9th Class English Medium Physics Chapter 9 Transfer of Heat Short Questions With Answers

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Online Short Questions For Chapter 9 "9th Class Physics English Medium Chapter 9 Preparation "

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Physics (New Book) - 9th Class Physics English Medium Chapter 9 Preparation

Question # 1

In what factors flow of heat depends upon for solids

Ans 1: In rate of heat flow depends upon
Area of cross section of solids
Length of solid
Difference of temperature between ends of solids.

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Prepare Complete Set Wise Questions For Chapter 9 "9th Class Physics English Medium Chapter 9 Preparation "

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Set 3

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Set 4

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Set 5

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Set 7

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Set 9

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9th Class Physics English Medium Chapter 9 Preparation - Set 1

Question # 1

In what factors flow of heat depends upon for solids

Ans 1: In rate of heat flow depends upon
Area of cross section of solids
Length of solid
Difference of temperature between ends of solids.

Submit

9th Class Physics English Medium Chapter 9 Preparation - Set 2

Question # 1

What is meant by transfer of heat

Ans 1: Transfer of heat: Thermal energy from a hot body flows to a cold body in the form of heat This is called as transfer of heat Transfer of heat is a natural process
Method of heat transfer
Conduction, Convection, Radiation

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9th Class Physics English Medium Chapter 9 Preparation - Set 3

Question # 1

Where is convection currents used

Ans 1: Uses of convection currents: Convection currents set up by electric, gas or coal heaters help to warm our homes and offices.
Central heating systems in buildings work on the same principle by convection,.
The day-to-day temperature changes in the atmosphere result from the circulation of warm or cold air that travels across the region
Land and sea breeze are also the examples of convection current

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9th Class Physics English Medium Chapter 9 Preparation - Set 4

Question # 1

Why bottoms of cooking pots are made black

Ans 1: The bottoms of cooking pots are made black because the capacity to absorb heat is enhance through it A black or rough surface absorbs more heat as compare to a white or polished surface

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9th Class Physics English Medium Chapter 9 Preparation - Set 5

Question # 1

Write any twoi factor on which rate of flow of heat depends

Ans 1: Rate of flow of heat: The amount of heat that flows in unit time is called rate of flow of heat
Ans 2: Formula: rate of flow of heat
Depending factors
Cross sectional area of the solid (a)
Length of the solid (L)
Temperature difference between ends

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9th Class Physics English Medium Chapter 9 Preparation - Set 6

Question # 1

What is greenhouse effect

Ans 1: When heat energy reflects from the earth surface, rays with shorter wavelength reflect back toward Sun but before all this radiation cn escape to outer space, greenhouse gases in the atmosphere absorb some of it which makes the atmosphere warmer and Earth surface also warmer This is called greenhouse effect

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9th Class Physics English Medium Chapter 9 Preparation - Set 7

Question # 1

Where is convection currents used

Ans 1: Uses of convection currents: Convection currents set up by electric, gas or coal heaters help to warm our homes and offices.
Central heating systems in buildings work on the same principle by convection,.
The day-to-day temperature changes in the atmosphere result from the circulation of warm or cold air that travels across the region
Land and sea breeze are also the examples of convection current

Submit

9th Class Physics English Medium Chapter 9 Preparation - Set 8

Question # 1

Write the name some bad conductors.

Ans 1: Materials which trap air is wool, felt, feathers, polystyrene, fiber, glass are bad conductors.

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9th Class Physics English Medium Chapter 9 Preparation - Set 9

Question # 1

Write name of two expert Thermal riders

Ans 1: The birds stretch out their wings and circle in there thermals. The upward movement of air helps birds to climb up with it Eagles, hawks and vultures are expert thermal climbers.

Submit

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Matric Part 1/9th Class Physics Chapter 9 Short Question Test With Answer for Unit 9 Transfer of Heat

9th Class English Medium Subjects

9th Class Urdu Medium Subjects

Online Short Questions For Chapter 9 "9th Class Physics English Medium Chapter 9 Preparation "

Physics (New Book) - 9th Class Physics English Medium Chapter 9 Preparation

In what factors flow of heat depends upon for solids

Why conduction of heat does not take place in gases

Why metal are good conductors of heat?

Define convection

Differentiate between conductors and insulator

Define rate of flow of heat

Write name of two expert Thermal riders

What is meant by conduction

Write any two measures to save energy

Why heat does not reach us by convection from a fire place

Prepare Complete Set Wise Questions For Chapter 9 "9th Class Physics English Medium Chapter 9 Preparation "

Set 1

Set 2

Set 3

Set 4

Set 5

Set 6

Set 7

Set 8

Set 9

9th Class Physics English Medium Chapter 9 Preparation - Set 1

In what factors flow of heat depends upon for solids

Why conduction of heat does not take place in gases

Why metal are good conductors of heat?

Define convection

Differentiate between conductors and insulator

Define rate of flow of heat

Write name of two expert Thermal riders

What is meant by conduction

Write any two measures to save energy

Why heat does not reach us by convection from a fire place

9th Class Physics English Medium Chapter 9 Preparation - Set 2

What is meant by transfer of heat

Write name of two expert Thermal riders

What measures do you suggest to conserve energy in houses

Write any two measures to save energy

Write the ways by which transfer of heat takes place

Define rate of flow of heat?

Why transfer of heat in fluids takes place by convection?

We wear whit and light coloured clothes in summer why

In a thermos flask, how heat is prevented to enter or leave the flask

Write two consequences of radiations

9th Class Physics English Medium Chapter 9 Preparation - Set 3

Where is convection currents used

Why are the metals good conductors of heat

Describe relation of radiation of heat and surface area

Define thermal conductivity.

Transfer of Heat.

Define convection.

Why metal are good conductors of heat?

What is meant by transfer of heat

We wear whit and light coloured clothes in summer why

Write two examples of good and bad conductors each

9th Class Physics English Medium Chapter 9 Preparation - Set 4

Why bottoms of cooking pots are made black

What happen when burner remove under beaker

Described an experiment of convection.

Define convection

Why is scientific reason to wear white and light coloured clothes in summer

What is meant by convection current

Explain the impacted of treehouse effect in global warming

What is green house effect

What is radiation

In a thermos flask, how heat is prevented to enter or leave the flask

9th Class Physics English Medium Chapter 9 Preparation - Set 5

Write any twoi factor on which rate of flow of heat depends

Define sea breeze, how it is cause?

What is radiation?