25
Lesson 25 of 84 · Fossils
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
- sand
- clay
- water
- plastic tray
Safety First
- Use materials only as directed in the experiment.
- Keep small objects away from young children.
Steps
Step 1 — Read
Talk about what you already know about Fossils.
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?