A student had read about a glacier that had been covered in insulating material. The idea was to slow down the rate at which the glacier melts in the summer. She investigated this idea using the apparatus shown in the diagram.
(a) In winter, energy is transferred from the warm air inside a house to the air outside. (i) What effect will the energy transferred from the house have on the air outside? (1 mark)
The visible part of the electromagnetic spectrum from a star includes a dark line. This line is at a specific wavelength. The diagram shows the position of the dark line in the spectrum from the Sun and in the spectrum from a distant galaxy.
A headline from a recent magazine article is shown below.
Alpha particles (α), beta particles (β) and gamma rays (γ) are types of nuclear radiation. (i) Which of the three types of radiation is the most strongly ionising? (1 mark)
(a) The diagram represents part of the electromagnetic spectrum.
There is an increasing demand for electricity and the reserve of fossil fuels is decreasing. A way to meet increasing demand for electricity is to build new nuclear power stations. Some people feel that no new nuclear power stations should be built because of the risks associated with nuclear fuels.