Conduction, Convection, & Radiation Quiz

Louisa put a bowl of water and a bowl of sand in the sun. She put a thermometer in each bowl. Then she recorded the temperature at the start and after 30 minutes. After 30 minutes, the sand had heated more than the water.

• sunlight does pass through water.

• sunlight heats liquids more than solids

• different materials heat up at different rates.

• different materials absorb the same amount of heat.

What type of heat transfer is used to fry an egg in a pan and how can you tell?

• It is conduction because the egg does not cook.

• It is conduction because the egg is touching the pan.

• It is convection because you put oil in a frying pan to cook in it.

• It is convection because you can feel the heat a few inches away from the pan.

Most of the energy needed for all the processes on earth comes directly or indirectly from the sun. There is no medium or material connecting the sun to the earth. Therefore, the only type of heat transfer possible to transfer energy from the sun to the earth is

• condensation.

• conduction.

• convection.

• radiation

Conduction occurs more easily between solids and liquids. This is because the particles in gases are

• farther apart and move faster.

• closer together and move faster.

• further apart and move more slowly.

• closer together and move more slowly.

Emily made a cup of tea and stirred it with a spoon. The spoon became warm, How was the heat from the tea transferred to the spoon?

• Convection

• Radiation

• Convection

• evaporation

A student wants to lower the temperature of a metal coin. Which action would make the coin the coldest?

• Placing the coin in a freezer

• Leaving the coin on a counter

• Placing the coin in cool water

• Rubbing the coin with cold hands

A hot rock is dropped into a pail of cool water. Heat energy transferred from the rock to the water by

• Boiling

• Radiation

• Convection

• Conduction

What is the original source of most of the energy that people use?

• Energy that reaches Earth by radiation from the sun.

• Energy that reaches the earth by radiation from the core.

• Energy that reaches the earth by convection from the sun.

• Energy that reaches the earth by conduction from the core.

What heat transfer happens when you burn your hand by touching a fire?

• Radiation

• Convection

• Conduction

• Transpiration

What is the definition of CONVECTION?

• When heat transfers through waves.

• When heat transfers from objects that are touching.

• Heat traveling from the sun

• movement in a gas or liquid in which the warmer parts move up and the colder parts move down