Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Sun's Parts
| Term | Definition |
|---|---|
| Core | The Sun's core is the central region where nuclear reactions consume hydrogen to form helium. These reactions release the energy that ultimately leaves the surface as visible light. The core's temperature is about 15,000,000° C (27,000,000° F). |
| Radiation Zone | The radiative zone extends outward from the outer edge of the core to the interface layer or tachocline at the base of the convection zone. The radiative zone is characterized by the method of energy transport - radiation, transported by light photons. |
| Convective Zone | The convection zone is the outer-most layer of the solar interior. It is about 200,000 km right up to the visible surface. The relatively cool temperature allows heavier ions, thickening the material. This traps radiation,boiling the material. |
| Corona | The Corona is the Sun's outer atmosphere. The corona displays a variety of features including streamers, plumes, and loops. The true nature of the corona remained a mystery until it was determined that the coronal gases are super-heated to temperatures gr |
| Photosphere | The photosphere is the visible surface of the Sun that we are most familiar with. Since the Sun is a ball of gas, this is not a solid surface but is actually a layer about 100 km thick.The photosphere is where the visible light is emitted. |
| Chromosphere | The chromosphere is an irregular layer above the photosphere where the temperature rises from 6000°C to about 20,000°C.Changes in solar flares, prominence and filament eruptions, and the flow of material in post-flare loops can all be observed. |
| Sunspot | Relatively cool spots on the sun that appear dark to us. |
| Prominence | Large eruptions of luminous hydrogen gas that rise thousands of km over the chromosphere. |
| Plasma | a hot ionized material consisting of nuclei and electrons. It is sometimes regarded as a fourth state of matter and is the material present in the sun, most stars, and fusion reactors. |
| Coronal Hole | a part of the solar corona that appears dark on optical and x-ray images and is characterized by low temperature and low density. |
| Filament | a long structure of relatively cool material in the solar corona. |
| Tachocline (interface layer) | The interface layer is between the radiative zone and the convective zone. The movement of the convective zone fade into the calmness of the radiative zone, here. We think that the Sun's magnetic field is generated here. |
Created by:
stupidity
Popular Science sets