Transmission Of Light Short Question With Answer: General Science Cadet College Test
[toggle title=”Q.No.01: What is thermal energy?” state=”close”] Ans: Thermal energy is the energy made by moving particles in matter. [/toggle]
[toggle title=”Q.No.02: What is the difference between heat and thermal energy?” state=”close”] Ans: Thermal energy moves from one object to another.
Heat moves from a hot object to a cooler object.[/toggle]
[toggle title=”Q.No.03: What is transmission of energy?” state=”close”] Ans: It is the transfer of heat from one object to another. [/toggle]
[toggle title=”Q.No.04: What is conduction?” state=”close”] Ans: Conduction is the transfer of heat through a material without moving the particles. [/toggle]
[toggle title=”Q.No.05: What is the difference between good and bad conductors?” state=”close”] Ans: Good conductors let heat pass easily (e.g., iron, silver).
Bad conductors do not let heat pass easily (e.g., glass, cork).[/toggle]
[toggle title=”Q.No.06: Why are metals good conductors of heat?” state=”close”] Ans: Because metal particles are close together and have free electrons that help move heat quickly.[/toggle]
[toggle title=”Q.No.07: How are birds an example of heat?” state=”close”] Ans: Birds have feathers that stop heat from escaping, keeping them warm. [/toggle]
[toggle title=”Q.No.08: What is convection?” state=”close”] Ans: Convection is when particles move to the heat source, take in heat, and move away with it. [/toggle]
[toggle title=”Q.No.09: What is radiation in heat transfer?” state=”close”] Ans: Radiation is the transfer of heat through empty space without needing particles or a medium. [/toggle]
[toggle title=”Q.No.10: Give an example of heat transfer by radiation.” state=”close”] Ans: The Sun warming your face on a clear day is heat transfer by radiation. [/toggle]
[toggle title=”Q.No.11: What is thermal insulator?” state=”close”] Ans: A thermal insulator is a material that slows down or stops the flow of heat. [/toggle]
[toggle title=”Q.No.12: Name two everyday uses of thermal insulators.” state=”close”] Ans: Jackets keep people warm, and thermos flasks keep drinks hot or cold. [/toggle]
[toggle title=”Q.No.13: What happens to particles when they are heated?” state=”close”] Ans: They move faster and spread apart. [/toggle]
[toggle title=”Q.No.14: Why does hot air rise?” state=”close”] Ans: Hot air is lighter because its particles are farther apart, so it rises above cooler, heavier air. [/toggle]
[toggle title=”Q.No.15: What is an example of convection in nature?” state=”close”] Ans: Sea breezes, where warm air from the land rises and cooler air from the sea moves in. [/toggle]
[toggle title=”Q.No.16: Why does metal feel colder than wood at the same temperature?” state=”close”] Ans: Metal conducts heat away from your hand faster than wood, making it feel colder. [/toggle]
[toggle title=”Q.No.17: What is the unit of heat energy?” state=”close”] Ans: The joule (J) is the unit of heat energy. [/toggle]
[toggle title=”Q.No.18: How do double-glazed windows save energy?” state=”close”] Ans: They trap air between glass layers, reducing heat loss by conduction and convection. [/toggle]
