Download tire

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

P-nuclei wikipedia, lookup

Modified Newtonian dynamics wikipedia, lookup

Aquarius (constellation) wikipedia, lookup

Ursa Minor wikipedia, lookup

Corvus (constellation) wikipedia, lookup

Boötes wikipedia, lookup

Perseus (constellation) wikipedia, lookup

Corona Australis wikipedia, lookup

Cygnus (constellation) wikipedia, lookup

Cassiopeia (constellation) wikipedia, lookup

Corona Borealis wikipedia, lookup

Timeline of astronomy wikipedia, lookup

Hipparcos wikipedia, lookup

Observational astronomy wikipedia, lookup

Lyra wikipedia, lookup

Serpens wikipedia, lookup

Nebular hypothesis wikipedia, lookup

CoRoT wikipedia, lookup

First observation of gravitational waves wikipedia, lookup

Ursa Major wikipedia, lookup

Stellar evolution wikipedia, lookup

Star formation wikipedia, lookup

Supernova wikipedia, lookup

Stellar kinematics wikipedia, lookup

Dyson sphere wikipedia, lookup

Theoretical astronomy wikipedia, lookup

Star wikipedia, lookup

H II region wikipedia, lookup

Star of Bethlehem wikipedia, lookup

Cygnus X-1 wikipedia, lookup

History of supernova observation wikipedia, lookup

Transcript
Stellar Astronomy Unit 2
Key Terms and Matching Definitions
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
accretion disk
black hole
brown dwarf
Cepheid variable
Chandrasekhar limit
Doppler shift
General Theory of Relativity
giant molecular cloud (GMC)
gravitational lensing
gravitational waves
gravity
helium flash
Hertzsprung-Russell (HR) diagram
hydrogen
main sequence
neutrino
neutron star
pulsar
shell hydrogen burning
supermassive black hole
supernova
thermonuclear fusion
1. The process in which smaller atoms combine to form a large
atom. In the process, energy is released.
2. A disk of gas orbiting a star or black hole.
3. The most common element in the universe and the major
component of stars.
4. The bending of light from a distance star or galaxy by the
gravity of a closer star, galaxy or galaxy cluster.
5. Large black holes found at the center of most galaxies.
6. The oscillations of space caused the rapid movement of
matter, such as a supernova or orbiting black holes.
7. An object whose gravity is so strong that the escape speed
exceeds the speed of light.
8. A type of yellow supergiant pulsating star.
9. A starlike object that is not massive enough to ignite
hydrogen fusion in its core.
10. A plot of the luminosity (or absolute magnitude) of stars
versus their surface temp (or spectral type).
11. A very compact dense star composed almost entirely of
neutrons.
12. The force with which all matter attracts all other matter.
13. A large cloud of interstellar gas and dust in which temperatures are low enough and densities are high enough
for atoms to form into molecules. This is the birth place of new stars.
14. A rapidly rotating neutron star that emits a radio beam that sweeps by us many times a second.
15. The grouping of stars on a H-R diagram extending diagonally across the graph. Stars will spend most of their
lives on this diagonal.
16. A subatomic particle with no electric charge that is produced in the core of the Sun and trillions pass
through us undetected each second.
17. The nearly explosive beginning of helium fusion in the dense core of a solar-mass size red giant star.
18. A massive stellar explosion at the end of a large star’s life as a result of the core collapsing
19. Einstein’s theory of gravity which explains how matter warps spacetime.
20. The maximum mass of a white dwarf … around 1.4 solar masses.
21. The thermonuclear fusion of hydrogen in a shell surrounding the star’s core that occurs during the red giant
phase when helium and heavier elements are fusing in the core.
22. The apparent change in wavelength of light due to the relative motion between the source and the observer
along the line of sight.