Gr. 4 Science The Water Cycle

8. A huge underground water reservoir is called a _____.

7. Water that cannot soak into the ground and flows across the ground is called _____.

10. The process in which water moves between Earth's surface and its atmosphere is known as the _______.

9. Precipitation can occur as -----.

6. Rainfall that seeps underground and is stored there for a long time is called _____.

4. The process in which a gas cools off and starts to form back into a liquid is called ______.

3. The process in which a liquid heats up and turns into a gas is called ______.

2. What is the main source of energy for the water cycle?

1. The mixture of gases that surround Earth is the _______

4. As water droplets in clouds become too heavy, they fall to the Earth as _____.