What are the three basic steps to the nebular theory?
Terms in this set (5)
- step one(4) -The solar nebula consisted of. -hydrogen,
- step two(2) -A disturbance.
- step three(2) -The solar nebula assumed a flat, disk shape.
- step four(2) -Inner planets began to form from metallic.
- step five(2) -Larger outer planets began forming from fragments.
What happens in a nebula?
Nebulae are made of dust and gases—mostly hydrogen and helium. Eventually, the clump of dust and gas gets so big that it collapses from its own gravity. The collapse causes the material at the center of the cloud to heat up-and this hot core is the beginning of a star.
What are the low mass stars?
Low mass stars. Low mass stars (stars with masses less than half the mass of the Sun) are the smallest, coolest and dimmest Main Sequence stars and orange, red or brown in colour. Low mass stars use up their hydrogen fuel very slowly and consequently have long lives.
What is a low or medium mass star?
Low mass stars end up as White Dwarfs composed of mainly Carbon and Oxygen. Medium mass stars have higher temperatures in their cores. The higher T allows fusion reactions creating Oxygen, Neon, Sodium and Magnesium. Medium mass stars end up as White Dwarfs composed of the higher mass elements.
What will happen if a low massive main?
Answer: low mass stars are: hydrogen burning in the core while on the Main Sequence. as the hydrogen fuel runs out, extreme pressure raises the temperature to 100 million degrees, where helium burning becomes possible.
What are medium mass stars?
This includes stars with an initial mass from about 40% of a solar mass up to about two to four solar masses. The star, having burned all the hydrogen in its core, collapses under the force of gravity, the internal temperature again rising with increasing pressure. …
What happens when a medium mass star dies?
THE DEATH OF A LOW OR MEDIUM MASS STAR After a low or medium mass or star has become a red giant the outer parts grow bigger and drift into space, forming a cloud of gas called a planetary nebula. The blue-white hot core of the star that is left behind cools and becomes a white dwarf.
What will a medium mass star become?
Medium Mass Stars become Neutron Stars.
What is the final stage of medium mass stars?
MEDIUM STARS This ring is called a planetary nebula. When the last of the helium atoms in the core are fused into carbon atoms, the medium size star begins to die. Gravity causes the last of the star’s matter to collapse inward and compact. This is the white dwarf stage.
What is the life cycle of a medium mass star?
Medium-mass stars (less than 3 times the mass of our sun) become a red giants and eventually become a supernova. A supernova is the massive explosion of a star accompanied by emission of light and matter so intense that it can outshine an entire galaxy.