Class 7 Physics Lesson Plan - Chapter 5: Heat
Class 7 Physics Lesson Plan
Chapter 5: Heat
Subtopics
- Heat – A Form of Energy and its Units (Calorie (cal) and Joule (J))
- Different Units of Temperature (°C, °F, K)
- Effects of Heat
- Methods of Heat Transfer (Conduction, Convection, Radiation)
- Thermos Flask (Application of Heat Transfer)
- Appearance of the Colour of an Object (Based on Absorption and Reflection)
Learning Objectives
- Understand heat as a form of energy and its measurement in different units.
- Differentiate between °C, °F, and Kelvin temperature scales.
- Analyze the effects of heat on materials and living beings.
- Explain the three methods of heat transfer and their applications.
- Describe how a thermos flask minimizes heat transfer.
- Understand how heat affects the appearance of object colors based on absorption and reflection.
Procedure
- Introduce heat as a form of energy with real-life examples.
- Explain the units of heat (calorie and joule) and temperature scales with conversions.
- Discuss the effects of heat, such as expansion, change of state, and temperature rise.
- Demonstrate conduction, convection, and radiation using simple experiments.
- Show how a thermos flask prevents heat loss using insulation principles.
- Explain how objects appear in different colors based on heat absorption and reflection.
Activities
- Experiment: Measure the temperature of water before and after heating.
- Practical: Demonstrate heat transfer using a metal rod, hot air balloon, and infrared lamp.
- Discussion: Observe why black objects heat up faster than white ones.
- Observation: Compare the working of a thermos flask and an open container.
Skill/Values
- Scientific observation and reasoning.
- Analytical thinking and problem-solving.
- Application of physics in daily life.
- Understanding of energy conservation and heat management.
Assessment
- Class discussion and Q&A sessions.
- Worksheet on heat transfer methods and temperature conversions.
- Practical experiment reports.
- Quiz on effects of heat and applications in daily life.
