5th Gr. - 2nd Semester Test - 2024/2025

Where does the water go when water evaporates from a puddle on the street?

• It goes into a nearby river or stream.
• It sinks into the street.
• It rises into the atmosphere.
• It goes into outer space.

About 97 percent of all the water on Earth is in the form of ______________________________ .

• fresh water
• salt water

Which best explains why it is important for humans to conserve freshwater?

• Earth’s water supply is shrinking.
• Earth’s water supply is growing larger.
• Once we use all of Earth’s freshwater, it is gone forever.
• Only a small fraction of Earth’s water is freshwater, and everyone needs it.

Which are sources of freshwater. Select all that apply.

• rivers
• oceans
• aquifers
• reservoirs

_________________________ water can harm living things.

• Clean
• Polluted

All water on Earth is recycled through _____________________________________ .

• the water cycle
• pockets of nitrogen
• exhaled gas
• dead organic material

Identify the statement that best describes where Earth's freshwater can be found.

• Most of the freshwater is trapped in glaciers and ice caps.
• Earth's freshwater is spread out equally over ice, groundwater, and surface water.
• Most of the freshwater on Earth is found underground. The rest is stored as surface water.
• Earth's freshwater is found mostly in rivers and streams. Very little is found in glaciers or ice caps.

Why is it important to clean, conserve, and protect water?

• Water is expensive.
• Water is a living thing.
• Water can be frozen.
• Water is a limited resource.

The temperature at which liquid changes into a gas is a substance's ____________________________ .

• boiling point
• freezing point

A property of matter that keeps an object moving in a straight line and at a constant speed is known as __________________ .

• free fall
• inertia
• trajectory