Send the link below via email or IMCopy
Present to your audienceStart remote presentation
- Invited audience members will follow you as you navigate and present
- People invited to a presentation do not need a Prezi account
- This link expires 10 minutes after you close the presentation
- A maximum of 30 users can follow your presentation
- Learn more about this feature in our knowledge base article
Transcript of Skin cancer
Ultraviolet radiation is found naturally in sunlight. Exposure to ultraviolet radiation can cause:
our skin to
3. skin cancer
We cannot see or feel ultraviolet radiation, but our skin responds to it by turning darker. This happens in an attempt to reduce the amount of ultraviolet radiation that reaches deeper skin tissues.
Darker skins absorb more ultraviolet light, so less ultraviolet radiation reaches the deeper tissues. This is important because ultraviolet radiation can cause normal cells to become cancerous.
f, for example, you would get sunburnt after ten minutes in the sun, with Factor 5 applied you could stay in the sun for 50 minutes - or for 1500 minutes with Factor 150 applied. But the real time is usually lower, because some of the sunblock gets absorbed by the skin, and some gets rubbed off.
Death Valley 138 F 2013
Soviet Vostok station Antartica-126 F
Hottest place ever?
Coldest place ever?
To know the causes and effects of skin cancer
To know how we can prevent it
24th May 2016
Sunblocks can reduce the damage caused by ultraviolet radiation. They contain chemicals that absorb a lot of the radiation and prevent it from reaching our skin. They may also contain chemicals that reflect some of the radiation away from the skin.
Manufacturers of sunblocks make products with different sun protection factors:
the higher the factor, the longer you can stay out in the sun without burning
high factor sunblocks reduce the risks from ultraviolet radiation more than low factor sunblocks
Find out how many people die every year from Skin cancer and then do page 100 questions 1-6 or 7-10