Heat and Temperature: Meaning, Differences Between Heat and Temperature, Types, Units, Symbols and Conversion Between Degree Celsius and Fahrenheit Primary 5 (Basic 5) Second Term Week 6 Basic Science and Technology

HEAT AND TEMPERATURE: MEANING, DIFFERENCES BETWEEN HEAT AND TEMPERATURE, TYPES, UNITS, SYMBOLS AND CONVERSION BETWEEN DEGREE CELSIUS AND FAHRENHEIT PRIMARY 5 (BASIC 5) SECOND TERM WEEK 6 BASIC SCIENCE AND TECHNOLOGY

BASIC SCIENCE AND TECHNOLOGY

SECOND TERM

WEEK 6

PRIMARY 5 (BASIC 5) 

THEME – YOU AND ENERGY 

PREVIOUS LESSON – Heat and Energy: Meaning of Energy, Forms of Energy, Energy Conversion and Importance of Energy Conversion Primary 5 (Basic 5) Second Term Week 5 Basic Science and Technology

TOPIC – TEMPERATURE 

LEARNING AREA

1. Introduction

2. Meaning and Examples of Heat and Temperature

3. Difference Between Heat and Temperature

4. Types of Temperature Scales

5. Units and Symbols of Heat and Temperature

6. Conversion Between Celsius and Fahrenheit

7. Weekly Assessment: Test Questions and Answers

8. Summary

LEARNING OBJECTIVES 

By the end of the lesson, pupils should be able to:

1. Define heat and temperature.

2. State the differences between heat and temperature.

3. Mention the types of temperature scales.

4. Identify the units and symbols of heat and temperature.

5. Convert temperature from degree Celsius to Fahrenheit and vice versa.

ENTRY BEHAVIOUR

Pupils have previously learned about energy and its forms, especially heat energy, and how energy is used in everyday life.

This lesson builds on that knowledge by helping pupils understand that heat is a form of energy and temperature is the measurement of how hot or cold a body is, and how both are related in daily life activities.

INSTRUCTIONAL MATERIALS

The teacher will teach the lesson with the aid of:

1. Thermometer

2. Candle

3. Chart showing temperature scales

5. Electric bulb

4. Ice block

5. Blackboard/whiteboard

METHOD OF TEACHING

Choose a suitable and appropriate methods for the lessons.

Note – Irrespective of choosing methods of teaching, always introduce an activities that will arouse pupil’s interest or lead them to the lessons. 

REFERENCE MATERIALS

1. Scheme of Work

2. 9 – Years Basic Education Curriculum

3. Course Book

4. All Relevant Material

5. Online Information

CONTENT OF THE LESSON

INTRODUCTION

Every day, we experience hot and cold conditions in our environment such as hot water, cold drinks, sunlight, and weather changes. These experiences are related to heat and temperature.

Heat and temperature are very important in our daily life because they help us understand how hot or cold a body is and how heat moves from one object to another.

In this lesson, pupils will learn about the meaning of heat and temperature, differences between heat and temperature, types of temperature scales, units, symbols, and conversion between degree Celsius and Fahrenheit.

LESSON 1 – MEANING OF HEAT

Heat is a form of energy that flows from a hotter object to a colder object. It is what makes things warm or hot.

Examples of Heat

1. Heat from the sun warming the earth

2. Heat from fire used for cooking

3. Heat from an electric iron

4. Heat from boiling water

5. Heat produced when rubbing hands together (friction)

Heat is energy that produces warmth and moves from a hot body to a cold body. It is very useful in cooking, warming, and other daily activities.

MEANING OF TEMPERATURE

Temperature is the degree of hotness or coldness of a body. It tells us how hot or cold something is.

Examples of Temperature

1. The hot temperature of boiling water

2. The cold temperature of ice

3. Body temperature when measured with a thermometer

4. Weather temperature during hot sunny days

5. Room temperature in a classroom

Temperature is a measure of how hot or cold a body is. It can be measured using a thermometer and is usually expressed in degrees Celsius (°C) or Fahrenheit (°F).

DIFFERENCES BETWEEN HEAT AND TEMPERATURE

1. Heat is a form of energy, while Temperature is the degree of hotness or coldness.

2. Heat flows from a hotter body to a colder body, while Temperature is measured using a thermometer.

3. Heat depends on the amount of substance, while Temperature does not depend on the amount.

4. Heat is measured in Joules (J), while temperature is measured in Degree Celsius (°C) or Fahrenheit (°F).

LESSON 2 – TYPES OF TEMPERATURE SCALES

1. Celsius Scale (°C)

This is the temperature scale commonly used in many countries.

• Water freezes at 0°C

• Water boils at 100°C

Example: Room temperature is about 25°C

2. Fahrenheit Scale (°F)

This is the temperature scale commonly used in the United States.

• Water freezes at 32°F

• Water boils at 212°F

Example: Normal body temperature is 98.6°F

There are two main types of temperature scales: Celsius (°C) and Fahrenheit (°F). They are used to measure how hot or cold a body is in different parts of the world.

UNITS AND SYMBOLS OF HEAT AND TEMPERATURE

1. Heat

• Unit: Joule

• Symbol: J

Example: Heat energy used in cooking is measured in Joules (J).

2. Temperature

• Units: Degree Celsius and Degree Fahrenheit

• Symbols: °C and °F

Example:

• 30°C means 30 degrees Celsius

• 86°F means 86 degrees Fahrenheit

3. Instrument Used

Thermometer is used to measure temperature.

Heat is measured in Joules (J), while temperature is measured in degree Celsius (°C) or degree F ahrenheit (°F).

LESSON 3 – CONVERSION BETWEEN CELSIUS AND FAHRENHEIT

Conversion between Celsius and Fahrenheit means changing a temperature value from degree Celsius (°C) to degree Fahrenheit (°F) or from Fahrenheit to Celsius.

Formulas

• To convert Celsius to Fahrenheit: °F = (°C × 9/5) + 32

• To convert Fahrenheit to Celsius: °C = (°F − 32) × 5/9

Working Examples

1. Convert 0°C to °F

• °F = (0 × 9/5) + 32 = 32°F

2. Convert 100°C to °F

• °F = (100 × 9/5) + 32 = 212°F

3. Convert 68°F to °C

• °C = (68 − 32) × 5/9 = 36 × 5/9 = 20°C

Temperature can be changed from Celsius to Fahrenheit and from Fahrenheit to Celsius using simple formulas. This helps us understand temperature in different units used around the world.

WEEKLY ASSESSMENT: TEST QUESTIONS AND ANSWERS/ASSIGNMENT

A. Answer the Following Questions

1. Define heat.

2. Define temperature.

3. State two differences between heat and temperature.

4. Mention two temperature scales.

5. What instrument is used to measure temperature?

B. Fill in the Blanks

6. Heat is measured in __________.

7. Temperature is measured in __________ and __________.

8. Celsius is written as __________.

9. Fahrenheit is written as __________.

10. A __________ is used to measure temperature.

C. True or False

11. Heat is a form of energy. ______

12. Temperature shows how heavy a body is. ______

13. Water boils at 100°C. ______

14. The symbol for Celsius is °C. ______

15. A thermometer is used to measure temperature. ______

D. Simple Conversion

16. Convert 0°C to Fahrenheit.

17. Convert 100°C to Fahrenheit.

18. Convert 32°F to Celsius.

19. Convert 68°F to Celsius.

20. Convert 25°C to Fahrenheit.

ANSWER KEYS

1. Heat is a form of energy that flows from hot to cold.

2. Temperature is the degree of hotness or coldness of a body.

3. Any two correct differences.

4. Celsius and Fahrenheit

5. Thermometer

6. Joule

7. Celsius; Fahrenheit

8. °C

9. °F

10. Thermometer

11. True

12. False

13. True

14. True

15. True

16. 32°F

17. 212°F

18. 0°C

19. 20°C

20. 77°F

SUMMARY

In this lesson, pupils learned that heat is a form of energy that flows from a hotter body to a colder body, while temperature is the degree of hotness or coldness of a body.

They also learned the differences between heat and temperature, such as heat being a form of energy measured in Joules, while temperature is measured in degrees Celsius (°C) or Fahrenheit (°F) using a thermometer.

Pupils were introduced to the types of temperature scales, which are Celsius and Fahrenheit, as well as the units and symbols used in measuring heat and temperature.

Finally, pupils learned how to convert temperature between Celsius and Fahrenheit using simple formulas, and saw examples of such conversions.

PRESENTATION

To deliver the lesson, the teacher adopts the following steps:

1. The teacher asks pupils to mention things that make them feel hot or cold.

Pupils’ Activities: Pupils respond (e.g., sun, ice, fire).

2. The teacher introduces the topic: Heat and Temperature.

Pupils’ Activities: Pupils repeat the topic.

3. The teacher explains the meaning of heat.

Pupils’ Activities: Pupils listen and give examples of heat sources.

4. The teacher explains the meaning of temperature.

Pupils’ Activities: Pupils identify how temperature is measured.

5. The teacher shows a thermometer and explains its use.

Pupils’ Activities: Pupils observe and ask questions.

6. The teacher explains the differences between heat and temperature.

Pupils’ Activities: Pupils compare heat and temperature.

7. The teacher explains types of temperature scales (Celsius and Fahrenheit).

Pupils’ Activities: Pupils identify the scales.

8. The teacher teaches conversion between °C and °F using formulas and examples.

Pupils’ Activities: Pupils solve simple conversion problems.

9. The teacher gives oral questions on the lesson.

Pupils’ Activities: Pupils respond actively.

10. The teacher summarizes the lesson and corrects pupils where necessary.

Pupils’ Activities: Pupils participate in discussion.

CONCLUSION

To conclude the lesson for the week, the teacher revises the entire lesson and links it to the following week’s lesson.

NEXT LESSON

Matter: Meaning, Identification and Classification of Matter, and Atoms as the Fundamental Building Blocks of Matter Primary 5 (Basic 5) Second Term Week 8 Basic Science and Technology

LESSON EVALUATION 

Teacher asks pupils,

1. What is heat?

2. What is temperature?

3. State three differences between heat and temperature.

4. Mention two types of temperature scales.

5. What instrument is used to measure temperature?

6. State the unit of heat.

7. Write the symbols for Celsius and Fahrenheit.

8. Convert 0°C to Fahrenheit.

9. Convert 100°C to Fahrenheit.

10. Convert 68°F to Celsius.