Definitions
The quality of giving off light or shining with reflected light
What is Luminosity?
Think in terms of high/low.
A star that has a higher temperature will have what kind of luminosity.
This is the color a star would appear when its surface temperature is 5,500oC.
What is Yellow?
Before the process of star formation begins, the matter that makes up a star can be found in this form floating space.
What is a Nebula?
This is the main gas that stars are made up of.
What is Hydrogen (H)?
When two atoms of hydrogen collide and combine to form one atom of helium, releasing enormous amounts of energy.
What is Hydrogen fusion?
Think in terms of high/low & bigger/smaller.
A star that has a very low temperature compared to other stars will likely be this when compared to the size of other, hotter stars.
What is smaller?
This is the device scientists utilize to split the light emitted from a star into the different wavelengths that compose it.
What is a spectrograph?
As an outward force compresses a nebula, it increases this force which causes the nebula to increase in mass.
What is Gravity / Gravitational Force?
What is the Main Sequence?
Enormous clouds of dust and gas in space occupying locations between stars
What is Nebula / Nebulae?
What is bigger?
This is the color a star would appear if it had a surface temperature of 4,500oC.
As gravity increases bringing more particles in, this is what happens to the overall energy of the spinning nebula.
What is increases, etc.?
This is the secondary gas that stars are primarily made up of?
What is Helium (He)?
Found in many stars, this state of matter made of a mixture of positive cations and electrons.
(Hint: Its inability to absorb light helps scientists determine composition of a star.)
What is Plasma?
Scientists utilize spectrographs to filter light wavelengths illuminating from a star. The spectrum of a star can help scientists determine these two characteristics of a star.
What is temperature and composition?
This is the temperature range of a star that would radiate a white color with a relatively high luminosity.
What is 7,500 - 10,000oC?
At this temperature, hydrogen fusion begins resulting in official star birth.
What is 10,000,000oC?
This is what determines the color that a star appears upon observation.
What is Composition (absorbs/reflects light)?
Central concentration of matter within spinning, flat-disc nebula.
What is Protostar?
Scientists hypothesize that stars with greater temperatures must have more fuel being burned, and, in turn, more energy being released. The energy resulting in heat and light comes from this internal process.
What is Hydrogen fusion?
A star with a greater composition of metals and a lower temperature would peak at this color on the visible light spectrum.
What is Red?
A massive star has a massive gravitation force pushing in on its center. This outward force balances out that gravitational force, providing us energy in the process.
Stars that are moving away from us as the universe expands are red shifter and have ___________________ frequencies.
What is lower (etc.)?