Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
31 Cards in this Set
- Front
- Back
|
twin star/ Binary Stars |
Pairs of stars that revolve around each other are called |
|
|
Hydrogen |
The primary element fueling the sun's nuclear fusion reactions is |
|
|
Circumpolar |
A star that is always visible in the night sky is called |
|
|
Hydrogen and helium |
The two most common elements in stars are
|
|
|
Red shift(ed) |
What term describes the wavelengths of light emitted from a star that appear to get longer |
|
|
Blackhole; neutron star |
a super nova, depending on the size on the original star, results in_____ or______ |
|
|
sunspots |
cooler area of the sun that appear darker than the surrounding areas are called
|
|
|
Nuclear fussion |
The process in which small atomic nuclei are combined into larger ones is known as |
|
|
a nebula |
Planets are produced from clouds of gas and dust called |
|
|
doppler effect |
the apparent shift in the spectrum of a star as it moves toward or away from the earth is explained by the |
|
|
Constellations |
Patterns of stars that appear relatively fixed in the nigh sky are known as |
|
|
Color |
The surface temperature of a star is indicated by what physical characteristics |
|
|
5 billion years |
The sun is expected to live |
|
|
Earth |
The apparent motion of stars result from the movement of |
|
|
solar flames |
The most violent of all solar disturbances is callled |
|
|
geomagnetic flames |
As solar wind particles enter the earths's atmosphere, they can generate disturbances |
|
|
polaris/ north star |
From the northern Hemisphere, circumpolar stars appear to be circling |
|
|
Spectrograph (gram) |
In order to analyze starlight, astronomers direct it through an instrument called |
|
|
Planetary nebula |
The outer layers of red giant released at the end of the stage is called |
|
|
big bang theroy |
The idea that all matter and energy was compressed into a small volume that exploded and expanded is |
|
|
radiative zone |
the layer of the sun just outside the core is the |
|
|
Nucleur fussion |
The beginning of ______ marks the birth of a star |
|
|
Aurora |
Electrically charged particles solar wind that strike the earth's upper atmosphere create sheets of light called |
|
|
Radiative zone |
The region of the sun in which energy is transferred in the form of electromagnetic waves is the |
|
|
light years |
the distance between a star and the earth is measured |
|
|
neutron star |
a star that has collapsed to the point where electrons and protons are smashed together is a |
|
|
quasar |
The most distant objects that have been observed from the earth are called |
|
|
black holes |
Massive objects whose dense core collapse because of contraction leave areas in space |
|
|
absolute magnitude |
The true brightness of a star is called |
|
|
32.6 light years |
The distance from the earth to a star that has identical apparent and absolute magnitude is |
|
|
quasar |
object at the center of some galaxies that produce energy at a high rate |
