Tides and the Moon (Part 2)

What You'll Learn

The water cycle describes how water moves through Earth's systems. Water evaporates from oceans, condenses into clouds, falls as precipitation, and flows back to the ocean.

Key Words

natural resource
conservation
tectonic plates

Materials Needed

sand
clay
water

Safety First

Keep small objects away from young children.

Steps

Step 1 — Read

Review the background information on The Water Cycle before starting.

Step 2 — Do

Create a model of the water cycle in a bowl: place warm water in a bowl, cover with plastic wrap, put ice on top, and observe condensation and precipitation.

Step 3 — Observe

Compare the before and after states.

Step 4 — Record

Write your conclusion: did the results match your hypothesis? What would you change next time?

Check Your Understanding

Question 1

1 of 3

What is erosion?