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So we learned about oceans, which are very large bodies of water, but we also have seas.

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A sea is a body of water that is smaller than an ocean, but still very big.

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Two seas that surround Spain are the Balearic Sea and the Mediterranean Sea.

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Another famous sea is the Caribbean Sea, which extends from Mexico to Venezuela.

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A smaller, long body of water is called a river.

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There are three parts to a river.

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A mouth, a tributary, and a source.

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The source of a river is where the river starts.

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The mouth of a river is where the river pours into a larger body of water, like a lake or the ocean.

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A tributary is a smaller river that flows into a larger river.

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What is the longest, the longest river in the world?

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It's the Nile River.

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what's the widest river in the world it's the amazon river so we already know what mountains

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are but when you have a big group of mountains many mountains they're called a mountain range

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What is the longest mountain range in the world?

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It's the Andes. The Andes is the longest mountain range in the world.

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What is the highest, the highest mountain in the world?

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It's Mount Everest. Mount Everest is the highest mountain in the world.

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out. Mount Everest is in a mountain range called the Himalayas. The Himalayas are in

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Nepal. Let's practice our landform vocabulary. A plane. A plane is a low area of flat land.

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A valley. A valley is a low area of land between mountains.

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A mountain range. A mountain range is a group of mountains. A mountain is a large rocky

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area of high lands. Plateau. A plateau is a high area of flat lands. Slope. A slope

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is the part of a mountain people ski down.