seanlancelot
Answered

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1. Which of the following methods of heat transfer is taking place when sunlight heats the Earth?
A. Conduction
B. Convection
C. Dispersion
D. Radiation
2. Heat transfer is the process of thermal energy exchange due to
temperature. Which of the following is TRUE about thermal radiation?
A. Heat transfer takes within the fluid.
B. Heat transfer takes place between objects by direct contact.
C. Heat transfer takes place due to the difference in temperature.
D. Heat transfer occurs through electromagnetic waves without involving particles.
3. Thermal radiation is generated when heat from the movement of charges in the material is converted to electromagnetic radiation. Which among the choices is an example of thermal radiation?
A. melting of ice
B. ironing a piece of cloth
C. heat from a boiling water
D. heat from an electric stove burner
4. When does heat transfer by radiation occur?
A. If electromagnetic radiation is felt
B. If electromagnetic radiation is emitted
C. If electromagnetic radiation is absorbed
D. If electromagnetic radiation is emitted or absorbed
5. Why do people prefer to wear white or light-colored clothes in summer and
dark-colored clothes in winter?
A. Light-colored clothes are cool, while dark-colored clothes are warm.
B. Light-colored clothes are warm, while dark-colored clothes are cool
C. Light-colored clothes are good heat absorber and good reflectors of heat while dark-colored clothes absorb less of the heat of the sun and keep our body cold.
D. Light-colored clothes are poor absorbers and good reflectors of heat while dark-colored clothes absorb most of the heat of the sun and keep our body warm.

Sagot :

johnanat4

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1. Which of the following methods of heat transfer is taking place when sunlight heats the Earth?

A. Conduction

B. Convection

C. Dispersion

D. Radiation

2. Heat transfer is the process of thermal energy exchange due to

temperature. Which of the following is TRUE about thermal radiation?

A. Heat transfer takes within the fluid.

B. Heat transfer takes place between objects by direct contact.

C. Heat transfer takes place due to the difference in temperature.

D. Heat transfer occurs through electromagnetic waves without involving particles.

3. Thermal radiation is generated when heat from the movement of charges in the material is converted to electromagnetic radiation. Which among the choices is an example of thermal radiation?

A. melting of ice

B. ironing a piece of cloth

C. heat from a boiling water

D. heat from an electric stove burner

4. When does heat transfer by radiation occur?

A. If electromagnetic radiation is felt

B. If electromagnetic radiation is emitted

C. If electromagnetic radiation is absorbed

D. If electromagnetic radiation is emitted or absorbed

5. Why do people prefer to wear white or light-colored clothes in summer and

dark-colored clothes in winter?

A. Light-colored clothes are cool, while dark-colored clothes are warm.

B. Light-colored clothes are warm, while dark-colored clothes are cool

C. Light-colored clothes are good heat absorber and good reflectors of heat while dark-colored clothes absorb less of the heat of the sun and keep our body cold.

D. Light-colored clothes are poor absorbers and good reflectors of heat while dark-colored clothes absorb most of the heat of the sun and keep our body warm.

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