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Test: Temperature & Heat - Class 7 MCQ


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20 Questions MCQ Test Class 7 Oxford Science: Chapter Notes, Worksheets & Tests - Test: Temperature & Heat

Test: Temperature & Heat for Class 7 2024 is part of Class 7 Oxford Science: Chapter Notes, Worksheets & Tests preparation. The Test: Temperature & Heat questions and answers have been prepared according to the Class 7 exam syllabus.The Test: Temperature & Heat MCQs are made for Class 7 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Temperature & Heat below.
Solutions of Test: Temperature & Heat questions in English are available as part of our Class 7 Oxford Science: Chapter Notes, Worksheets & Tests for Class 7 & Test: Temperature & Heat solutions in Hindi for Class 7 Oxford Science: Chapter Notes, Worksheets & Tests course. Download more important topics, notes, lectures and mock test series for Class 7 Exam by signing up for free. Attempt Test: Temperature & Heat | 20 questions in 20 minutes | Mock test for Class 7 preparation | Free important questions MCQ to study Class 7 Oxford Science: Chapter Notes, Worksheets & Tests for Class 7 Exam | Download free PDF with solutions
Test: Temperature & Heat - Question 1

Which of the following is NOT a temperature scale?

Detailed Solution for Test: Temperature & Heat - Question 1

Celsius, Fahrenheit, and Kelvin are all temperature scales, while Newton is not.

Test: Temperature & Heat - Question 2

Which temperature scale is commonly used in scientific measurements?

Detailed Solution for Test: Temperature & Heat - Question 2

Kelvin is commonly used in scientific measurements because it is an absolute temperature scale.

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Test: Temperature & Heat - Question 3

Which type of thermometer works by using the expansion of a liquid?

Detailed Solution for Test: Temperature & Heat - Question 3

Mercury thermometers work by using the expansion of mercury in a glass tube to measure temperature.

Test: Temperature & Heat - Question 4

What is the freezing point of water in Celsius?

Detailed Solution for Test: Temperature & Heat - Question 4

The freezing point of water is 0°C on the Celsius scale.

Test: Temperature & Heat - Question 5

Which mode of heat transfer does not require a medium for transfer?

Detailed Solution for Test: Temperature & Heat - Question 5

Radiation is the transfer of heat through electromagnetic waves and does not require a medium for transfer.

Test: Temperature & Heat - Question 6

Which type of heat transfer occurs in fluids and gases?

Detailed Solution for Test: Temperature & Heat - Question 6

Convection is the transfer of heat by the movement of fluids or gases.

Test: Temperature & Heat - Question 7

Which type of heat transfer occurs when two objects are in contact with each other?

Detailed Solution for Test: Temperature & Heat - Question 7

Conduction is the transfer of heat through a material or between materials that are in contact with each other.

Test: Temperature & Heat - Question 8

Which type of heat transfer occurs when heat is transferred by touching a hot object?

Detailed Solution for Test: Temperature & Heat - Question 8

When heat is transferred by touching a hot object, it is transferred through conduction.

Test: Temperature & Heat - Question 9

Which type of heat transfer occurs when warm air rises and cool air sinks?

Detailed Solution for Test: Temperature & Heat - Question 9

When warm air rises and cool air sinks, it is transferred through convection.

Test: Temperature & Heat - Question 10

Which type of heat transfer occurs when heat is transferred through a vacuum?

Detailed Solution for Test: Temperature & Heat - Question 10

Heat can be transferred through a vacuum through radiation.

Test: Temperature & Heat - Question 11

hich material is a good conductor of heat?

Detailed Solution for Test: Temperature & Heat - Question 11

Metals are good conductors of heat because they have free electrons that can transfer energy quickly.

Test: Temperature & Heat - Question 12

Which material is a good insulator of heat?

Detailed Solution for Test: Temperature & Heat - Question 12
  • Structure: Wood has a porous structure with many air pockets, which trap air. Air is a poor conductor of heat, making it effective at preventing heat transfer.

  • Low Thermal Conductivity: The thermal conductivity of wood is low compared to metals, meaning it does not allow heat to pass through easily. This quality makes wood useful for thermal insulation in buildings and furniture.

  • Natural Material: As a natural material, wood can also help in maintaining comfortable temperatures in homes, keeping them warm in winter and cool in summer.

Test: Temperature & Heat - Question 13

What is the SI unit of heat?

Detailed Solution for Test: Temperature & Heat - Question 13

The SI unit of heat is the joule.

Test: Temperature & Heat - Question 14

Which type of heat transfer occurs when heat is transferred through a solid?

Detailed Solution for Test: Temperature & Heat - Question 14

When heat is transferred through a solid, it is transferred through conduction.

Test: Temperature & Heat - Question 15

What is the boiling point of water in Celsius?

Detailed Solution for Test: Temperature & Heat - Question 15

The boiling point of water is 100°C on the Celsius scale.

Test: Temperature & Heat - Question 16

Which type of heat transfer occurs when heat is transferred through a liquid or gas?

Detailed Solution for Test: Temperature & Heat - Question 16

When heat is transferred through a liquid or gas, it is transferred through convection.

Test: Temperature & Heat - Question 17

Which type of heat transfer occurs when heat is transferred by electromagnetic waves?

Detailed Solution for Test: Temperature & Heat - Question 17

When heat is transferred by electromagnetic waves, it is transferred through radiation.

Test: Temperature & Heat - Question 18

What is the formula for calculating heat energy?

Detailed Solution for Test: Temperature & Heat - Question 18

The formula for calculating heat energy is Q = m × c × ΔT, where Q is the heat energy, m is the mass of the substance, c is the specific heat capacity of the substance, and ΔT is the change in temperature.

Test: Temperature & Heat - Question 19

Which type of heat transfer occurs when heat is transferred through a material by the movement of electrons?

Detailed Solution for Test: Temperature & Heat - Question 19

When heat is transferred through a material by the movement of electrons, it is transferred through conduction.

Test: Temperature & Heat - Question 20

How can heat loss be prevented?

Detailed Solution for Test: Temperature & Heat - Question 20

Heat loss can be prevented by using insulation, wearing warm clothing, and closing windows and doors.

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