How Stars Form
What is a new star call when it is starting to form, but did not go through nuclear fusion yet?
What is a Protostar
Stars spend about what percent of their life in the main sequence?
What is 90%?
When a white dwarf cools down what is it called?
What is a spinning neutron star that appears to give off strong pulses of radio waves?
What is a Pulsar?
What is the biggest planet?
What is Jupiter?
What is denser a nebula or a star?
A star is denser than a nebula.
High mass stars that are 300,000 times brighter than the sun are what color?
What is blue?
How long does it take for a white dwarf to cool down?
What is 20 billion years?
What is an object whose surface gravity is so great that even electromagnetic waves can not escape it?
What is a black hole?
What are the four outer planets?
Jupiter, Saturn, Uranus, Neptune
What is a nebula?
A place where chemical reactions happen.
Yellow stars have a surface temperature of about what?
What is 6,000 K?
A dying star gets rid of most of its mass only its hot core remains. What is that hot core called?
What is a White dwarf?
As High mass stars evolve form hydrogen fusion to the fusion of other elements they grow into what?
What is supergiants?
What are the four inner planets?
Earth, Venus, Mercury, Mars
What does a nebula do as it contracts?
It heats up.
What stars last longer Blue or red stars and why?
Red stars because hot bright blue stars use their fule relatively quickly and burn out faster.
A dying star is surrounded by a cloud of gas what is that cloud of gas called?
What is a planetary nebula?
What does the remaining core of a dying high mass star need to have in order to become a neutron star?
It needs to have a mass about three times less than the sun.
What is the difference between a solar eclipse and a lunar eclipse?
A solar eclipse happens when the moon casts a shadow on the earth so the sun is blocked out of view. A Lunar eclipse occurs when the earth casts a shadow on the moon blocking out the light from the sun.
How does a star form?
A star forms when a nebula gets interrupted and causes it to become dense in one spot. Gravity will intensify in that spot causing it to become larger and denser. Then, nuclear fusion starts.
What factor determines the length of a star's life?
A stars mass will determine its place on the main sequence and how long it will stay there
What do low mass and medium mass stars eventually turn into
What is White Dwarfs?
As fusion slows in high mass stars pressure decreases, gravity eventually overcomes the lower pressure leading to a collapse of the outer layers. That collapse is called what?
What is Supernova?
What are the four types of bodies in our solar system
The Sun, the Planets, Their Moons, and a variety of smaller objects.