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Test your basic knowledge |
Cosmology
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Study First
Subject
:
science
Instructions:
Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Is there water on the moon?
Disk
Active Optics
It does not have to expand into anything. It might just be that the 3 dimensions of space are getting bigger. It may also be that our 3 spatial dimensions are expanding into higher dimensions if such things exist.
Yes - frozen at the poles- remains protected from the suns rays
2. Large nebula consisting of very cold gas and dust
Seeing
Molecular Clouds
Cosmic Microwave Background
Extrasolar Planet
3. The law that syas light energy from a blackbody increases as (temperature^4)
Kuiper belt
acceleration
tectonics of Mars
Stephen-Boltzman Law
4. The temp at which a substance in the vacuum of space solidifies
condensation temperature
Ole Roemer
disk
Sb spiral galaxy
5. A measure of the force of gravity on an object
quarks
weight
Halo
Oort cloud
6. The point in its orbit where a planet is nearest the sun
Autumnal Equinox
deferent
Perihelion
Differential Rotation
7. IO
MOONS: most geologically active
quarks
least dense
High and low pressure which stretch into bands due to the rapid differential rotation. deeper - darker colors are in the belts and zones are lighter
8. The dimming of starlight by intervening dust
Jovian Planets
accretion
Interstellar Extinction
Ground State
9. N=are*Fp(Ne)(Fl)(Fi)(Fc)(L) N: number of civilizations possible to communicate with are*: rate solar-like stars are created Fp: fraction of stars with planets Ne: number of planets like ours Fl: fraction of planets with life Fi: intelligent life Fc:
Metals
Umbra
Drake equation
Atomic Number
10. The source of the force that is accelerating the expansion rate of the universe.
Differential Rotation
Olber's paradox
dark energy
Neutron Star
11. Large bulge - tightly wound spiral arms - relatively few h2 regions and are smooth
Sa spiral galaxy
300000 KM/sec
deferent
Extrasolar Planet
12. Moon in less than the angular diameter of the Sun.
Summer Solstice
accretion
Annular Eclipse
Molecular Clouds
13. A star that has become a red giant for the second and final time. It is burning helium to carbon in a shell surrounding the core
great red spot
Asymptotic giant Branch Star
terrestrial planet
bulge
14. Centered on the sun.
Heliocentric
Limb darkening
MOONS: largest size
great red spot
15. The location in an H-are diagram of a star cluster - where stars have just left the main sequence. Used to estimate the cluster age.
Halo
Turn off Point
radio lobe
tectonics of Mars
16. A long-lived high-pressure bulge in Jupiter's southern hemisphere
Winter Solstice
Kirkwood gaps
Cosmological Principle
great red spot
17. That which is responsible for Jupiter's magnetic field
Instability strip
mass
Liquid metallic hydrogen
meteoriod
18. Stars fromt he Halo that have drifted into the disk. as earth zooms past them in a faster orbit they appear to be going backward very fast
The Local Group
MOONS: most geologically active
Gravitational Lens
High Velocity Stars
19. 1. We see rapid movements or high energy radiation coming at some level from the nuclei of nearly every galaxy we have looked at. 2. We suspect that the creation of these supermassive black holes is part of the galaxy formation process.
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
Dark Matter
High and low pressure which stretch into bands due to the rapid differential rotation. deeper - darker colors are in the belts and zones are lighter
Dwarf planets
20. A term referring to Jupiter-like planets
jovian
Quasar
radio lobe
Granules
21. Jupiter - Saturn - Uranus - Neptune
Energy Level
Clouds of sufuric acid (very inhospitable and brightest object in the sky) - process called greenhouse affect traps radiation making it 900 degrees at times - spins with retrograde rotation (sun rises in west) and takes 58.4 days for it to set. Thick
Jovian Planets
Most dense
22. The amount an image is enlarged by a telescope
Magnification
Black Hole
regolith
Main Sequence Stars
23. The location around an atom where an electron resides.
Hubble constant
Vernal Equinox
Energy Level
Grand design spirals
24. Star speed at outer edge of galaxy should begin to diminish - but they dont so we guess that this means there is increasing force (aka dark matter)
rotation curve = dark matter?
Brown dwarf
shape and color of SPIRAL galaxies
Electromagnetic Radiation
25. That which is responsible for Jupiter's magnetic field
Photometry
Neutron Star
Red Giant Branch Star
Liquid metallic hydrogen
26. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder
shape and color of ELLIPTICAL galaxies
Degeneracy
Electromagnetic Radiation: Microwave
Penumbra
27. In Ptolemy's geocentric solar system - the small circle on which a planet moved.
Galilean satellite
epicycle
Winter Solstice
conjunction
28. A volume of space where few - if any - galaxies are located
Void
Summer Solstice
retrograde motion
Photometry
29. The location in the Milky Way where stars orbit like a solid wheel
Hyashi track
Bulge
critical density
standard candle
30. The law that syas light energy from a blackbody increases as (temperature^4)
Red Giant Branch Star
Photometry
Hydrostatic Equilibrium
Stephen-Boltzman Law
31. What causes the zones and belts on jupiter and saturn?
High and low pressure which stretch into bands due to the rapid differential rotation. deeper - darker colors are in the belts and zones are lighter
Sb spiral galaxy
radiant
Kuiper belt
32. A location on an H-are Diagram where evolving stars pulsate
Instability strip
aurora
Cosmic Microwave Background
nucleus
33. An empirical scheme for predictin ghe orbital distances of planets
Seyfert galaxy
Titus-Bode Law
Planetary Nebula
Shepherd satellite
34. An efficient - two-dimensional electronic light detector. Common in digital cameras - they revolutionized astronomical imaging
Resolving Power
CCD
Rich vs poor clusters
White Dwarf
35. The location in an H-are diagram of a star cluster - where stars have just left the main sequence. Used to estimate the cluster age.
3 reasons we orbit satellites to observe universe
anorthosite
Turn off Point
quarks
36. The opaque universe that existed for 300000 years after the Big Bang. (photons outnumbered nuclei by 1 billion to one - so less light)
standard candle
radiation dominated universe
Granules
coma
37. Hurricane-like vortex in southern-hemisphere winds to north and south blow in opposite directions which keep it spinning and with no subsurface features like mountians it persists.
Gamma-ray Burst
Main Sequence Stars
Jupiters red spot
Absorption Spectrum
38. A word meaning 'the same in all directions.'
isotropic
Ganymede (Jupiter)
blazar
mass
39. The cosmological principle is the assumption that the universe is isotropic and homogeneous.The Big Bang assumes it to be a correct principle so that what we observe is exactly like What is too far away to be observed.
Cosmological Principle
Coldest surface
The Big Bang Theory resolves Olber's Paradox
Ole Roemer
40. Earth
Most dense
aphelion
cosmic singularity
Flat - Flat
41. The entity responsible for spiral arms in grand-design spiral galaxies
radio galaxy
Plague
Globular Cluster
Density Wave
42. The point in its orbit where a planet is farthest from the sun
Plank's Law
Red Giant Branch Star
aphelion
High and low pressure which stretch into bands due to the rapid differential rotation. deeper - darker colors are in the belts and zones are lighter
43. Hydrogen and helium (mainly)
Secondary Mirror
Make up of the jovian planets
tectonics of Earth
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
44. The point where an inferior planet is as far away from the sun as it can be (as seen from the Earth)
thinnest atmosphere
greatest elongation
Electromagnetic Radiation: Gamma Ray
Cosmic Microwave Background
45. Saying that the sky should not get dark at night because all lines of sight end on a star meaning that the night sky should be ablaze BUT the big bang - because the universe had a beginning - says that the sky gets dark because out in space - galaxie
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46. When the Moon entirely blocks the Sun.
cosmology
Light Pollution
Total Eclipse
High and low pressure which stretch into bands due to the rapid differential rotation. deeper - darker colors are in the belts and zones are lighter
47. The larger bodies that formed early in teh solar nebula that were chemically differentiated
Kirchhoff's Law
planetesimal
Poor Cluster
Spectroscopy
48. A massive variable star used to find distances to the galaxies or clusters that contain them.
Neutron Star
Gravity only pulls matter back together. Therefore - if gravity is the only force that operates on cosmic scales then the expansion of the universe should decrease with time. The critical density is the value of matter density sufficient to halt the
Cepheid Variable
semimajor axis
49. A cloud of ionized hydrogen. Formed when young stars heat the surrounding gas
HII Region
Atomic Number
Kuiper belt
Prominence
50. The number of protons in an atom.
Supernova (You can be my supernova girl)
comet
Atomic Number
Total Eclipse
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