Turn your students into science detectives with this NO PREP, engaging, real-world investigation focused on lunar craters and impact history. In this case file activity, students analyze Moon surface images, examine crater formation models, evaluate Earth–Moon comparisons, investigate impact evidence, rank possible causes, and build a scientific case to solve the mystery of why the Moon is covered in craters.

Instead of passively learning about impacts and lunar surface change, students actively investigate, analyze patterns, and reason through the evidence to uncover how meteoroids, asteroids, and comets strike the Moon and why those craters remain visible for so long. This activity makes a high-interest space science topic interactive, engaging, and easy to understand while strengthening critical thinking and literacy skills.

✅ NO PREP, no formatting, no issues. Simply download and go. Includes all instructions, answer key, rubric, and background reading students need to solve the case.

10-Part Activity Breakdown

Part 1 – Mission Briefing:
Students are introduced to a case involving the Moon’s heavily cratered surface and the question of why so many impact marks still remain visible.

Part 2 – Background Reading:
Students build foundational knowledge about impact craters, meteoroids, asteroids, comets, and why the Moon preserves surface features more easily than Earth.

Part 3 – Evidence Log:
Students examine 10 detailed evidence cards related to lunar surface images, impact model tests, lack of atmosphere, Earth comparisons, lack of liquid water, little geological activity, bright crater rays, surface age patterns, impacted Moon rocks, and repeated lunar observations.

Part 4 – Suspect Ranking:
Students rank possible explanations (meteoroids, asteroids, and comets hitting the surface, the Moon having almost no atmosphere, very little weathering and erosion, little geological activity, and the incorrect idea that most craters were volcanic) and justify their reasoning using scientific evidence.

Part 5 – Pathway Tracking:
Students trace how a space object moves toward the Moon → strikes the surface → forms a crater → and remains visible because the Moon changes so slowly.

Part 6 – Impact Analysis:
Students analyze how incoming space objects shape the lunar surface, how the Moon’s environment preserves craters, and how crater patterns help scientists understand lunar and solar system history.

Part 7 – The Big Question:
Students explain why the Moon is covered in craters and how both impact events and long-term surface preservation contribute to that pattern.

Part 8 – CER Writing:
Students construct a scientific argument using Claim–Evidence–Reasoning.

Part 9 – Solutions & Action Plan:
Students propose ways to study crater formation, crater preservation, and how crater research helps with future lunar exploration.

Part 10 – Reflection:
Students reflect on how the Moon records impact history and why its surface looks so different from Earth’s.

What Students Will Learn

• What causes craters to form on the Moon
• Why meteoroids, asteroids, and comets create impact craters
• Why the Moon has more visible craters than Earth
• How the lack of atmosphere affects incoming objects
• How little weathering and erosion help preserve lunar craters
• Why limited geological activity helps old craters remain visible
• How bright crater rays and damaged rocks provide evidence of impacts
• How crater patterns can reveal the relative age of lunar surfaces
• How to use Claim–Evidence–Reasoning (CER) to support scientific explanations
• How scientists use craters to study the history of the Moon and the solar system

This activity blends space science, engineering, physical science, critical thinking, and literacy skills into one high-interest, structured lesson that keeps students thinking like real-world scientific investigators.

This Mystery Is Perfect for:

• Space and space exploration units
• Moon and lunar surface lessons
• Impact crater lessons
• Earth and space science classes
• Middle school science classes
• Sub plans, review days, or project-based learning

You can find this Mystery Activity as well as the others I have created inside my Space and Space Exploration Mystery Activity Bundle at a significant discount.

No prep, no formatting, no issues.

Simply download, print (or upload to your class site) and you're all set.

What’s Included

• A complete student case file with guided worksheets for every step of the investigation
• 10 detailed evidence cards based on real-world space exploration issues --> Evidence cards include two versions: one with images and one without images
• A full teacher answer key with sample responses and grading support
• A full marking rubric that covers all key aspects of the mystery activity

Why Teachers Love This Resource

• Fully structured and print-and-go – Everything is ready to use with clear directions and built-in scaffolding
• High engagement without extra classroom management – The detective format naturally hooks students
• Real-world relevance students immediately understand
• Builds both science and ELA skills – Includes analysis, explanation, and CER writing
• Flexible for any schedule – Use in one class period, over two days, or as a mini-project

Time Required

• 2 class periods
• Can be extended into a 3-day mini-project

Google Classroom and Distance Learning Ready

• This resource is perfect for in-class or distance learning and integrates seamlessly with Google Classroom.
• It automatically creates a copy of the reading and places it directly into your Google Drive with a single click.
• Purchase → Open → Click → Assign to your students
• The reading also includes a Microsoft Word and PDF version.
• Having all three options allows you to assign the activity without worrying about formatting issues, and ensures access for all students regardless of device or learning environment.

No prep, no formatting, no issues. Simply download, print (or upload), and you're all set.

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If you have any questions please feel free to send me an email - devon@teachwithfergy.com