48
Lesson 48 of 84 · Earth's History
ExperimentFossils: Clues to the Past (Part 2)
What You'll Learn
Fossils are preserved remains or traces of ancient organisms. They form when organisms are buried in sediment that hardens into rock over millions of years.
Key Words
- sediment
- igneous
- metamorphic
Materials Needed
- newspaper
- spray bottle
- cups
- thermometer
- rain gauge
Safety First
- Wear safety goggles when mixing liquids.
- Wash hands after handling materials.
- Be careful with scissors — ask an adult for help if needed.
Steps
Step 1 — Read
Read and learn: Fossils are preserved remains or traces of ancient organisms. They form when organisms are buried in sediment that hardens into rock over millions of years.
Step 2 — Do
Create a labeled diagram of what you built or observed.
Step 3 — Observe
Compare the before and after states.
Step 4 — Record
Write your conclusion: did the results match your hypothesis?
Check Your Understanding
Question 1
1 of 3Which layer of Earth is the thinnest?