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Physics SSS 1

TOPIC: Heat Energy, Concept of Heat and Temperature and Effects of Heat.

SUB-TOPIC: Heat Energy

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Instructional Materials: Source of hear, Tripod stand, Wire gauze, Beaker, Water, Thermometer, etc.

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Instructional Materials: Source of hear, Tripod stand, Wire gauze, Beaker, Water, Thermometer, etc.

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Behavior Objectives: At the end of the lesson, the Students should be able to; 

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Behavior Objectives: At the end of the lesson, the Students should be able to; 

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 define Heat,  define temperature of a body,  Mention at least three effect of Heat on bodies.

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Concepts of HEAT

Heat is a concept of physics that deals with the study of relative motion of fluid (liquid and gas) from one body to another. It is a form of energy that can be transferred from one body due to temperature differences.

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Temperature is the degree of hotness and coldness of a body or an object. It is a scalar quantity, measured in Kelvin.

Note: Heat and Temperature are similar but not the same.

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1. Define Heat.

2. Differentiate between heat and temperature.

3. Mention five effect of heat.

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www.google.com (click on google search, type “concept of heat”, click on search) and New School Physics pg36.

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1. Which of the following is not an effect of heat? A. expansion B. contraction

C. change of state. D. increase in weight

2. Temperature can be measured in the following units except A. degree celsius

B. kelvin C. degree Fahrenheit D. centigrade-meter

3. When heat is extracted from water it changes from liquid to gas. What is this process called....................

4. The process of by which a gas is converted to a solid is called .................

5. Fahrenheit is a unit of ...............................

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1. Differentiate between heat and temperature.

2. Mention at least three effect of heat.

3. What is the instrument used to measure Temperature?

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Watch this video in less than 2 minutes.

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Watch this video in less than 2 minutes.

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Physics - Energy - Heat Transfer - Heat and Temperature

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Differences between Heat and Temperature  

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Differences between Heat and Temperature  

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1. Heat is a measure of the total internal energy of a body while, temperature is the degree of hotness or coldness of the body.

2. Heat takes place due to temperature difference while, temperature occurs due to slight change of substance.

3. Heat is measured in joules while, temperature is measured in Kelvin / Celsius.

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When heat is applied to a body the following effect may occur

1. Expansion: when heat is applied, volumes increases while density decreases.

2. Change in temperature: When heat is added on a body, the temperature increases

3. Change of state: melting, freezing, condensation, evaporation etc.

4. Thermion emission: Addition of heat on metal may result in the emission of electron from the surface of the metal

5. Photo electric emission: The emission of electron when sufficient light of high frequency is illuminated on a metal surface e.g. zinc plate.