the second largest.

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Read the article and answer these questions:
1. What is a continent?
2. Name the 7 continents.

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DK Find Out! | Fun Facts for Kids on Animals, Earth, History and more!

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Visit DK Find Out! to learn about dinosaurs, space, animals, nature & more. Fun learning activities for kids with videos, quizzes & galleries at DKFindOut.com

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Watch the clip and answer these questions:
1. What is a river?
2. Can rivers be different sizes?
3. What is a river's origin called?
4. Do rivers flow down hill or uphill?
5. What is a mouth?

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Emerald Robinson: Hi! My name is Emerald Robinson and in this What Is video we are going to try to determine what exactly defines a river.

A river is a natural stream of fresh water that has a current and moves toward another body of water such as an ocean, lake, or another river. Rivers can be of different sizes and local terms can cause the actual definition of a river to be vague. What one person calls a river another might term a brook, a real, or a creek.

A river's origin is called its source. Since rivers flow downhill sources are usually high in the mountains where water comes from snow melt or an underground spring.

A river flows between its side or banks in what's called a channel. The channel increases its size as the river gains water from other smaller streams or tributaries. A river's journey ends when it meets a lake or the sea at a point called its mouth. Rivers play an enormous role in shaping the earth through erosion creating geological formations such as canyons. Rivers create as well as destroy. A river's mouth is often clogged by silt and dirt that has been carried down the river's path. This sometimes forms a land mass called a delta. Although there is a little disagreement among geographers it's generally accepted that the world's longest river is Egypt's Nile River which stretches over 4000 miles from Lake Victoria in Central Africa to the Mediterranean Sea. The biggest river though is unquestionably the Amazon River located in South America. Although it's not as quite as long as the Nile, it carries almost 20% of the world's fresh water in its bed as it flows from its source in Andes mountain of Peru to its mouth on the Atlantic ocean.

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Emerald Robinson: Hi! My name is Emerald Robinson and in this What Is video we are going to try to determine what exactly defines a river. A river is a natural stream of fresh water that has a current and moves toward another body of water such as an ocean, lake, or another river.

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1. Write three ways that mountains can be formed.

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Have you ever taken the time to look at the world around you and at its natural beauty? From oceans and dense forests to sweeping and rolling hills, nature paints a picture that can take your breath away.

Maybe one of the most incredible sights on Earth, though, is a range. From the Himalayas to the Rocky Mountains, there's just something about those tall, peaks that stirs the soul.

Have you ever WONDERed how mountains got there, though? Did they fall out of the sky and land where they are? Not quite! Read on to learn more about how mountains are formed.

There are several different ways that mountains can form. One thing these methods have in common is that they all take millions of years!

Many mountains were formed as a result of Earth's plates smashing together. The Earth's crust is made up of multiple plates that still move today as a result of activity below the surface.

When two plates converge, their edges can crumple kind of like an aluminum can does when you crush it. The result of these plates crumpling is huge slabs or rock being pushed up into the air. What are those called? Mountains, of course!

For example, the plates that lie underneath India and Asia crashed into each other over 25 million years ago. What happened? The Himalayas, including Mount Everest, were formed. And they're still pushing against each other. That means the Himalayas continue to grow even today!

Mountains can also form along natural fault lines. These are places in Earth's crust where plates grind against each other. Occasionally, two plates will grind together, resulting in one plate lifting up and tilting over. The result? A range, like the Sierra Nevada range in California.

One other way mountains form is as the result of activity below Earth's surface. Sometimes rock called gets pushed up toward the surface. When that happens, it cools and forms hard rock. Eventually, the softer rock above it erodes to reveal a dome-shaped below. If the actually breaks through to the surface, you get a volcano!

Mountains can also form by way of . In an area with a high plateau, rivers and streams can carve away stone in the form of deep channels. Over millions of years, what is left is a between deep river valleys!

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Have you ever taken the time to look at the world around you and at its natural beauty? From oceans and dense forests to sweeping and rolling hills, nature paints a picture that can take your breath away. Maybe one of the most incredible sights on Earth, though, is a range.