Term
| This cycle is responsible for producing roughly 85% of the sun's energy. The remaining 15% are created by this process. |
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Definition
| proton-proton cycle and nuclear fusion process |
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Term
| Sun is made up of this; 4th state of matter |
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Definition
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Term
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Definition
-15,000,000K
-hot enough for nuclear fusion
-hydrogen fused into helium
-this is where energy comes from which generally moves outward |
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Term
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Definition
-70% of the radius of sun
-photons travel through the radiative zone interacting with particles
-photons change from gamma to x-ray and ultraviolet
-takes about 800,000 to 1,000,000 years for the enrgy to travel from the core |
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Term
| The path of the photon on its way toward the outer layers of the sun is in a straight line. T or F? |
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Definition
| FALSE, they do NOT travel in a straight line |
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Term
| In the radiation zone, photons (gain or lose) energy as they move from the core to convection layer? |
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Definition
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Term
| CONVECTION ZONE of the Sun |
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Definition
-ultraviolet photons are absorbed and hear the material at the bottom
-due to the heating, the density change and more dense, cooler material sinks pushing up less dense, warmer material bringing hot material to the "surface"
-As process changes from radiation to convection, transportation of material (mass) is needed to carry the energy |
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Term
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Definition
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Term
| This process, that is also a part of the sun, plays a role in moving energy in the earth's atmosphere. |
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Definition
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Term
| How is thermal energy transported? 3 ways. |
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Definition
| 1. conduction 2. radiation 3. convection |
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Term
| How does conduction (a form of thermal energy) work? |
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Definition
| Energy is transported by particles jumping and giving up some of their energy (this is how heat moves through a wire or through a cooking pot). |
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Term
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Definition
-Sun's "surface"; lowest layer of the atmosphere
-This what we see when we look at the Sun by projection: bright disk |
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Term
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Definition
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Term
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Definition
| darker towards edge/limb of sun where middle is bright because light comes to us in a straight line and...? |
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Term
| Photosphere Characteristic |
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Definition
-Avg. temp is 5800K (weighted avg b/w 4500 and 8000)
-Peak wavelength in the yellow-green (from blackbody curve, Wien's law) |
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Term
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Definition
-Middle layer of the sun's atmosphere
-Chromo means red. Red in color. |
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Term
| Sun's Chromosphere and Corona (similarities) |
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Definition
-Higher temps of the chromosphere and corona compared to the photosphere are due to the greater kinetic energy of the particles in each layer
-There is not a lot of heat energy present in the chromosphere and corona because there is not a lot of mass |
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Term
| The amount of heat energy in a system depends on these 3 characteristics |
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Definition
| 1. Kinetic temperature 2.Type of material 3.The amount of mass |
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Term
| Chromosphere Characteristics |
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Definition
-Temp of 20,000 to 100,000K
-Many solar features
-Discovery of helium from the spectral analysis of the chromosphere's light |
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Term
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Definition
-Outer atmosphere
-White in color
-Extends through the solar system |
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Term
| It is believed that __________ are in part responsible for delivering _____ energy to the chromosphere and corona from the photosphere. These waves are created as the energy bursts out of the top oft he photosphere. |
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Definition
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Term
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Definition
-Temp: 1-2mill K; kinetic temp
-Emissions spectrum
-Fe XIII, indicative of high temperatures
-Shape depends on solar activity
-Changes shape based on activity
-Acoustic (sound) waves travel through bumping: energy leaving photosphere and enter corona, making it hot |
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