CER Science Writing Prompt - Earth’s Changing Surfaces - Earth Science

Engage your students in evidence-based scientific writing with this CER (Claim-Evidence-Reasoning) prompt focused on gravitational force and mass—a core concept in middle and high school life science curricula.

This ready-to-use resource challenges students to analyze geoscience processes and Earth’s changing surface. Using the CER format, students must construct a scientific explanation to answer the question: "How do geoscience processes like weathering, erosion, earthquakes, or volcanic activity change Earth’s surface over time?”

🎯 Perfect for:

• Exit tickets
• Science journals
• Assessment practice
• Differentiated instruction
• NGSS-aligned writing tasks

✅ What's Included:

• CER Prompt (student-facing)
• Clear instructions for writing a Claim, supporting it with Evidence, and providing Scientific Reasoning to explain why the evidence supports the claim
• Optional sentence starters and graphic organizer for scaffolded support
• Answer key and sample response (optional for teacher use)
• Rubric

🔍 Learning Objectives:

• Apply the CER framework to explain real-world scientific phenomena
• Analyze observational data from a simple experiment
• Reinforce understanding of geoscience processes and Earth’s changing surface.
• Strengthen scientific writing and critical thinking skills

📚 Standards Alignment:

• NGSS MS-ESS2-2: Construct an explanation based on evidence for how geoscience processes have changed Earth’s surface at varying time and spatial scales.

This prompt is an excellent tool for reinforcing physical science concepts while building students’ scientific reasoning and writing abilities. Use it as a formative assessment, discussion starter, or extension activity in your next lesson on geoscience processes and Earth’s changing surface.