Question

Which is an example of radiation?

Troy’s hand is burned when he touches hot wax.
Earth is heated by energy from the Sun.
A hot dog is held over a fire and gets warm.
Water is boiled in a pot on a stove burner.

Answer 1

Answer:

Examples of Radiation

A burning candle emits radiation in the form of heat and light. The Sun emits radiation in the form of light, heat, and particles. Uranium-238 decaying into Thorium-234 emits radiation in the form of alpha particles.

Answer 2

Answer: The 2nd choice

Explanation: In the case of Troy's hand is burned when he touches hot wax, it is an example of conduction as heat is transferred through direct contact with the hot object. In the case of water boiled in a pot and heating of hot dogs over the fire, the mechanism of heat transfer is through convection.

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