🔍 Part 1: Understanding the Fossil Record

1. What is the fossil record?

A collection of all known fossils arranged in order of age

A book about dinosaurs

A museum display of rocks

A list of extinct animals

2. In sedimentary rock layers (strata), where would you find the oldest fossils?

At the top layer

At the bottom layer

In the middle layer

Fossils are the same age in all layers

3. If Fossil A is found in a rock layer below Fossil B, which statement is true?

Fossil A is younger than Fossil B

Fossil A is older than Fossil B

Both fossils are the same age

We cannot tell which is older

4. Which of these help scientists understand Earth's history? (Check all that apply)

The order of fossils in rock layers

The types of organisms found as fossils

The age of different rock layers

The weather today

📚 Part 2: Interpreting Fossil Evidence

5. Complete the sentence: Rock layers form over time, with the __________ layers at the bottom and the __________ layers at the top.

Rock layers form over time, with the _____________ layers at the bottom and the _____________ layers at the top.

6. Explain in your own words why the fossil record is important for scientists studying Earth's history.

7. A scientist finds three fossils in different rock layers:
• Layer 1 (bottom): Trilobite fossil
• Layer 2 (middle): Ammonite fossil
• Layer 3 (top): Fern fossil

List these fossils from oldest to youngest:

Oldest: _________________ → _________________ → _________________: Youngest

8. Describe what you think scientists can learn about past environments from studying plant and animal fossils.

🎯 Part 3: Fossil Timeline Challenge

9. Imagine you are a scientist who has discovered fossils in four different rock layers. Draw and label a simple diagram showing how these layers would appear, with the oldest at the bottom and youngest at the top.

10. Why do you think some time periods have more fossils preserved than others? Give at least two reasons.