STARS. Star. A ________________ is a huge mass made of very hot gases (____________________ and ____________________) which produces energy through ________ ___________ process, and then emits such energy in the form of radiation. Hydrogen. Helium. Nuclear Fusion.
A ________________ is a huge mass made of very hot gases (____________________ and ____________________) which produces energy through ________ ___________ process, and then emits such energy in the form of radiation
What is the closest star to Earth?
Proxima Centauri is the next closest at 4.2 light years away
Is it a big star?
No, it is an average (medium) size star
__________ has a tremendously high temperature and pressure. The temperature is roughly 15 million °C. Here is where nuclear fusion occurs, turning four hydrogen nuclei into a single helium nucleus plus a LOT of energy.
_____________________emits radiation. that spreads outwards. The temperature ranges from 15 million °C to one million °C. It may take photons of radiation millions of years to pass through the radiative zone, as they gradually make their way out
____________________ the photons continue to travel outwards via convection (towards lower temperature and pressure). The temperature ranges from one million °C to 6,000 °C.
________________: Surface of the sun (lower atmosphere)
____________ are cool, dark spots on the surface. They are much bigger than the Earth. They occur in a 11-year cycles.
_______________ is a magnetic storm which includes a sudden, rapid, and intense variation in brightness. Radiation is emitted across almost the entire electromagnetic spectrum.
_______________________ is an arc of gas that erupts from the surface of the Sun. They form magnetic loops that hold relatively cool, dense gas suspended above the surface of the Sun.
The top of the corona is constantly flowing into space, where it becomes _________ ____________.
By using spectroscopy
______________: the study of the spectrum of luminous beams and began back in the 19th century.