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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 particle of light
Poor Cluster
Reflector
greatest elongation
Photon
2. Sa - Sb galaxies where two magnificent arms wind their way from nucleus out in a symmetrical manner.
Kirchhoff's Law
disk
Neutron Star
Grand design spirals
3. A nearby galaxy with a quasar-like nucleus. closer but less bright than quasars-weaker
Red Giant
neutrino
Hydrostatic Equilibrium
Seyfert galaxy
4. The temp at which a substance in the vacuum of space solidifies
Inverse Square Law
chemical differentiation
Supernova (You can be my supernova girl)
condensation temperature
5. Flattened spherical distribution of old stars with some young stars too. 'hub' of Milky way - stars orbit with solid body speeds. Elongated into bar shape
bulge
3 reasons we orbit satellites to observe universe
Globular Cluster
MOONS: larger than mercury
6. When particles are compressed to an unnatural state where their pressure is not related to their temperature
Degeneracy
Photometry
evidence of water on mars
Electromagnetic Radiation: Ultraviolet Light
7. 1 mm 1μm
Cepheid variables
chemical differentiation
coma
Electromagnetic Radiation: Infrared
8. 1μm 100 nm
Electromagnetic Radiation: Visible Light
Color Index
standard candle
fastest rotation
9. A particle of light.
Photon
The Local Group
reflection star clusters
Density Wave
10. Small moons that maintain the shape of rings around Saturn and Uranus
Celestial Equator
Population 1 vs Population 2 stars
epicycle
Shepherd satellite
11. Why does the earth have few craters while the moon has many?
Pixel
disk
Thermonuclear Fusion
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
12. The process that powers the sun and hydrogen bombs
Thermonuclear Fusion
Degeneracy
AGN
Synchrotron Rotation
13. The relation that tells how light dims with distance.
synchronous rotation
widmanstatten pattern
Inverse Square Law
Spectroscopic parallax
14. Relativity predicts that nothing can travel faster than the speed of light in a vacuum - How can it move slower?
Convection
Parallax
How is winding dilemma solved?
If it is in a denser medium - such as glass - it will move slower
15. Matter that reveals itself only through its gravitational attraction.
Halo
H-are Diagram
dark matter
quasar
16. Flat disk with gas - dust - H2 regions - molecular clouds - dust young stars and remnants of old planetary nebula and supernova remnants. stars spin together with similar velocities called differential rotation
disk
Observations of distant type Ia supernovae indicate that the expansion of the universe is speeding up with time - not slowing down! So there must be a force causing this.
Population 1 vs Population 2 stars
Bulge
17. A repeated - periodic push or pull capable of summing into a larger push or pull
Apparent Magnitude
Chandrasekhar Limit
Coldest surface
resonance
18. A long-lived high-pressure bulge in Jupiter's southern hemisphere
condensation temperature
force
Synodic Day
great red spot
19. A star fusing hydrogen to helium in it's core
epicycle
Density Wave
Electromagnetic Radiation
Main Sequence Stars
20. 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:
smallest diameter
Total Eclipse
Drake equation
Occam's razor
21. Dark - reddish - low-pressure bands in Jupiter's atmosphere
Sunspots
least dense
belt
Electromagnetic Radiation: Gamma Ray
22. A quantity measuring the stability of the Earth's atmosphere
Ammonia - methane - and water
Seeing
Observations of distant type Ia supernovae indicate that the expansion of the universe is speeding up with time - not slowing down! So there must be a force causing this.
belt
23. The law that describes the blackbody curve - and let to quantum mechanics.
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24. Is space infinitely large?
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25. A telescope that uses lenses to focus light
Coronal Loop
Magnification
Refractor
Sunspot cycle
26. Galaxies whose nuclei emit jets of materil at high speeds. material comes from supermassive black holes
radio galaxy
regolith
rotation curve=winding dilemma?
A family of radiant energy- includes light
27. The telescope configuration that has the focus placed at the back of the primary mirror
White Dwarf
Light-Year
Cassegrain Focus
Absorption Spectrum
28. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE
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.
Europa (Jupiters moon)
Gamma ray bursts
White Dwarf
29. The organized effort to find life elsewhere in the universe. (Search for Extra-Terrestrial Intelligence)
SETI
OB Associations
Dark Matter
Observations of distant type Ia supernovae indicate that the expansion of the universe is speeding up with time - not slowing down! So there must be a force causing this.
30. The wavelengths where a specific element can absorb or emit light.
Spectral Lines
differential rotation
Density Wave
Kuiper belt
31. A rock or iron specimen that has fallen from space
Halo
Electromagnetic Radiation: Ultraviolet Light
Radiative Diffusion
meteorite
32. A small spherical dark nebula
evidence of water on mars
Bok Globule
asteroid
cosmic singularity
33. The entity from which the whole universe is postulated to have come from.
Positive - Converge - Greater than 1
condensation temperature
Plank's Law
cosmic singularity
34. A representation of the changes in color and brightness of an evolving protostar.
Hyashi track
Density Wave
Occam's razor
Energy Level
35. 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)
Flat - Remain Parallel - Exactly 1
Flare
Terrestrial Planets
rotation curve = dark matter?
36. The point directly overhead.
Zenith
Nucleus
Seyfert galaxy
Focal Plane
37. Young clusters in disk are irregularly shaped since they have no time to relax into the rounder relaxed shape of globular clusters-will constantly be torn apart and assimilated.
open star clusters
Synodic Day
differential rotation
Resolving Power
38. The rotation period of the Earth measured relative to the Sun.
interstellar dust
Wein's Law
Synodic Day
Terrestrial Planets
39. When a planet lines up with the sun inthe sky
semimajor axis
dark matter
Ecliptic
conjunction
40. A star that blows itself apart
semimajor axis
homogeneous
Largest diameter
Supernova (You can be my supernova girl)
41. 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
Quasar
Parallax
Refractor
42. In what chemical form are jupiters nitrogen - carbon and oxygen?
Ammonia - methane - and water
Sidereal Day
Electromagnetic Radiation: Ultraviolet Light
Quasar
43. The rate of expansion of the universe.
Ganymede (Jupiter)
Resolving Power
Hubble constant
Milky way Galaxy
44. We can infer the absolute magnitude of pulsating variable stars by measuring their pulsation periods. The longer the pulsations - the greater their luminosities. We then again measure their apparent magnitudes - compare it with their absolute magnitu
Halo
tectonics of Earth
Cepheid variables
most moons
45. A star that is burning hydrogen to helium in a shell surrounding it's core
Red Giant Branch Star
Rich Cluster
Seyfert galaxy
meteoriod
46. A phenomenon seen when the Earth passes through the orbit of a burned out comet
meteor shower
mare basalt
Gravitational Lens
Pixel
47. The mass of an object divided by its volume
density
Energy Level
Ole Roemer
High Velocity Stars
48. When the Moon entirely blocks the Sun.
dark energy
jovian
Total Eclipse
Sb spiral galaxy
49. The lowest energy of an atom.
bulge
Neutron Star
Terrestrial Planets
Ground State
50. A collection of galaxies like the one the Milky Way belongs to
cosmological principle
Horizontal Branch Star
deferent
Poor Cluster
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