Water on Earth!

Mason and Luna are learning about the Earth's water cycle in their science class. In which states of matter is water found naturally in this cycle?

• solid, liquid and gas

• liquid and gas only

• solid and gas only

• liquid and solid only

Priya noticed that the water in the puddle outside her house was disappearing on a sunny day. What causes this evaporation?

• water freezing and melting

• energy from the sun

• precipitation

• large bodies of water

Rohan is having a glass of water with ice, and he notices that small water droplets are beginning to form on the outside of the glass. Which part of the water cycle do the droplets represent?

• evaporation

• transpiration

• condensation

• precipitation

Grace and David are observing the water cycle in their science class. Which of the following best describes the role of the sun in the water cycle?

• It causes precipitation to occur.

• It creates clouds in the sky.

• It cools down the ocean water.

• It provides energy for evaporation.

Ethan and Henry are learning about the water cycle in their science class. What is the primary role of the ocean in our water cycle?

• primary place where runoff starts

• source of most evaporation

• location of most condensation

• only place for precipitation

During a field trip, Mia and Noah observed a lake with steam rising from its surface. Which process in the water cycle does this steam represent?

• transpiration

• condensation

• evaporation

• precipitation

Sophia is observing her garden and notices that the leaves of the plants seem to be releasing water vapor into the atmosphere. What is this process called?

• transpiration

• evaporation

• precipitation

• condensation

Lily was observing the sky and noticed something forming above after a rainy day. Which of the following is a direct result of condensation in the water cycle?

• flow of rivers

• evaporation of water

• melting of ice

• formation of clouds

Charlotte and Kai were discussing how oceans cover over 70% of Earth's surface, and precipitation constantly adds freshwater to the

oceans. Yet, ocean levels remain relatively constant. Which of the following is the best

explanation for why ocean levels remain constant?

• Ocean water is continually absorbed underground into the ocean floor.

• Ocean water is continually changing from a liquid state into a vapor.

• It is very easy to change the ocean levels due to the large size of the oceans.

• Humans alter the level of the oceans due to our need for drinking water.

Charlotte and Kai are learning about the ocean's role in the water cycle. What is one role that the ocean plays?

• it provides salt for the environment

• evaporated ocean water comes down as rain

• wind causes waves on the surface of the ocean

• it has a complex food chain