Colorful educational worksheet teaching children about different bodies of water through matching, labeling, and ordering activities.

Let's solve each task step by step and explain the reasoning.

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Task 1: Match the words to the definitions

We are given four terms: Ocean, River, Lake, Sea, and four definitions. We need to match each term with its correct definition.

#### Definitions:
1. A large natural stream of water that empties into another body of water
→ This describes a River. Rivers flow from higher elevations (like mountains) and often end in lakes, seas, or oceans.

2. A body of salt water that is located where the land and ocean meet
→ This describes a Sea. Seas are typically smaller than oceans and are usually connected to them, often found near coastlines.

3. A great body of salt water
→ This describes an Ocean. Oceans are the largest bodies of salt water on Earth (e.g., Pacific Ocean).

4. A large inland body of fresh water or salt water
→ This describes a Lake. Lakes are surrounded by land and can be either freshwater (like Lake Superior) or saltwater (like the Dead Sea).

#### Matching:
- Ocean → A great body of salt water
- River → A large natural stream of water that empties into another body of water
- Lake → A large inland body of fresh water or salt water
- Sea → A body of salt water that is located where the land and ocean meet

✔ Correct matches:
- Ocean → A great body of salt water
- River → A large natural stream of water that empties into another body of water
- Lake → A large inland body of fresh water or salt water
- Sea → A body of salt water that is located where the land and ocean meet

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Task 2: Label the pictures

There are four images:

1. First image: A large body of water surrounded by mountains — this is a Lake.
2. Second image: A vast open expanse of water under the sun — this is an Ocean.
3. Third image: Water near land with palm trees and a beach — this is a Sea.
4. Fourth image: A narrow flowing stream through greenery — this is a River.

✔ Labels:
- Image 1 → Lake
- Image 2 → Ocean
- Image 3 → Sea
- Image 4 → River

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Task 3: Order these bodies of water by their usual size: sea, lake, ocean

We are to order: sea, lake, ocean from biggest to smallest.

Let’s compare sizes:

- Ocean: The largest — covers about 70% of Earth’s surface. Examples: Atlantic, Pacific.
- Sea: Smaller than an ocean but still large — often part of an ocean or adjacent to it. Example: Mediterranean Sea.
- Lake: Usually much smaller than seas and oceans — entirely inland. Example: Lake Victoria.

So, in order from biggest to smallest:
1. Ocean
2. Sea
3. Lake

✔ Answer:
- Biggest → Ocean → Sea → Lake → Smallest

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✔ Final Answers:

#### Task 1: Matching
- Ocean → A great body of salt water
- River → A large natural stream of water that empties into another body of water
- Lake → A large inland body of fresh water or salt water
- Sea → A body of salt water that is located where the land and ocean meet

#### Task 2: Labeling
1. Lake
2. Ocean
3. Sea
4. River

#### Task 3: Ordering by size
- Biggest → Ocean → Sea → Lake → Smallest

This completes all tasks!