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Energy for the home
Which of the following statements about p waves is correct?
They are transverse.
They travel more slowly than s waves.
They travel through solids and liquids.
A long-term danger of ultraviolet light is that it can cause:
Wrinkles to disappear.
Compared to a low factor sun block, a high factor sun block:
Allows you to stay in sun longer before burning.
Allows you to stay in sun for less time before burning.
Usually rubs off more easily.
Why is deforestation in tropical regions a problem?
More carbon dioxide is absorbed from the atmosphere.
Less carbon dioxide is 'locked up' in wood.
There is a dangerous increase in biodiversity.
Which of the following is not a greenhouse gas?
What is caused by the release of carbon dioxide into the atmosphere?
What is the chemical formula for ozone?
What sort of artificial chemicals have been responsible for damaging the Earth's ozone layer?
Sulfur dioxide from burning fossil fuels.
Chlorofluorocarbons or CFCs.
Carbon dioxide from burning fossil fuels.