Stars
What is a Star?
A big ball of glowing Matter
True or False: Nuclear Fusion occurs at 14 Million C
False: Nuclear Fusion occurs at 15 Million C
The bigger the star is, the faster it will burn through what?
Hydrogen
What are Stellar Distances?
Distances in between stars in the universe.
True or False: Star beginnings start in a Nebula?
True
The force by the fusion of hydrogen and helium goes in which direction?
Outward, agianst the force of gravity
using carbon for fusion also makes what 2 other elements?
Oxygen and Iron
the Parallax method works best for how many light years?
100ly
what is a Protostar?
WHAT WE CALL THE BALL OF MATTER THAT IS MADE WHEN A NEBULA COLLAPSES IN ON ITSELF.
Once a star is out of hydrogen, it will use what 2 elements for Fusion
Helium and Carbon!
Iron is bad for stars why?
Iron Stops fusion because it takes more energy than it prodouces
What uses the principle that if you know the length of one side and the angles of two corners, you can calculate
Triangulation
Neutron Stars can weigh as much as?
Mount Everest
True or False: the shorter the fusion, the shorter the life cycle.
True
if a neutron star is _______ times bigger than the sun, it will make a blackhole
30 times bigger
True or False: Parallax is the apparent change in position of an object against a fixed background when viewed from three different lines of sight
False, Parallax is viewed from 2 diffrent lines of sight
they study black holes, by studying the area around a blackhole.
What Phase is a star in when fusion stars
Protostar
When stars explode what do they make in the process?
a Nebula!
the HIPPARCOS was able to accurately measure stars up to how far away?
1000lys