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About Radiation And Life

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RADIATION AND LIFE

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RAD IA TI ON AND LIFE MODULE P2 www.sciencetutors.zoomshare.com
On Earth, sunlight is filtered through the atmosphere, producing radiant heat and Ultra-Violet (UV) radiation SUN LI G H T www.sciencetutors.zoomshare.com
SUN LI G H T Most energy from the Sun is in the form of visible and UV radiation. www.sciencetutors.zoomshare.com
UV RADIATION ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],www.sciencetutors.zoomshare.com
BASIC FACTS ABOUT UV RA DI AT IO N ,[object Object],[object Object],[object Object],[object Object],[object Object],www.sciencetutors.zoomshare.com
UV RADIATION Ultraviolet radiation (UV) is more energetic than visible radiation and therefore has a shorter wavelength. www.sciencetutors.zoomshare.com
BINGE SUN BATHING Survey shows that short, intense exposure to the sun in much hotter climate doubles your chances of getting the most fatal of skin cancer. TRUE OR FALSE ? And Why? www.sciencetutors.zoomshare.com
Overexposure to ultraviolet radiation (UV), can cause skin cancer and other serious health effects. Your Task Make a list of health problems caused by UV Acknowledgement of photo copied from www.supanet.com www.sciencetutors.zoomshare.com
UV radiation is both Beneficial and Damaging to Human. Class to discuss and note down answers using bullet points BENEFITS AND RISKS www.sciencetutors.zoomshare.com
3 Minutes Task Describe at least any 3 ways that a person can reduce sunburn and the risk of skin cancer. Sunburn Skin cancer www.sciencetutors.zoomshare.com
Discuss and write down simple guidelines you can follow to protect against damage from the sun's harmful rays. Acknowledgement of photo copied from www.supanet.com www.sciencetutors.zoomshare.com
SUNLIGHT AND LIFE www.sciencetutors.zoomshare.com Why Do Plants Have Leaves?
Input And Out Energy In Photosynthesis www.sciencetutors.zoomshare.com PHOTOSYNTHESIS Input Energy comes from the light absorbed by the leaves Output Energy is provided by Respiration when starch is used up.
SUNLIGHT ENERGY & SELECTIVE ABSORPTION www.sciencetutors.zoomshare.com What is selective Absorption? Leaves absorb the red and blue light from sunlight when it falls on leaves but reflect other colours-This process is called selective absorption
What do plants use sunlight Energy for? www.sciencetutors.zoomshare.com ,[object Object],[object Object],[object Object]
www.sciencetutors.zoomshare.com A layer in the Earth's atmosphere that contains relatively high concentrations of ozone ( often written as O 3 ) is called OZONE LAYER OZONE OR O 3 LAYER
www.sciencetutors.zoomshare.com FACTS ABOUT OZONE OR O 3 LAYER ,[object Object],[object Object],[object Object],[object Object],[object Object]
What effect do UV radiation have on Ozone? 3 Atoms of Oxygen in Ozone molecule
What effect do CFCs have on Ozone 3 Atoms of Oxygen in Ozone molecule
What action do we need to take to reduce damage to the ozone layer? 3 Atoms of Oxygen in Ozone molecule
GLOBAL WARMING www.sciencetutors.zoomshare.com CLIMATE CHANGE
EM RADIATION ,[object Object],[object Object],[object Object],[object Object],[object Object]
MOBILE PHONES - COOKED BRAIN? Are Mobile Phones Safe? How safe are Mobile Phones? Class to discuss and note down answers . Homework What are the actual risk and perceived risk of using mobile phones www.sciencetutors.zoomshare.com
TYPES OF RISK www.sciencetutors.zoomshare.com ,[object Object],[object Object]
BINGE SUNBATHING FACTS ,[object Object],[object Object],[object Object],[object Object],[object Object]

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About Radiation And Life

  • 1. RAD IA TI ON AND LIFE MODULE P2 www.sciencetutors.zoomshare.com
  • 2. On Earth, sunlight is filtered through the atmosphere, producing radiant heat and Ultra-Violet (UV) radiation SUN LI G H T www.sciencetutors.zoomshare.com
  • 3. SUN LI G H T Most energy from the Sun is in the form of visible and UV radiation. www.sciencetutors.zoomshare.com
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  • 6. UV RADIATION Ultraviolet radiation (UV) is more energetic than visible radiation and therefore has a shorter wavelength. www.sciencetutors.zoomshare.com
  • 7. BINGE SUN BATHING Survey shows that short, intense exposure to the sun in much hotter climate doubles your chances of getting the most fatal of skin cancer. TRUE OR FALSE ? And Why? www.sciencetutors.zoomshare.com
  • 8. Overexposure to ultraviolet radiation (UV), can cause skin cancer and other serious health effects. Your Task Make a list of health problems caused by UV Acknowledgement of photo copied from www.supanet.com www.sciencetutors.zoomshare.com
  • 9. UV radiation is both Beneficial and Damaging to Human. Class to discuss and note down answers using bullet points BENEFITS AND RISKS www.sciencetutors.zoomshare.com
  • 10. 3 Minutes Task Describe at least any 3 ways that a person can reduce sunburn and the risk of skin cancer. Sunburn Skin cancer www.sciencetutors.zoomshare.com
  • 11. Discuss and write down simple guidelines you can follow to protect against damage from the sun's harmful rays. Acknowledgement of photo copied from www.supanet.com www.sciencetutors.zoomshare.com
  • 12. SUNLIGHT AND LIFE www.sciencetutors.zoomshare.com Why Do Plants Have Leaves?
  • 13. Input And Out Energy In Photosynthesis www.sciencetutors.zoomshare.com PHOTOSYNTHESIS Input Energy comes from the light absorbed by the leaves Output Energy is provided by Respiration when starch is used up.
  • 14. SUNLIGHT ENERGY & SELECTIVE ABSORPTION www.sciencetutors.zoomshare.com What is selective Absorption? Leaves absorb the red and blue light from sunlight when it falls on leaves but reflect other colours-This process is called selective absorption
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  • 16. www.sciencetutors.zoomshare.com A layer in the Earth's atmosphere that contains relatively high concentrations of ozone ( often written as O 3 ) is called OZONE LAYER OZONE OR O 3 LAYER
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  • 18. What effect do UV radiation have on Ozone? 3 Atoms of Oxygen in Ozone molecule
  • 19. What effect do CFCs have on Ozone 3 Atoms of Oxygen in Ozone molecule
  • 20. What action do we need to take to reduce damage to the ozone layer? 3 Atoms of Oxygen in Ozone molecule
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  • 23. MOBILE PHONES - COOKED BRAIN? Are Mobile Phones Safe? How safe are Mobile Phones? Class to discuss and note down answers . Homework What are the actual risk and perceived risk of using mobile phones www.sciencetutors.zoomshare.com
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