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

Give two uses of convection currents.

Ans 1: i. Convention current set up by electric, gas or coal heaters help to warm our homes and offices. ii. Land and sea breeze are also cause by convection currents.

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

Set 1

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Set 2

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Set 3

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Set 4

10 Questions
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Set 5

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Set 6

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Set 7

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Set 8

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Set 9

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

Question # 1

Give two uses of convection currents.

Ans 1: i. Convention current set up by electric, gas or coal heaters help to warm our homes and offices. ii. Land and sea breeze are also cause by convection currents.

Submit

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

Question # 1

How many sides of a Leslie cube are

Ans 1: A shining silvered surface,A dull black surface, A while surface, A coloured surface

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

Question # 1

How does heat reaches us from the sun

Ans 1: Our sun is the major source of heat energy It reaches us neither by conduction nor by convection because the space between the sun and the Earths atmosphere is travels from one place to another place It is through radiation that heat reaches us from the Sun.

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

Question # 1

Define rate of flow of heat

Ans 1: The amount of heat that flow in unit time is called rate of flow heat
Ans 2: Unit: Its unit is js

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

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 6

Question # 1

How gliders stay in air for a long period

Ans 1: Gliders use upward movement of hot air. The rising convection currents are called thermal Glider ride over these thermals. The upward movement of air currents in thermals help them to stay in air for a long time

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

Question # 1

Write any two uses of conductors

Ans 1: Good Conductors are used when quick transfer of heat is required through a body Cookers, cooking plates, boiler, radiators and condensers of refrigerator etc, are made of metals such as aluminum and copper for the better conduction
Metal boxes are used for makijg ice and ice cream etc

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

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.

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

Question # 1

For what purpose good conductors are used

Ans 1: Good conductors are used for quick transfer of heat Thus cookers, cooking plates, boiler, radiators and condensers of refrigerators etc. are made of metal.

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9th class Physics Chapter 9 (English Medium)

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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

Give two uses of convection currents.

Define thermals

Define thermals.

What are the actors on which rate of emission of radiation depends

Why Styrofoam boxes are used to keep food hot or ice cream for a long time.

Transfer of Heat.

On which factors does rate of heat flow depends upon

Define rate of flow of heat

Describe relation of radiation of heat and surface area

Explain the impacted of treehouse effect in global warming

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

Give two uses of convection currents.

Define thermals

Define thermals.

What are the actors on which rate of emission of radiation depends

Why Styrofoam boxes are used to keep food hot or ice cream for a long time.

Transfer of Heat.

On which factors does rate of heat flow depends upon

Define rate of flow of heat

Describe relation of radiation of heat and surface area

Explain the impacted of treehouse effect in global warming

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

How many sides of a Leslie cube are

Why conduction of heat does no takes place in gases

Which surface is good absorber and which is poor absorber of heat

What is meant by convection currents

Why metals are good conductors of heat

Why transfer of heat in fluids takes place by convection?

For what purpose double glazed windows are used.

Define thermal conductivity.

Why bottom of cooking pots are made black?

Give two uses of convection currents.

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

How does heat reaches us from the sun

What is green house effect

What is radiation?

For what purpose double glazed windows are used.

Define rate of flow of heat

Described an experiment of convection.

What is the proportionality constant of thermal conductivity

Why bottoms of cooking pots are made black

Differentiate between conductors and insulator

Why are the metals good conductors of heat

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

Define rate of flow of heat

On which factors does rate of heat flow depends upon?

How many sides of a Leslie cube are

Describe relation of radiation of heat and surface area

How does heat reaches us from the sun

Define the of flow of heat and write its mathematical form.

Define rate of flow of heat?

For what purpose good conductors are used

We wear whit and light coloured clothes in summer why

Explain why

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

Where is convection currents used

Described an experiment of convection.

What is the effect of length of the solid on thermal conductivity