Identify geologic events
Free printable Grade 8 science worksheet for "Identify geologic events" — practice geologic time. No-prep, print or assign online.
Middle school students examine geologic time by identifying key events such as mass extinctions, era boundaries, and fossil appearances in Earth history. Teachers can use this worksheet to reinforce the geologic time scale after direct instruction or as a pre-assessment before a deep-dive into Earth processes. The skill of identifying geologic events helps students think in deep time, a foundational shift in scientific reasoning.
Learning objectives
- Identify major geologic events and place them on a relative timeline
- Distinguish between eons, eras, and periods using characteristic events
- Explain how geologic evidence supports the sequence of Earth's history
Answer Key
How to use this worksheet
- Click “Download Worksheet” and sign in with Google or email to get the PDF instantly.
- Print at home or in class for Middle School; it's no-prep, with no extra materials needed.
- Use the included answer key to mark it in seconds.
Frequently asked questions
Is the “Identify geologic events” worksheet free?
Yes. “Identify geologic events” is a free printable Science worksheet. Sign in with Google or email to download the PDF instantly.
What grade or age is this Science worksheet for?
It's designed for Middle School (ages 11–14), covering Geologic time.
Does it come with an answer key?
Yes — a matching answer key is included so you can grade it in seconds.
Create more worksheets in our Worksheet Studio
Generate fresh worksheets for any grade, topic, and language — free.
Open the Worksheet StudioMore for Middle School
Complementary and supplementary angles
Solve one-step multiplication and division equations with decimals and fractions
Identify solution criteria
Use evidence to explain how scientific models works or changes
You might also like
Classify geologic events
Identify rock layers
Identify relative dating
Identify fossil record
Compare observations of geologic events and describe the pattern you notice
