Heat Transfer Methods
Physics ⇒ Heat and Thermodynamics
Heat Transfer Methods starts at 7 and continues till grade 12.
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See sample questions for grade 8
A black car and a white car are parked in the sun. Which car will heat up faster and why?
A hot air balloon rises because the air inside it is heated. Which method of heat transfer causes the balloon to rise?
A person stands near a campfire and feels warm. Which method of heat transfer is mainly responsible for this?
A student wraps a hot cup of tea with a thick cloth. What is the main purpose of the cloth?
Describe how convection currents are formed in a liquid.
Describe how heat is transferred from the Sun to the Earth.
Describe the direction of heat flow between two objects at different temperatures.
Explain why a metal bench feels colder than a wooden bench on a cold day, even though both are at the same temperature.
Explain why a vacuum flask keeps liquids hot or cold for a long time.
Explain why double-glazed windows help keep houses warm in winter.
Explain why wearing white clothes in summer keeps you cooler than wearing black clothes.
When you place a metal spoon in a hot cup of tea, the spoon becomes warm. Which method of heat transfer is responsible for this?
Which method of heat transfer does NOT require a medium?
Which method of heat transfer is mainly responsible for the heating of water at the bottom of a pot on a stove?
Which method of heat transfer is responsible for the movement of warm air rising and cool air sinking in a room?
Which method of heat transfer is responsible for the warming of your hands when you hold them near, but not touching, a heater?
Which method of heat transfer is used in a microwave oven?
A metal pan is placed on a stove, and after a few minutes, the handle becomes hot even though it is not directly above the flame. Which method of heat transfer is responsible for heating the handle?
A metal spoon and a plastic spoon are placed in a pot of hot soup. After 5 minutes, the metal spoon feels much hotter than the plastic spoon. Explain why this happens in terms of heat transfer methods.
A room is being heated by a radiator placed near the floor. Explain how all three methods of heat transfer (conduction, convection, and radiation) are involved in warming the room.
