Heat Transfer

You left a fork in a bowl of hot water. When you got the fork, you observed that it became hotter. What do you call the heat transfer involved in the situation?

• Conduction

• Convection

• Radiation

Which of the following shows convection?

• A spoon get hot when left in bowl of hot soup.

• A grill holding a hot spoon felt her fingers becoming warm.

• The hot surface of the land heats the air above it and the air become warm.

What energy transfer is shown through direct contact of the heat source and the body receiving the heat?

• Radiation

• Convection

• Conduction

Which of these activities show heat transfer by radiation?

• Heating the wire

• Boiling of water

• Lightning the room with bulb

Which of the following DOES NOT show heat transfer?

• Placing a spoon in a cup of hot coffee

• Cutting paper in small pieces

• Boiling water in a kettle

Grade IV Pupils went campin. They lighted bonfire and they felt their face and arms were getting warm. How did the heat from the fire transfer to the pupils.

• Through radiation

• Through convection

• Through conduction

The heat transferred from one place to another by movement of fluid is called _______.

• Conduction

• Convection

• Radiation

Which is not belong to the methods of heat transfer?

• Conduction

• Reflection

• Radiation

When heat is transferred through solid materials, it is called?

• Conduction

• Reflection

• Radiation

Which of the following is an example of heat transfer by conduction?

• Sunbathing during summer

• An ice cream melts on table

• Hand near a flame feels hot