River Systems and Watersheds

What You'll Learn

Earth's magnetic field extends from the core into space, protecting us from solar wind. It creates the Van Allen radiation belts and causes auroras near the poles.

Key Words

earthquake
volcano

Materials Needed

clear container
rocks
sand
clay
water
plastic tray

Safety First

Do not look directly at the sun or bright lights.

Steps

Step 1 — Read

Read about Weathering and Erosion and write down three key facts.

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

Draw a detailed diagram of what you observe.

Step 4 — Record

Write a conclusion: what did your results show? Did they match your prediction?

Check Your Understanding

Question 1

1 of 3

What is a glacier?