25
Lesson 25 of 84 · Earth Materials
ExperimentHow the Earth Changes
What You'll Learn
A compass always points north because Earth has a magnetic field.
Key Words
- lake
- ocean
Materials Needed
- magnifying glass
- newspaper
- spray bottle
- cups
- thermometer
- rain gauge
Safety First
- Protect your work surface with newspaper or plastic.
- Adult supervision recommended.
- Do not taste any materials.
Steps
Step 1 — Read
Talk about what you already know about Earth Materials.
Step 2 — Do
Sort rocks by color, size, and texture. Record how many are in each group.
Step 3 — Observe
Compare what happened to what you predicted.
Step 4 — Record
Tell the class one thing you learned today.
Check Your Understanding
Question 1
1 of 3Which tool measures rainfall?