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18 Cards in this Set
- Front
- Back
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How could you describe radiation in a single sentence?
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Radiation is a transfer of energy
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How many types of radiation are there?
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7 types
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The different types of radiation make up the ___________ ______.
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Electromagnetic spectrum
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What is in the centre of the electromagnetic spectrum?
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Visible light
This is easy to remember, it's the only thing you can see!! |
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Energy is delivered as tiny 'droplets' or 'packets', what are these called?
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Photons
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Which type of photons have the least energy and which have the most energy?
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Radio waves have the least.
Gamma rays have the most. Remember - everything in the middle spells MIVUX |
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When photons hit atoms they may cause _________.
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Ionisation
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What form of radiation comes from the sun?
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Ultraviolet radiation
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How can radiation from the sun damage cells in the body?
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It can cause DNA to mutate.
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Sunlight provides energy for what important process in plants?
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Photosynthesis
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The process of photosynthesis adds what to the atmosphere?
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Oxygen
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What 2 compounds do plants need for photosynthesis?
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Carbon dioxide and water
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What protect the Earth from too much radiation from the sun?
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The ozone layer
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What is the ozone made up of?
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3 parts of oxygen (O3)
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What process is the opposite of photosynthesis?
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Respiration - sugar and oxygen make carbon dioxide and water.
So respiration is like photosynthesis backwards. Get used to the equation. |
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What is another name for CO2?
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Carbon dioxide.
1 part carbon and 2 parts oxygen. |
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Name all type of radiation in order from strongest to weakest.
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Radio waves
Microwaves Infra waves Visible light Ultra violet X rays Gamma Remember the strongest and the weakest, and everything in between spells MIVUX |
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What type of radiation does a TV remote use?
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Infra red
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