Star basics
What are they made of?
Plasma
What do you call stars, and everything that orbits them?
star system
What is the center of a star called?
The core
Where are stars born?
In a nebulae
With enough mass in a nebula, what do the gasses begin to do?
contract and start to spin
How does a substance become plasma?
When it is ionized
What do we call our Star System
The Solar System
What occurs in the core?
Nuclear fusion
What is a nebula?
Large cloud of gas that contains hydrogen
It attracts more mass, and eventually will create a hot dense core
What holds a star together?
gravity
What is a star system called with two or more stars?
binary star system
What layer comes after the core
the Radiative zone
What do you measure nebulas in?
Light years
What is the hot dense core called
A protostar
Hot
What is the closest star system to us called?
alpha centauri
What energy is produced in the radiative zone
radiative energy
Why do nebulas' gasses clump together?
because of gravity
When is the star finally born?
After millions of years, when the core is finally hot enough and nuclear fusion begins to take place.
What process only happens in the core of the star?
Nuclear Fusion
How many planets, so far, have been found in alpha centauri?
three
What is the third layer from the center called?
convective zone
What is a nebula often referred to as?
A stellar nursery
What mass star creates a black hole when it dies?
Heavy mass star