Weathering agents and rock changes are the focus of this Grade 4 Science resource on rocks, minerals, and geological processes. Students examine how physical and chemical weathering change rocks through observable processes and connect weathering to the formation of soil.

🪨 Explore How Rocks Change

Students identify physical and chemical weathering agents and explain their effects on rocks. The resource specifically addresses freeze-thaw weathering, abrasion, plant roots, oxidation, and dissolution. Students also connect visible evidence to geological processes, such as rounded boulders, pitted limestone, and rust-coloured rock.

🔎 Build Evidence-Based Science Thinking

The activities move beyond simple vocabulary recall. Students match observable rock features with the weathering process responsible for them, explain how rocks can break into smaller pieces, and describe how chemical changes to minerals can contribute to soil formation. The question mix includes multiple-choice questions, true-or-false statements, short-answer responses, a reading passage, matching, a cloze passage, an essay, and a “Did You Know?” activity.

📚 What Teachers Receive

• ✔️ Student worksheet focused on weathering agents and changes in rocks
• ✔️ Student Notes & Lesson Summary supplement for reinforcing key ideas
• ✔️ Separate Teacher Guide PDF with learning objectives, teaching tips, discussion questions, and common mistakes

🌱 Flexible Classroom Use

Use this Grade 4 weathering worksheet for science instruction on rocks and minerals, guided practice, independent work, review, or assessment preparation. The combination of selected-response and written tasks gives students opportunities to recognize weathering evidence, apply process vocabulary, and communicate their understanding of how rocks change over time.

For teachers working within the Ontario framework, this resource provides focused practice around weathering and geological processes while the accompanying notes and Teacher Guide support lesson preparation, classroom discussion, and clarification of common misconceptions.