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Test your basic knowledge |
Cosmology
Start Test
Study First
Subject
:
science
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
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. A small and dim but hot star.
Convection
accretion disk
Ammonia - methane - and water
White Dwarf
2. The relation that tells how light dims with distance.
MOONS: largest size
Population 1 vs Population 2 stars
Inverse Square Law
great red spot
3. A very distant - star-like object with huge - broad emission lines. Probably the nucleus of a distant active galaxy.
The Big Bang Theory resolves Olber's Paradox
HII Region
quasar
Brown dwarf
4. The dimming of starlight by intervening dust
Inverse Square Law
protostar
Extrasolar Planet
Interstellar Extinction
5. Population 1 with higher metals and contain many young stars in star clusters. Distribution of stars is everywhere in disk (arms only have 5% more stars)
general star population
CMB
difference between maria and highlands of the moon.
Maria
6. In Ptolemy's geocentric solar system - the large circle on which a planet's epicycle moved around the Earth.
Blackbody
deferent
Autumnal Equinox
planetesimal
7. Comglomerates of ice and rock that orbit the sun in highly elliptical paths
We don't know. It might be but does not have to be.
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.
least dense
comet
8. Sc galaxies where star formation and destruction is so rapid that supernova explosions are mainly responsible for compressing gas to create new stars.
Big Crunch
Trojan asteroids
jovian
self-propagating star formation
9. A change in the appearance of the sun at the edge of the solar disk
Supercluster
Radiative Diffusion
Limb darkening
Flare
10. The study of the universe as a whole.
Autumnal Equinox
Nebula
cosmology
Electromagnetic Radiation: Ultraviolet Light
11. The Big Bang was not an explosion of matter into empty space - like the explosion of a bomb. Instead - it was an emergence of space and time filled with pure energy where before none of this was present. The point from which is emerged is called the
The Big Bang Theory
interstellar dust
H-are Diagram
Flat - Remain Parallel - Exactly 1
12. Matter that reveals itself only through its gravitational attraction.
Electromagnetic Radiation: Microwave
dark matter
meteorite
Thermonuclear Fusion
13. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE
H2 Regions
Europa (Jupiters moon)
Make up of the jovian planets
resonance
14. Population 1- similar to the sun and 2% of elements are metal - Population 2- formed before gas was metal- only a fraction of mass is metal.
Population 1 vs Population 2 stars
White Dwarf
Geocentric
Gravitational Lens
15. Any change in the speed or direction of an object's motion
acceleration
force
blazar
Penumbra
16. Population 1 with higher metals and contain many young stars in star clusters. Distribution of stars is everywhere in disk (arms only have 5% more stars)
Electromagnetic Radiation: Ultraviolet Light
Flat - Flat
general star population
Sc spiral galaxy
17. Dark areas on the sun that are cooler than the surrounding photosphere
Corona
MOONS: thickest atmosphere
Sunspots
Globular Cluster
18. Old - pock marked - icy surface - interior is not differentiated - geologically dead - NOT ACTIVE SURFACE
Callisto (Jupiter)
Sunspot cycle
Photometry
direct motion
19. The number of protons in an atom.
Electromagnetic Radiation: Radio
Atomic Number
tectonics of Venus
Nowhere visible to us. If there are higher dimension then the center would be visible to someone who lives in one. If there are no higher dimensions then the center does not exist.
20. Small moons that maintain the shape of rings around Saturn and Uranus
Dark Nebula
Oort cloud
Shepherd satellite
Focal Length
21. A word meaning 'the same everywhere throughout.'
homogeneous
Photosphere
deferent
Synodic Day
22. The location of a supermassive black hole
Nucleus
Ecliptic
meteorite
Dark matter candidates
23. The apparent magnitude a star would have if it were at a distance of 10 parsecs.
Electron
Absolute Magnitude
In an expanding universe all galaxies see all other galaxies that are not gravitationally bound to them receding away. This is what we see in the Hubble Law. We infer that the Hubble law also holds true for all other galaxies.
molecular clouds
24. The process similar to conduction by which energy moves from the solar core to the convective layer
Continuous Spectrum
Radiative Diffusion
Degeneracy
mare basalt
25. The location around an atom where an electron resides.
Energy Level
Cepheid Variable
nova
Milky way Galaxy
26. A star without enough mass to begin hydrogen fusion
Brown dwarf
Primary Mirror
Hipparchus
Colestial Pole
27. As open clusters age - they push gas away but dust remains this can reflect light giving the cluster a blue-ish color. also called reflection nebula
MOONS: thickest atmosphere
Kirchhoff's Law
Kuiper belt
reflection star clusters
28. A rock or iron specimen that has fallen from space
Absorption Spectrum
Apollo asteroids
meteorite
Hipparchus
29. The mirror that determines the focus configuration of a reflector
Density Wave
cosmological principle
coma
Secondary Mirror
30. Dark - reddish - low-pressure bands in Jupiter's atmosphere
opposition
Ole Roemer
belt
deferent
31. A bright area of higher temperature that often proceeds the formation of sunspots.
Plague
Neutron Star
Cosmic Microwave Background (CMB)
Granules
32. A particle of light
Extrasolar Planet
Electromagnetic Radiation: X-Ray
Photon
Seyfert galaxy
33. A collection of galaxies like the one the Milky Way belongs to
Summer Solstice
Poor Cluster
H-are Diagram
Filament
34. A word used in astronomy to describe all elements besides hydrogen and helium
Cassegrain Focus
Metals
If it is in a denser medium - such as glass - it will move slower
anorthosite
35. The 11 or 22 period on the sun durin which sunspots increase - decrease - change polarity - increase and decrease again.
Gamma ray bursts
Sunspot cycle
meteor
Dwarf planets
36. Small bulges - loosely wound - massive arms - arms have many H2 regions and look very lumpy
Metals
Sc spiral galaxy
CMB
era of recombination
37. Sudden blasts of gamma radiation from a very distant galaxy caused possibly by a supernova explosion.
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
Meridian
Gamma ray bursts
Parallax
38. As open clusters age - they push gas away but dust remains this can reflect light giving the cluster a blue-ish color. also called reflection nebula
Asymptotic giant Branch Star
Ecliptic
reflection star clusters
Terrestrial Planets
39. The wavelengths where a specific element can absorb or emit light.
Olber's paradox
300000 KM/sec
Hipparchus
Spectral Lines
40. The instant of time after the Big Bang when space and time obtained their characteristics. (t=10^-43 sec when gravity freezes out-instant when gravity started existing as a separate force)
Kuiper belt
White Dwarf
Nebula
Planck time
41. Theory virtually demands that the geometry of the universe be ______. Results of measuring lumps in the cosmic background radiation indicate that the universe geometry is ________.
Flat - Flat
Electromagnetic Radiation: Infrared
anorthosite
roche limit
42. The apparent backward motion of a planet against the background of stars.
Chromosphere
thinnest atmosphere
We don't know. It might be but does not have to be.
retrograde motion
43. The number of protons in an atom.
Atomic Number
Population 1 vs Population 2 stars
AGN
Ionization
44. 1μm 100 nm
Terrestrial Planets
coma
Sunspot cycle
Electromagnetic Radiation: Visible Light
45. The final end state of a high mass star. .An entity for which gravity has completely overwhelmed all other forces of nature.
Electromagnetic Radiation
supernova
Black Hole
Bok Globule
46. The apparent magnitude a star would have if it were at a distance of 10 parsecs.
molecular clouds
Absolute Magnitude
disk
thinnest atmosphere
47. Large nebula consisting of very cold gas and dust
resonance
aphelion
differential rotation
Molecular Clouds
48. The movement of the Earth's crustal plates riding on top of the mantle.
Ground State
Heliocentric
plate tectonics
aphelion
49. An object that may remain after a star explodes
Kirkwood gaps
Convection
H-are Diagram
Neutron Star
50. When particles are compressed to an unnatural state where their pressure is not related to their temperature
Galilean satellite
Light Curve
Wein's Law
Degeneracy