Grade 2 Science Practice Test: Water on Earth
- Water on Earth
- 10 questions
- 13 minutes
Water is found in many places on Earth, and it can be solid or liquid. Think about where you have seen water and what form it was in.
Tap an option to mark your answer. You can change your mind, or tap the same option again to leave the question blank. The correct answers and explanations appear when you finish the test.Tap an option to answer; tap it again to leave the question blank.
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Question 1
Where is most of Earth's water found?
Correct answer: B
Oceans cover most of Earth and hold far more water than all rivers, lakes and clouds together.
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Question 2
Which of these has salt water?
Correct answer: A
Ocean water is salty. Rain, mountain streams and glaciers are fresh water.
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Question 3
Large areas near the South Pole are covered with water in which form?
Correct answer: C
It is very cold near the South Pole, so most of the water there is frozen into thick ice.
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Question 4
What is a body of water that has land all around it?
Correct answer: A
A lake is surrounded by land. A river flows from place to place, and an ocean is too big to be surrounded by land.
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Question 5
Which body of water flows from higher land down to lower land?
Correct answer: B
A river moves downhill until it reaches a lake or the ocean. Ponds, lakes and puddles mostly stay in one place.
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Question 6
On most maps, what does the color blue show?
Correct answer: C
Mapmakers use blue for oceans, lakes and rivers. Forests are often green.
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Question 7
When liquid water freezes, what does it become?
Correct answer: B
Water freezes into ice when it gets cold enough. Ice is the solid form of water.
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Question 8
After a rain, there is a puddle on a hard sidewalk. On a hot, sunny day the puddle disappears.
Where did the water go?
Correct answer: A
The Sun warmed the water, and it turned into an invisible gas called water vapor. Water cannot soak through a hard sidewalk.
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Question 9
Which of these is a solid form of water?
Correct answer: D
Snow is made of tiny ice crystals, so it is solid. Rain and dew are liquid, and steam is a gas.
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Question 10
What is a glacier?
Correct answer: D
Glaciers are giant sheets or rivers of ice that slide very slowly over land. They hold a lot of Earth's fresh water.
Questions you leave blank are not counted as wrong.
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