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 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.
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 metal rod is heated at one end. After some time, the other end also becomes hot. This is an example of __________.
A person stands near a campfire and feels warm. Which method of heat transfer is mainly responsible for this?
Which of the following is an example of heat transfer by radiation?
(1) Touching a hot pan
(2) Feeling the warmth of the sun
(3) Boiling water
(4) Using a fan
Which of the following is NOT a good conductor of heat?
(1) Iron
(2) Glass
(3) Silver
(4) Copper
Which of the following is NOT a method of heat transfer?
(1) Conduction
(2) Radiation
(3) Reflection
(4) Convection
Which of the following is the best example of convection?
(1) Heating a metal rod
(2) Boiling water in a pot
(3) Sunlight warming your face
(4) Ironing clothes
A metal rod is heated at one end. After some time, the other end also becomes hot. This is an example of __________.
Fill in the blank: The handle of a cooking pot is often made of __________ to prevent heat transfer to your hand.
Fill in the blank: The process by which heat is transferred from the bottom to the top of a liquid is called __________.
Fill in the blank: The process of heat transfer in fluids due to the movement of the fluid itself is called __________.
True or False: Air is a good conductor of heat.
True or False: All objects emit some form of radiation.
True or False: Convection can occur in solids.
True or False: Heat always flows from a colder object to a hotter object.
