Heat Test

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Heat Test - 4

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Weekly Quiz Competition

Question 1
1 / -0

Heat always moves from __________ objects to ___________ objects.

A
cooler, warmer

B
warmer, cooler

C
bigger, smaller

D
smaller, bigger

Solution

The flow of heat during heat transfer is always from hotter/warmer area towards the colder area. When you keep one end of a metal rod on a burning flame, the end you are holding gets hotter by the minute. It suggests that the flow of heat is from hotter towards colder region.
Question 2
1 / -0

Heat is the transfer of _____________ between substances of different temperatures.

A
energy

B
atoms

C
molecules

D
cells

Solution

During the transfer of heat between substance the transfer of heat energy takes place. The heat energy from the hotter end travels through some medium like air, solid (metal) towards the colder end.
Question 3
1 / -0

Which of the following process is responsible for bringing heat to our planet Earth?

A
Conduction

B
Convection

C
Radiation

D
Both A and C

Solution

The heat originating from the sunlight is transferred across the universe that consist of no matter but vacuum by means of radiation. In radiation the transfer of heat requires no medium.

Thus option C is the correct answer.
Question 4
1 / -0

The materials which allow heat to pass through them easily are _______ of heat.

A
insulator

B
conductor

C
convector

D
none of the above

Solution

The materials which allow heat to pass through them easily are conductors of heat. For examples, aluminum, iron and copper. The materials which do not allow heat to pass through them easily are poor conductors of heat.
Question 5
1 / -0

Insulation is used in the walls of a building to __________.

A
trap solar energy.

B
keep thermal energy from moving through the walls.

C
conduct thermal energy.

D
keep cold air from moving through the walls.

Solution

Substance that prevent the flow of heat are considered as insulator. The walls of the buildings are insulated because they keep thermal energy from moving through the wall.

Hence, option B is the correct answer.
Question 6
1 / -0

The unit of measurement of temperature is?

A
Meter

B
Kilogram

C
Degree Celsius

D
Second

Solution

Meter is the unit of measurement of Distance.

Kilogram is the unit of measurement of Weight.

Degree Celsius is the unit of measurement of temperature.

Second is the unit of Time.

Thus, Option C is the correct answer.
Question 7
1 / -0

Normal temp. of the human body is ______________?

A
32^° C

B
37° c

C
42° C

D
45° C

E

Solution

It is the fact that the normal temperature of the human body is 37^° C.

Thus, Option B is the correct answer.
Question 8
1 / -0

A wooden spoon is dipped in a cup of ice cream.Its other end ________________ ?

A
Becomes cold by the process of conduction

B
Becomes cold by the process of convection

C
Becomes cold by the process of radiation

D
Doesn’t become cold

Solution

As we all know that wood is an insulator or bad conductor of heat. So, the other end of wooden spoon will not be affected by the dipping in a cup of ice-cream.
Question 9
1 / -0

The materials which allow heat to pass through them easily are __________ of heat?

A
Insulators

B
Conductors

C
Poor Conductors

D
None of these

Solution

Insulators: The materials which do not allow heat easily to pass through them are called Insulators. These are also known as Poor Conductor of heat.

Conductors: The materials which allows heat easily to pass through them are known as Conductors.

Thus, Option B is the correct answer.
Question 10
1 / -0

An example of a good conductor of heat is?

A
Plastic

B
Cloth

C
Wood

D
Aluminium

Solution

In the above options, Plastic, Cloth and Wood are poor conductors of heat. Whereas Aluminium is good conductor of heat because it is a metal and metal is obviously a good conductor of heat.

Due to this Property of Aluminium, It is also used in cooking utensils, Electrical equipments etc.

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Heat Test - 4

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Heat Test - 4

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SHARING IS CARING

Question 1

cooler, warmer

warmer, cooler

bigger, smaller

smaller, bigger

Solution

Question 2

energy

atoms

molecules

cells

Solution

Question 3

Conduction

Convection

Radiation

Both A and C

Solution

Question 4

insulator

conductor

convector

none of the above

Solution

Question 5

trap solar energy.

keep thermal energy from moving through the walls.

conduct thermal energy.

keep cold air from moving through the walls.

Solution

Question 6

Meter

Kilogram

Degree Celsius

Second

Solution

Question 7

32° C

37° c

42° C

45° C

Solution

Question 8

Becomes cold by the process of conduction

Becomes cold by the process of convection

Becomes cold by the process of radiation

Doesn’t become cold

Solution

Question 9

Insulators

Conductors

Poor Conductors

None of these

Solution

Question 10

Plastic

Cloth

Wood

Aluminium

Solution

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32^° C