Heat radiation examples

This Leslie cube contains hot water. Which side has the highest reading on the radiation thermometer?

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This Leslie cube contains hot water. Which side has the lowest reading on the radiation thermometer?

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These covered thermometers were left out in the sun. Which thermometer will have the highest reading?

These covered thermometers were left out in the sun. Which thermometer will have the lowest reading?

These flasks contain ice. They were put in the sun. Label the results.

a

b

ice melts fastest

Ice melts slowest

Tap water was put inside these containers in the sun. Add the labels to show what would happen

a

b

tap water heats slower

tap water heats fastest

Why are these firefighters wearing silver suits ?

• to absorb heat radiation

• to reflect heat radiation

This device heats water using the heat from the sun.

Why is this solar water heater coloured black?

• to absorb more radiation

• to reflect more radiation

The wax will melt first on the ....

• silver metal plate

• black metal plate

The temperature rises faster on the thermometer covered with ....

• silver foil

• black paper