Mason Leonard Study Guide

What is the main energy source for the water cycle?

• the Sun

• the Moon

• the Wind

• the Oceans

What percentage of Earth's water is saltwater? About _______ of Earth's water is saltwater.

• 97%

• 50%

• 10%

• 75%

What is adhesion in water? Adhesion in water is the attraction between water molecules and _______.

• other substances

• themselves

• air molecules

• light particles

What is an aquifer? An aquifer is an underground layer of water-bearing rock or sediment that stores _______.

• groundwater

• oil

• sand

• lava

What is an example of nonpoint source pollution? An example of nonpoint source pollution is runoff from _______ carrying pesticides.

• agricultural fields

• factories

• sewage treatment plants

• oil tankers

What process happens when water vapor cools into liquid? _______ happens when water vapor cools into liquid.

• Condensation

• Evaporation

• Sublimation

• Precipitation

What are tributaries? Tributaries are smaller streams or rivers that flow into a _______.

• larger river

• mountain

• lake

• ocean

What do watersheds do? Watersheds collect and channel precipitation into _______.

• rivers and streams

• mountain peaks

• deserts

• clouds

Most freshwater is in rivers and lakes.

• True

• False

Transpiration happens when water is absorbed by soil.

• True

• False