• QUESTIONS BEFORE LECTURE 36

now answer these

• What causes the sky to be red in the east at sunrise or west at sunset, and blue in the north during the day? Answer in words and see if you can draw a diagram.
• Name the seven main compounds (molecules) which make up the atmosphere.
• Name the main type of compound which is known to destroy the ozone layer. Where does this polluting type of molecule come from?
• Name 6 gases which cause the greenhouse effect.
• Name two greenhouse gases which are known to be increasing. Where do these polluting molecules come from?
• Draw and label the energy diagram for the energy cascade process common to the ozone effect and the greenhouse effect. Explain how that process describes each effect.