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WorksheetsEarth's Water EOU Review
Total questions: 62
Worksheet time: 31mins
What type of water is safe to drink when cleaned or treated?
Saltwater
Runoff
Freshwater
Ocean water
Which type of water makes up most of Earth’s water?
Freshwater
Groundwater
Saltwater
Rainwater
Where is freshwater found?
Oceans
Rivers, lakes, and streams
Saltwater seas
Icebergs only
What is water that flows over land called?
Precipitation
Groundwater
Runoff
Surface water
What happens during evaporation?
Water vapor turns into liquid
Water soaks into the ground
Liquid water turns into gas
Snow falls from the sky
What forms when water vapor cools and turns into liquid?
Rain
Evaporation
Condensation
Ice
Which is an example of precipitation?
Fog
Water vapor
Hail
Steam
What is the main source of energy for the water cycle?
Moon
Rain
Sun
Wind
What is groundwater?
Rain that evaporates
Water stored in clouds
Water that soaks into the soil
Saltwater below sea level
What does “conserve” mean?
Waste water
Use wisely
Let it run
Freeze water
Which part of the ocean is the shallow edge of a continent?
Ocean plain
Trench
Continental shelf
Mid-ocean ridge
What is a deep, narrow part of the ocean floor?
Trench
Slope
Ridge
Plain
What is the flat, deep floor of the ocean called?
Slope
Trench
Ocean plain
Shelf
What are tiny pieces of broken rock called?
Trench
Sediment
Ridge
Soil
What is a mid-ocean ridge?
Deep trench
Flat plain
Mountain range on the ocean floor
River under water
What is a surface wave?
Ice sheet
Rainwater wave
Wave on top of ocean water
Earthquake wave
What causes surface currents?
Wind
Rain
Whales
Sunlight
What causes deep currents?
Boats
Changes in water temperature
Hurricanes
Waterfalls
What helps plants grow by soaking into the ground?
Saltwater
Precipitation
Groundwater
Snow
What is an ocean trench?
A wave
A tall mountain
A deep valley in the ocean
A shelf
What is a food chain?
A group of clouds
A path that energy takes from one living thing to another
A group of rocks
A group of whales
What is a food web?
A collection of plants
Several food chains linked together
A spider web in the ocean
A fishing net
What are phytoplankton?
Tiny ocean plants
Baby fish
Shells
Coral
What are zooplankton?
Large whales
Tiny ocean animals
Small plants
Shells
What do producers do?
Eat other animals
Make their own food
Swim in schools
Hunt for prey
What do consumers do?
Make sunlight
Eat other living things
Float in water
Photosynthesize
What is bioluminescence?
Light from the sun
Light made by deep-sea organisms
Reflection from ice
Heat from rocks
What zone has no sunlight?
Sunlight zone
Twilight zone
Dark zone
Clear zone
Where do most ocean animals live?
Deep zone
Sunlight zone
Mountain zone
Waterfall zone
What helps move warm and cold water around the world?
Rain
Surface currents
Trenches
Sediment
What causes tides?
Wind
Earthquakes
The moon’s gravity
Volcanoes
What causes runoff?
Snowfall
Water running off land after precipitation
Steam
Bioluminescence
Why does freshwater freeze faster than saltwater?
Salt is heavy
Salt lowers freezing point
Salt is cold
Salt is slippery
What is one way to conserve water?
Leave the faucet running
Use a sprinkler all day
Turn off water while brushing teeth
Wash the car every day
What is the ocean ecosystem?
Only fish in the ocean
All living and nonliving things in the ocean
Rocks and shells
Just coral reefs
What kind of water is in oceans?
Freshwater
Groundwater
Saltwater
Ice water
What layer of the ocean is dim like evening?
Sunlight zone
Twilight zone
Dark zone
Ridge zone
What lives in the dark zone?
Plants that use sunlight
Bioluminescent animals
Zooplankton
Sea turtles
What is the purpose of water treatment plants?
To make water salty
To clean dirty water
To freeze water
To collect waves
What can pollute water?
Ice
Wind
Trash and oil
Plants
What helps move nutrients in the ocean?
Boats
Surface currents
Deep currents
Rain
What do animals in the deep ocean use to get energy without sunlight?
Water pressure
Chewing rocks
Chemosynthesis
Waving fins
What is found in the center of the ocean floor and forms new land?
Ocean plain
Mid-ocean ridge
Shelf
Trench
What ocean feature is closest to the shore?
Mid-ocean ridge
Continental shelf
Ocean trench
Deep current
What is a large body of water surrounded by land?
Ocean
River
Lake
Runoff
What small body of still water might be in a park?
Stream
Pond
River
Sea
What body of water flows into lakes or oceans?
Runoff
Glacier
River
Ice
What do we call a moving body of freshwater?
Ocean
Lake
Stream
Sediment
What tool brings groundwater to the surface?
Bucket
Drain
Well
Filter
Which water form falls as soft white flakes?
Rain
Snow
Sleet
Hail
Which statement best explains why freshwater is a limited resource even though Earth is mostly water?
Most of Earth's water is freshwater
Most freshwater is stored underground or frozen in glaciers
Freshwater can be created from saltwater easily
Rain provides unlimited freshwater
Why do surface ocean currents affect global climate patterns?
They carry freshwater to dry places
They move warm and cold water that influences temperatures worldwide
They help the ocean freeze slower
They create tsunamis
What is one important role of the water cycle in Earth’s ecosystems?
It helps clouds form above cities only
It helps water move to support life across land and ocean
It makes volcanoes erupt
It creates only ocean currents
Which part of the water cycle helps form groundwater?
Evaporation
Condensation
Precipitation soaking into the soil
Ocean wave movement
Why do deep ocean animals use chemosynthesis instead of photosynthesis?
They live where light from the Sun does not reach
They don’t like sunlight
They are too close to volcanoes
Photosynthesis only works in freshwater
Where is new ocean floor created?
Trench
Ocean plain
Mid-ocean ridge
Continental shelf
If ocean currents stopped completely, what would likely happen to Earth’s climate?
Temperatures would stay the same
Global climates could shift drastically due to less water movement
Hurricanes would increase
Rainfall would double
Why are clouds formed during the condensation step of the water cycle?
Water turns into ice
Water vapor cools and becomes liquid droplets that form clouds
Water is pulled underground
Sunlight freezes the air
Why are phytoplankton essential to the ocean food web?
They eat fish
They clean the ocean floor
They are producers and make food for many organisms
They use chemosynthesis
How does pollution impact the water cycle and the ocean ecosystem?
It makes rainfall stop
It adds nutrients to water
It contaminates water and harms plants and animals
It helps form sediment
What is the main reason saltwater doesn’t freeze as quickly as freshwater?
It is deeper in the ocean
Salt lowers the freezing point of water
Saltwater has more animals in it
It gets more sunlight than freshwater
Which of the following BEST explains how groundwater is connected to the water cycle?
It only forms during evaporation
It is collected in oceans
It comes from precipitation soaking into the soil
It is frozen rain under the ground
