Life Cycle of a Star
Every star begins at what phase of the life cycle?
Stellar Nebula
What is the next phase of the star after it has gone through the red giant phase?
DAILY DOUBLE
Planetary Nebula
Which phase of the high mass stars has the onion like structure?
Super Red Giant
What elements are present in the stellar nebula?
Mostly hydrogen and helium
What is the core temperature of the average star?
15 Million Degrees Celsius
What is the most common example of a average star?
The Sun
How long does the average star phase last?
10 billion years
What is the core temperature and color of the massive star?
DAILY DOUBLE
40 million Kelvin & Blue-White Color
What element makes up the core of the super red giant?
Iron
How much does the star expand in the red giant phase?
Expands 100-200 times original size
Which phase of the life cycle is also known as the main sequence star?
Average Star
Which phase produces elements like carbon, oxygen, and nitrogen through helium fusion?
Red Giant
What is the exact sequence of the life cycle of a high mass star after the protostar phase?
Massive Star, Red Super Giant, Supernova, Neutron Star or Black Hole
Nearly pure neutrons make up which phase of the life cycle of a star?
Neutron Star
The core becomes exposed in this phase and will last about 50,000 years.
Planetary Nebula
What is the next phase of the star following the collapse of the stellar nebula?
Protostar
What elements primarily make up the white dwarf?
Carbon and Oxygen
What is created at the death of the massive stars (core collapses during supernova)?
Black Hole
Gold, Silver, Uranium
What initiates the formation of the protostar?
The collapse of a cloud of gas and dust under the force of gravity.
When their is no longer fusion happening and no heat or light is emitted the star has entered which phase?
Black Dwarf
In the average star phase hydrogen is converted into helium through a process called what?
Nuclear Fusion
Elements heavier than iron are created in which phase?
Which phase does rapid hydrogen fusion happen and which elements are present?
Massive Star; Elements present are hydrogen and helium
How do composition of low mass and high mass stars differ?
Low mass stars primarily fuse lighter elements such as hydrogen and helium. High mass stars can fuse heavier elements in their cores such as iron.