Radiation and Life P2 Revision mind map.

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Presentation transcript:

Radiation and Life P2 Revision mind map

photons radio Low frequency CFC’s microwave ozone infrared Protects us from harmful UV microwave ozone infrared Electromagnetic spectrum Trapped radiation visible reflected radiation ultraviolet Water vapour Ionising radiation Damages cells Carbon dioxide X-ray high frequency gamma methane Greenhouse effect Time exposure Intensity (strength) Carbon cycle respiration respiration CO2 photosynthesis Benefit / Risk Hydrocarbons fossil fuels ALARA principal Precautionary principal decompose

Radiation from the sun Photons CFC’s found in fridges and aerosols deplete the ozone layer . Ozone protects all living things from harmful UV. Electromagnetic spectrum Radio Microwave Infrared Visible Ultraviolet X-ray gamma Low frequency / energy Ozone (O3) absorbs UV Global warming: Too much gases in the atmosphere absorb and trap (green house effect) the radiation. high frequency / energy Ionising radiation Major greenhouse gases include: Carbon dioxide, methane and water To balance benefit / risk consider: exposure time, intensity and a shield that will absorb radiation i.e. lead, sunblock, etc. High doses kill cells. Smaller doses damage cells. Damaging the DNA can result in cancers. The carbon cycle is a balanced system. Photosynthesis (removes) Respiration (releases) Burning fossil fuels (releases) Death / excretion (releases) Precautionary principal (better safe than sorry!) ALARA principal As Low As Reasonably Acceptable Imbalance of the cycle can cause climate change: burning / deforestation

Explain what is happening in each of the pictures below

Explain the pictures below Ionising radiation

Carbon Cycle

Explain Ionising radiation

Mobile phones: what is the risk? Watch youtube video: cancer and cell phone EMR EMF radiation in children. http://www.youtube.com/watch?v=k2U2-7dgykc