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30 Cards in this Set
- Front
- Back
Which electromagnetic wavelengths can the human eye detect?
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the visible spectrum of colors
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What is plasma?
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the super-heated ionized state of matter that does not have solid, liquid or gas properties
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What are granules?
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Seething convective cells that divide up the sun's surface
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What are solar flares?
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Severe storms on the sun that give off x-rays adn uv rays
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What are spicules?
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Pointed jets extending from the chromosphere into the corona
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Which has a much higher temperature, the corona or the chromosphere?
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the corona is much hotter
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What is the sun composed of?
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Mostly of hydrogen and helium
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What is a coronagraph?
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An instrument used to produce an artificial eclipse
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What are sunspots?
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Small dark areas on the surface of the sun
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What are neutrinos?
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Tiny particles of energy that travel at the speed of light
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What is a spectroscope?
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An instrument used to identify chemical elements in light
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The visible surface of the sun is the _____________.
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photosphere
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What happens in the core of the sun?
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the zone of the interior where most of the thermonuclear reactions take place
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Disturbances in the corona that rise and descend in loops or jets are called________.
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Prominences
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Which end of the ROYGBIV spectrum is the coolest?
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Red end
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Which wavelengths are shorter, gamma rays or infrared?
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gamma rays
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What are the two parts of sunspots?
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penumbra and the umbra
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What is thought to be the causes of sunspots?
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Sun's magnetic field
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What is a photovoltaic cell?
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The PV cell is capable of converting solar energy into electricity.
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What are the two parts of the sun's atmosphere?
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a thin chromosphere and a very extensive corona
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What is ultraviolet radiation?
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A type of energy the sun gives off that we cannot see and causes sunburns.
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What layer of the atmosphere protects us from harmful UV radiation?
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ozone layer in the stratosphere
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When are you more likely to get a sunburn during the day?
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the hours of 10:00am to 4:00pm
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What does the ozone do to protect us?
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by a complex chemical reaction as the UV is absorbed by the ozone layer
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What else can we do to prevent our skin from sunburn too much exposure?
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wear a sunscreen of at least SPF of 15, stay indoors or in the shade during the hot part of day, wear protective clothing, wear hats and sunglasses
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