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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 push or a pull
MOONS: larger than mercury
Flocculent spirals
force
mare basalt
2. A measure of the force of gravity on an object
Sunspots
Chromosphere
radiation dominated universe
weight
3. A term referring to Jupiter-like planets
jovian
Cosmic Microwave Background
Roundest orbit
Flat - Remain Parallel - Exactly 1
4. All possible types of energy that can be emitted and absorbed by atoms.
Spectroscopic Parallax
Electromagnetic Radiation
Flocculent spirals
Make up of the terrestrial planets
5. What do we think the actual fate of the universe will be and why do we think this?
CNO Cycle
blazar
Neutron Star
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.
6. A term referring to Earth-like planets
terrestrial planet
Dark Matter
Heliocentric
Poor Cluster
7. The location around an atom where an electron resides.
Hubble law
Horizontal Branch Star
Energy Level
greehouse effects
8. 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
Cepheid variables
aurora
Hydrostatic Equilibrium
density parameter
9. The displacement of spectral lines to redder colors caused by the expansion of the universe.
Black Hole
Planetary Nebula
slowest rotation
cosmological red shift
10. The opaque universe that existed for 300000 years after the Big Bang. (photons outnumbered nuclei by 1 billion to one - so less light)
radiation dominated universe
Electromagnetic Radiation: Ultraviolet Light
Gamma ray bursts
force
11. The oldest part of the Milky Way
Halo
Ground State
cosmic fireball
Plague
12. Is space infinitely large?
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13. The location of a supermassive black hole
cosmology
Zenith
Population 1 vs Population 2 stars
Nucleus
14. The rotation period of the Earth measured relative to the Sun.
Synodic Day
Positive - Converge - Greater than 1
Trojan asteroids
Electromagnetic Radiation: Microwave
15. Formed rapidly - collapsed slower into disk shape - star birth rate is low but lasts longer and ongoing - contain higher mass blue stars.
shape and color of SPIRAL galaxies
quasar
Ganymede (Jupiter)
Radiative Diffusion
16. The 11 or 22 period on the sun durin which sunspots increase - decrease - change polarity - increase and decrease again.
OB Associations
Triple Alpha rocess
Sunspot cycle
roche limit
17. Mercury
Kuiper belt
thinnest atmosphere
Colestial Pole
Blackbody Curve
18. 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
Parallax
nova
Supercluster
19. A change in the appearance of the sun at the edge of the solar disk
Degeneracy
Limb darkening
Heliocentric
hottest surface
20. Dark - reddish - low-pressure bands in Jupiter's atmosphere
Main Sequence Stars
Hubble law
Seeing
belt
21. A massive variable star used to find distances to the galaxies or clusters that contain them.
Electron
Cepheid Variable
The Big Bang Theory
Plague
22. Titan
radio lobe
MOONS: thickest atmosphere
Light: travels like a wave - detected like a particle
Kuiper belt
23. A faint - remarkably uniform distribution of radiation in space
greehouse effects
Spectroscopic parallax
meteorite
Cosmic Microwave Background
24. How is the Hubble Law consistent with an expanding universe?
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.
Yes - frozen at the poles- remains protected from the suns rays
terrestrial planet
quarks
25. The area behind a lens where images are resolved
Focal Plane
tectonics of Earth
interstellar dust
standard candle
26. What is the universe expanding into?
synchrotron radiation
Light Gathering Power
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.
Turn off Point
27. Where is the center of the expansion
Shepherd satellite
Blackbody
aurora
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.
28. Clouds of low density gas often found glowing faintly on either side of an AGN.
radio lobe
neutrino
Instability strip
supermassive black hole
29. The sinking of denser elements to the center of a young molten planet
zone
Plague
Roundest orbit
chemical differentiation
30. The process of acquiring material
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.
Cassegrain Focus
Milky way Galaxy
accretion
31. The oldest part of the Milky Way
Halo
High Velocity Stars
Largest diameter
force
32. Neptune or uranus
Coldest surface
Precession
Enke gap
The Big Bang Theory resolves Olber's Paradox
33. 10^2 nm 10^7 nm
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.
Ionization
The Big Bang Theory
Electromagnetic Radiation: Gamma Ray
34. A change in the wavelength of light caused by a motion between the observer and light (or wave) source (blue shift if getting closer - red shift if moving away)
plate tectonics
Doppler Shift
density
thinnest atmosphere
35. A small spherical dark nebula
H-are Diagram
Bok Globule
Shepherd satellite
meteoriod
36. The distance light travels in one year (=9.46x10^12km).
weight
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.
Autumnal Equinox
Light-Year
37. A nearby galaxy with a quasar-like nucleus. closer but less bright than quasars-weaker
Seyfert galaxy
Inverse Square Law
Magnification
OB Associations
38. In an OPEN UNIVERSE - the curvature of space-time is ____ - Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is____.
Io (jupiters moon)
Spectroscopic parallax
opposition
Negative - Diverge - Less than 1
39. The larger bodies that formed early in teh solar nebula that were chemically differentiated
cosmological principle
planetary nebula
Synchrotron Rotation
planetesimal
40. Thick rigid crust - no longer has plate tectonics but still has convective hot spots that create earth-like volcanoes except that last for billions of years because of lack of tectonics.
tectonics of Mars
Electromagnetic Radiation
Blackbody
Zenith
41. The oldest terrain on the moon
highlands
density waves
Sidereal Day
Oort cloud
42. When massive objects bend space and time enough to create multiple images of an object located behind them
Electromagnetic Radiation: Ultraviolet Light
Refractor
Parallax
Gravitational Lens
43. Any change in the speed or direction of an object's motion
Electromagnetic Radiation: Microwave
acceleration
Cosmic Microwave Background (CMB)
comet
44. The point where an inferior planet is as far away from the sun as it can be (as seen from the Earth)
greehouse effects
Halo
zone
greatest elongation
45. Radiation given off by electrons accelerating in a magnetic field
Instability strip
difference between maria and highlands of the moon.
Plague
Synchrotron Rotation
46. Light scattered through the atmosphere that degrades astronomical images
Kuiper belt
radiation pressure
Light Pollution
cosmic singularity
47. Clouds of low density gas often found glowing faintly on either side of an AGN.
difference between maria and highlands of the moon.
radio lobe
nucleus
Chromosphere
48. Poitns of gravitational stability in the orbit of a planet
Europa (Jupiters moon)
Lagrangian Razor
Light Curve
Gravitational Lens
49. A collection of comets in the plane of the solar system - located beyond the orbit of Pluto
Grand design spirals
Kuiper belt
MOONS: roundest shape
Penumbra
50. The time when the universe cooled sufficiently for atoms to exist. radiation dominated= first 300000 years - THEN era of recombination turns into matter dominated for next.
isotropic
coma
era of recombination
We don't know. It might be but does not have to be.