Birth of the Star
Stars are balls made up of?
Gas and Dust
What is the color of the coolest stars
Red
What makes a star turn into a nebula oppose to a supernova
Low mass stars become nebulas
What makes a star a supernova oppose to a nebula?
Massive stars become supernovas
Towards the end of the Sun's life what will form
a Red Giant
What is a star called in the beginning of formation before nuclear fusion
Protostar
What is the color of the hottest stars
Blue
Who discovered the first planetary nebula?
Charles Messier
Elements such as gold and uranium are able to be produced during the supernova phase and are heavier than what element?
Iron
What is the temperature range for a Supergiant
3,400K to 20,000K
The fusion of hydrogen nuclei creates?
What is the fuel stars use?
Hydrogen
What is a relatively small star that after they have exhausted their nuclear fuel. Near the end of its nuclear burning stage, this type of star expels most of its outer material, creating a planetary nebula called?
White Dwarf
What are the conditions of a supernova for a black hole to form?
The core remnants of a supernova II that are greater than 3 solar masses.
What is a fully dead red giant called?
Black Dwarf
The lifespan of a star is dependent on?
The mass of the star.
DAILY DOUBLE: Which mass stars have longer lifespans
Low mass stars
What element causes planetary nebulas to glow green
Oxygen
The remains of a supernova will create a rapidly spinning star called
Neutron Star
When a large mass star collapses so complete that no matter or energy can escape this is called
A black hole
Explain the birth of a star
A star starts off as a large cloud of gas that gets pulled together by gravity, small collect over and over again that end up creating a giant ball that reaches 15 million degrees at the center due to the clumps of dust bumping into each other under the pressure of all the other materials. After all this nuclear fusion begins and it starts to glow creating a new star in the universe
What percentage are star's lives spent in main sequence?
What is a planetary nebula?
Multiple bursts that create a cloud of dust and gas ejected by a star nearing the end of it's life cycle.
What causes a supernova to explode?
When the pressure drops low enough in a massive star, gravity suddenly takes over and the star collapses in just seconds.
Explain the Red Giant/ Super Giant phase
Stars convert hydrogen atoms into helium over its course of life in its core. Ultimately, the star runs out of hydrogen fuel, then the internal reaction stops. Without the reactions happening at the core, a star contracts inward through gravity causing it to expand. As this expansion happens the star becomes a subgiant star and then becomes a red giant. Red giants have a cooler surface temperature than the main-sequence star, and because of this, they appear more red than yellow.