Revise GCSE Physics

P1h Stable Earth


  1. What is an Earthquake?
  2. What is a Shock-wave?
  3. What are Seismic waves?
  4. Why are we concerned about Earthquakes?
  5. How do we detect and measure Earthquakes?
  6. What do we call the different types of seismic waves?
  7. What are the three important differences between P-waves and S-waves?
  8. How do we know about the structure of the Earth; in particular, that the core is solid but the outer-core is liquid?

UltraViolet Radiation

  1. What negative effects can exposure to Ultraviolet radation (UV) cause?
  2. How does ultraviolet radiation cause the negative effects?
  3. Does our skin have any protection against UV radiation?
  4. Why does our skin become red or burned by UV radiation?
  5. When is our skin at greatest risk?
  6. How can we reduce these negative effects of ultraviolet radiation?
  7. Is it possible to completely avoid Ultraviolet radiation?
  8. If we cannot avoid sunlight and ultraviolet radiation altogether, what can we do to avoid the negative outcomes associated with UV and sunlight?
  9. How can we reduce exposure to UV in order to minimize risk of damage to our bodies due to ultraviolet radiation?
  10. What is a sunscreen?
  11. What do sunscreens do to protect us from harm due to exposure to ultra violet radiation?
  12. How do sunscreens actually work?
  13. What does Sun Protection Factor mean?
  14. How does the protection provided by a sunscreen change as the number changes?
  15. Are there any benefits to exposure to Ultraviolet radiation?
  16. Why is vitamin D important to us?
  17. Does everyone's skin react the same way to sunlight and the ultraviolet radiation?
  18. Why is darker skin better protected against Ultraviolet radiation?
  19. What does melanin in the skin do for us?
  20. What are the advantages and disadvantages of having light or dark skin?

The Ozone Layer

  1. What does the Ozone layer have to with Global warming and the greenhouse effect?
  2. What is Ozone?
  3. What is the Ozone Layer?
  4. Why is the Ozone layer important? What does it do for us?
  5. How has the hole in the ozone layer increased global warming?
  6. What is a pollutant?
  7. What are CFC's?
  8. What is the problem with releasing CFC's in to the atmosphere?
  9. Can the Ozone layer be repaired?
  10. Why did the banning of CFC's need to be agreed internationally by all countries?
  11. What actually happens when UV radiation is stopped by the Ozone layer?
  12. Is there any other kind of Ozone, that I might need to know about?
  13. Did scientists expect to find the hole in the Ozone layer?
  14. How did Scientists confirm that the Ozone layer reduction was actually happening?