Oceans & Rivers Worksheet for 8-Year-Olds (30 Questions) — Grade 3 Geography: True/False, Fill-in-the-Blanks, MCQs & Short Answers

Instructions

Read each question carefully and answer to the best of your ability. Try to complete all the sections!

Part 1: True or False?

Read each sentence. If the sentence is correct, write True. If it is incorrect, write False.

1. There are seven oceans in the world. __________
2. Ocean water is very salty. __________
3. Rivers are made of saltwater. __________
4. The Pacific Ocean is the smallest ocean. __________
5. A sea is usually smaller than an ocean. __________
6. It is safe to drink water directly from a river without cleaning it. __________
7. Rivers always flow downhill. __________
8. Many different plants and animals live in oceans and rivers. __________

Part 2: Fill in the Blanks

Choose the correct word from the word bank to complete each sentence.

9. A very large body of salt water is called an __________.
10. There are __________ oceans on Planet Earth.
11. Water in a river is called __________ water because it is not salty.
12. The largest ocean in the world is the __________ Ocean.
13. A smaller body of salt water that is often partly surrounded by land is a __________.
14. A river often starts high up in the __________.
15. Humans use river water for drinking and for __________ to grow crops.
16. Moving river water can be used to generate __________, which powers our homes.

Part 3: Multiple Choice Questions

Circle the letter of the best answer for each question.

17. How many oceans are there in the world?

    a) Three

    b) Five

    c) Seven

18. What kind of water is found in oceans?

    a) Fresh water

    b) Sugary water

    c) Salty water

19. Which of these is NOT a common use for river water by humans?

    a) Farming

    b) Building roads

    c) Drinking

20. Which of these is the biggest?

    a) A sea

    b) An ocean

    c) A river

21. Where does a river usually end its journey?

    a) In the mountains

    b) In a desert

    c) In a sea or ocean

22. The smallest ocean in the world is the...

    a) Arctic Ocean

    b) Atlantic Ocean

    c) Indian Ocean

23. What is a major difference between an ocean and a sea?

    a) Oceans are warm and seas are cold.

    b) Seas are smaller and often partly enclosed by land.

    c) Oceans have fresh water and seas have salt water.

24. Besides drinking and farming, what is another way people use rivers?

    a) To travel on boats

    b) As a giant swimming pool for the whole city

    c) To hide treasure

Part 4: Answer These Questions

Write your answer on the lines below.

25. Name two of the world's five oceans.

    ____________________ and ____________________

26. What is the biggest difference between water in a river and water in the ocean?

    ____________________________________________________________

27. List two ways people use water from a river.

    1. ____________________

    2. ____________________

28. Why can't we drink water straight from the ocean?

    ____________________________________________________________

29. What is a sea?

    ____________________________________________________________

30. Are seas and oceans connected?

    ____________________________________________________________

Answer Key

Part 1: True or False?

1. False
2. True
3. False
4. False
5. True
6. False
7. True
8. True

Part 2: Fill in the Blanks

9. ocean
10. five
11. fresh
12. Pacific
13. sea
14. mountains
15. farming
16. electricity

Part 3: Multiple Choice Questions

17. b) Five
18. c) Salty water
19. b) Building roads
20. b) An ocean
21. c) In a sea or ocean
22. a) Arctic Ocean
23. b) Seas are smaller and often partly enclosed by land.
24. a) To travel on boats

Part 4: Answer These Questions (Sample Answers)

25. Any two of the following: Pacific, Atlantic, Indian, Arctic, Southern.
26. River water is fresh, and ocean water is salty.
27. Any two of the following: drinking, farming, cooking, cleaning, transportation (boats), generating electricity.
28. It is too salty for our bodies.
29. A sea is a body of salt water that is smaller than an ocean and is often partly surrounded by land.
30. Yes, seas are usually connected to the larger ocean.