Life Cycle of a Star and Looking into Space Flashcards
1
Q
State the stages of a star cycle. Both stages.
A
Nebula –> Protostar –> Main sequence star –> Red Giant –> White Dwarf
OR
Nebula –> Protostar –> Main sequence star –> Red Supergiant –> Supernova –> Neutron Star or Black Hole
2
Q
How do stars undergo nuclear fusion in the early stages of the star cycle?
A
Hydrogen nuclei fuse together to form helium, which releases lots of energy.
3
Q
What happens during a main sequence star?
A
Thermal expansion, which causes the star to expand, is balanced by the inwards pull of gravity.
4
Q
What do X-ray telescopes do?
A
Help see violent, high-temperature events in space.
5
Q
What did Radio telescopes discover?
A
Cosmic Microwave Background Radiation
6
Q
Equation for energy?
A
E = mc2 Energy = mass(kg) x (speed of light)2
