The student wrote the hypothesis:‘Surface colour of the flask affects the amount of infraredabsorbed when the heater is switched on for five minutes.’Describe how the equipment in Figure 2 could be used to test this hypothesis

Design an investigation to explore how the colour of a surface affect the heat radiated by it. In your report you should include: A research questionA suitable hypothesisVariable manipulationMaterial and method

Describe what happens when the flask is heated up and then allowed to cool slowly.

The image below shows a write-up of an experiment on heat transfer. What was kept the same towards the END of the experiment to make it a valid test?

The table below shows the results. Colour of flask Temperature increase in °CTest 1Test 2Test 3Black 191727Silver 101211Calculate the mean temperature increase for the Silver flask?

This infrared image shows a hand pointing to a switch on a power board. The colours represent the amount of infrared radiation being emitted, as shown by the scale on the right hand side.Identify which statement is true. The hand is emitting the least radiationThe hottest part of the image is the background, shown in dark blueThe switch at point D is emitting the most radiationThe plug at point B is emitting the least radiation