Heat and temperature worksheets for Grade 7 Science help students connect particle motion to everyday changes in materials. In this Alberta science lesson, students explore how heating and cooling affect particle energy, spacing, and movement, then apply the particle model to thermal expansion, contraction, and changes of state.

Rather than treating temperature and heat transfer as interchangeable ideas, students examine what each means and how energy moves between warmer and cooler objects. Everyday examples, including a metal spoon in warm water, bridge expansion joints, railway tracks, and thermometer liquids, make abstract particle behaviour easier to connect with observable evidence.

Explore the science behind changing materials

Students work with the particle model to explain why solid particles vibrate around fixed positions, liquid particles move past one another, and gas particles move freely. They investigate how heating usually increases average kinetic energy, how cooling slows particle motion, and how melting and freezing change particle arrangement and movement.

The worksheet also addresses a common misconception: particles do not normally become larger when a material is heated. Instead, thermal expansion often occurs because the average spacing between particles increases. Students apply this idea to structural design and consider why materials need room to expand and contract as temperatures change.

What students practise

• Multiple-choice questions that assess particle motion, temperature, thermal energy transfer, expansion joints, and experimental design.
• True-or-false statements that challenge misconceptions about cooling, particle size, and thermal expansion.
• Short-answer explanations using particle models to describe expansion and distinguish temperature from energy transfer.
• A labelled diagram activity and a categorization task that support visual and conceptual understanding.
• A short-note activity that provides an additional opportunity to consolidate key ideas.
• A reading passage introducing particle behaviour, heating and cooling, changes of state, and practical applications of expansion.

Included with your purchase

• Science worksheet focused on particles, temperature, and thermal expansion.
• Separate PDF answer key for checking student responses.
• Student Notes lines at the bottom of the worksheet for recording important ideas.
• Teacher Guide included in the answer key PDF, with learning objectives, teaching tips, discussion questions, and common mistakes.

Practical classroom uses

Use this Grade 7 heat and temperature practice as a lesson companion, guided review, independent assignment, homework activity, or formative assessment. The reading passage can introduce the topic, while the questions help you check whether students can apply particle theory rather than simply recall definitions. Short-answer prompts also provide opportunities to assess scientific communication and evidence-based explanations.

For a discussion or investigation, invite students to describe how they would test whether heating changes the length of a metal strip. Ask them to identify observable evidence and explain how to keep the test fair. These prompts connect scientific reasoning with the practical decisions engineers make when designing structures exposed to changing temperatures.

Designed for Grade 7 Science: Heat and Temperature, this resource supports classroom teaching of particle motion, thermal energy transfer, changes of state, and thermal expansion within the Alberta curriculum context specified for the resource. The separate answer key and accompanying teacher guidance make it easier to check learning, address misconceptions, and plan follow-up discussions.