Energy Transfer Today

Alberta Curriculum Connections

Science 7 - Energy and Heat

• General Outcome: Describe and analyse forms of energy, energy transfer, and transformations in systems (SCI 7-3)
• Specific Outcome: Investigate and describe heat transfer through conduction, convection, and radiation (SCI 7-3.6)
• Skills: Developing and using models; conducting investigations; communicating scientific ideas effectively

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Learning Objectives

By the end of this lesson, students will be able to:

• I can explain the difference between heat and temperature.
• I can describe heat as energy in motion.
• I can explain heat transfer by radiation.
• I can give three real-world examples of heat transfer by radiation.

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Success Criteria

Students will demonstrate their understanding by:

• Accurately stating that temperature is a measure and heat is energy that moves.
• Participating in discussion by proposing hypotheses about heat transfer without contact.
• Predicting and explaining the results of the black and white surface experiment thoughtfully.
• Correctly completing a true/false and short answer exercise on heat and radiation.
• Writing a clear sentence describing how the Sun heats Earth using radiation.

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Lesson Breakdown (61 minutes)

1️⃣ Engaging Scenario (5 min)

• Teacher says:
  “Imagine you are an astronaut floating in space, where there is no air. How can you still feel the Sun’s heat? Discuss with your tablemates for 2 minutes and come up with hypotheses.”
• Student tasks:
  Students discuss and share ideas. Expected ideas:
  • The Sun sends energy.
  • Light carries heat.
  • Heat does not require air to be transferred.
• Teacher connects:
  “Today, we will discover how thermal energy travels without needing contact.”

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2️⃣ Prior Knowledge Check (10 min)

• Question 1: “What is the difference between heat and temperature?”
• Students respond: (Record on board)
  • Temperature is a degree (measure).
  • Heat is energy.
  • Heat moves from one place to another.
• Teacher clarifies:
  “Temperature measures the average energy of particles. Heat is energy that moves between objects.”
• Question 2: “What happens to particles in water when heated?”
• Expected responses:
  • Particles move faster.
  • Their kinetic energy increases.
• Visual aid: Draw or project particle movement diagram emphasizing spacing and speed.

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3️⃣ Introducing Heat Transfer Modes (5 min)

• Teacher explains:
  “Heat flows from a warmer object to a cooler one by three ways: conduction, convection, and radiation.”
• Focus for today: Radiation – heat transfer without direct contact.

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4️⃣ Guided Experiment: Radiation & Color Absorption (20 min)

Materials:

• Desk lamps (simulating the Sun)
• Black paper sheets
• White paper sheets
• Thermometers (optional but recommended for more precise data)

Instructions:

• Students predict which surface heats faster and why, recording their hypothesis.
• Place lamps at equal distance from black and white sheets.
• After 5-7 minutes, students observe temperature changes or feel surfaces cautiously.
• Students record observations.

Teacher leads conclusion:

• “The black sheet gets hotter quicker because dark surfaces absorb more radiant energy.”
• “Radiation transfers energy through waves and does not require a medium or contact.”
• Highlight that this explains how the Sun’s energy reaches Earth through space.

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5️⃣ Structured Notes (5 min)

Students copy:

Radiation: Transfer of thermal energy through electromagnetic waves without physical contact.

Examples:

• Sun’s rays warming the Earth
• Heat from a campfire
• Heat from a lamp

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6️⃣ Practice Worksheet (10 min)

Part A – True or False

Statement	Correct Answer
Temperature is a form of energy.	False
Heat moves from cold to hot.	False
The Sun heats Earth by radiation.	True
Radiation requires contact between objects.	False

Part B – Short Answers

• Explain the difference between heat and temperature.
• Why are white roofs common in hot places?

Expected answers:

• Temperature measures energy while heat is energy that moves.
• White roofs reflect radiation and absorb less heat, keeping buildings cooler.

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7️⃣ Exit Ticket (5 min)

• Prompt: “In one sentence, explain how the Sun heats the Earth.”
• Ideal response:
  “The Sun heats the Earth by radiation, which transfers energy without needing contact.”

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Differentiation Strategies

• For diverse learners / students with dyslexia:

  • Provide a dyslexia-friendly reading sheet with large font, simple sentences, and high-contrast colours.
  • Use visuals and diagrams with minimal text.
  • Allow oral responses or paired reading for written tasks.
  • Use hands-on materials during experiments for kinaesthetic learners.

• For English Language Learners:

  • Pre-teach key vocabulary with visual supports (heat, temperature, radiation).
  • Use sentence starters for discussions and written answers.

• For students needing extra support:

  • Extra guided small group review before and after experiments.
  • Scaffold note-taking with fill-in-the-blanks templates.

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Extension Activities for Advanced Learners

• Research and present on how different colours affect heat absorption in real-world applications (e.g., clothing, buildings).
• Investigate radiation from other sources (e.g., infrared radiation) and relate to technologies like remote controls or thermal cameras.
• Model the electromagnetic spectrum with emphasis on heat radiation wavelengths.

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Materials Checklist

• Desk lamps or heat lamps (1 per group)
• Black paper (1 sheet per group)
• White paper (1 sheet per group)
• Thermometers (optional)
• Worksheet printouts
• Chart paper or whiteboard for notes and diagrams

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Notes for Teachers

• Emphasize real-world connections to student life and environment.
• Monitor group discussions to guide misconceptions.
• Encourage students to justify their predictions and observations.
• Reinforce the science vocabulary consistently using “I can…” statements.

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This lesson plan uses inquiry, experimentation, and reflective exercises to meaningfully connect students to the Alberta Science Curriculum expectations on energy transfer, especially radiation, supporting diverse learners with practical and visual scaffolds.