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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. An entity that is likely in the nucleus of most - if not all - galaxies.
Jovian Planets
Prominence
Apollo asteroids
supermassive black hole
2. The fate of the universe if it is closed. The universe expanding as much as possible and then retracting
If it is in a denser medium - such as glass - it will move slower
Big Crunch
MOONS: most geologically active
Electromagnetic Radiation: Microwave
3. The oldest terrain on the moon
White Dwarf
Seyfert galaxy
highlands
cosmic singularity
4. Old - pock marked - icy surface - interior is not differentiated - geologically dead - NOT ACTIVE SURFACE
Reflector
bulge
Callisto (Jupiter)
Seyfert galaxy
5. 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
evidence of water on mars
If it is in a denser medium - such as glass - it will move slower
E=mc2
6. The mirror that gathers the light in a reflector
Halo
Primary Mirror
Vernal Equinox
hottest surface
7. A measure of the seasonal shifting of a star's position against farther stars or galaxies. The closer the star - the greater is the angular distance it shifts. We use it to find distances to stars that are up to 1000 pc away.
widmanstatten pattern
greatest elongation
greatest elongation
Parallax
8. What Ole Roemer used to measure the speed of light in a vacuum
Hipparchus
Apparent Magnitude
critical density
Eclipses of the Moons of Jupiter
9. A planet that is closer to the sun than the earth
condensation temperature
inferior planets
accretion disk
Photometry
10. A representation of the changes in color and brightness of an evolving protostar.
Parallax
fastest rotation
Hyashi track
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.
11. When massive objects bend space and time enough to create multiple images of an object located behind them
condensation temperature
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
planetary nebula
Gravitational Lens
12. The mirror that determines the focus configuration of a reflector
Electromagnetic Radiation: X-Ray
dark matter
Celestial Equator
Secondary Mirror
13. The north-south line passing directly overhead through the zenith.
Astronomical Unit
Meridian
disk
Coldest surface
14. Hot cells of gas that rise and fall in the hotosphere
Granules
Milky way Galaxy
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.
Radio Galaxy
15. The final end state of a high mass star. .An entity for which gravity has completely overwhelmed all other forces of nature.
Planetary Nebula
Black Hole
The Big Bang Theory
Most dense
16. Sulfurous volcanoes - pools of liquid sulfur - surface resembles cheese pizza ACTIVE SURFACE
Electromagnetic Radiation: Infrared
Cepheid Variable
Io (jupiters moon)
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
17. First accurately measured the speed of light in a vacuum
density parameter
standard candle
Red Giant
Ole Roemer
18. When the Sun is farthest north of the celestial equator (about June 22)
Planck time
Summer Solstice
smallest diameter
Steady State Theory (Leads to Olber's Paradox)
19. Saturn
Flare
fastest rotation
Oort Cloud
least dense
20. The lens in a telescope used to determine the magnification
Active Optics
Sc spiral galaxy
Eyepiece Lens
asteroid
21. That which is responsible for Jupiter's magnetic field
Liquid metallic hydrogen
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.
plate tectonics
Halo
22. A planet orbiting about a distant star
OB Associations
Supernova (You can be my supernova girl)
Extrasolar Planet
Planetary Nebula
23. Dark areas on the sun that are cooler than the surrounding photosphere
rotation curve=winding dilemma?
roche limit
Sunspots
Red Giant Branch Star
24. The dimming of starlight by intervening dust
Synchrotron Rotation
Interstellar Extinction
Heliocentric
Population 1 vs Population 2 stars
25. In an OPEN UNIVERSE - the curvature of space-time is ____ - Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is____.
solar nebula
Negative - Diverge - Less than 1
Vernal Equinox
open star clusters
26. The philosophical stand that says a simpler explanation is more likely to be correct than a complicated one.
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27. 10 nm 10^2 nm
Inverse Square Law
Ecliptic
MOONS: roundest shape
Electromagnetic Radiation: X-Ray
28. When the Sun is farthest north of the celestial equator (about June 22)
Grand design spirals
superclusters
Summer Solstice
Flat - Remain Parallel - Exactly 1
29. Approximate speed of light in a vacuum
Enke gap
300000 KM/sec
era of recombination
highlands
30. The fusion process that turns three helium nuclei into a carbon nucleus
Light Pollution
Synodic Day
Galilean satellite
Triple Alpha rocess
31. When one side of a body always faces the planet it revolves around
rotation curve = dark matter?
Secondary Mirror
synchronous rotation
density
32. 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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33. The dark - relativley smooth areas on the moon; Latin for sea
Halo
Dark matter candidates
Electromagnetic Radiation: X-Ray
Maria
34. A method of finding a star's distance from its absolute magnitude and spectral type or color.
Flare
Spectroscopic Parallax
Winter Solstice
Rich vs poor clusters
35. Either Io -Europa - Ganymede - or Callisto
Galilean satellite
Ionization
Main Sequence Stars
Oort cloud
36. The state of having a balance between inflowing and outflowing heat-- the temp at every radial point is different but constant
Chromosphere
chondrite
Resolving Power
Thermal Equilibrium
37. A particle of light
Photon
Occam's razor
force
Rich Cluster
38. The average distance between the Earth and the Sun (=1.5 x10^8km)
Kirkwood gaps
Parallax
AGN
Astronomical Unit
39. Long - meandering cliff formed when a planet surface cools and shrinks
Electromagnetic Radiation: Ultraviolet Light
SETI
Molecular Clouds
scarp
40. The organization of clusters of galaxies into sheets and strings
cosmological principle
Enke gap
Continuous Spectrum
Supercluster
41. A large and bright but cool star.
Kuiper belt
HII Region
Red Giant
most moons
42. A term referring to Earth-like planets
direct motion
MOONS: largest size
terrestrial planet
greehouse effects
43. In a CLOSED UNIVERSE - the curvature of space-time is _________. Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is _____.
Positive - Converge - Greater than 1
Doppler Shift
How is winding dilemma solved?
Biologicla life created the recycling of nitrogen - co2 - and the production of oxygen. Oxygen is heavier so the atmosphere held onto it easier than hydrogen and helium.
44. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE
Horizontal Branch Star
Europa (Jupiters moon)
isotropic
supernova
45. The elementary building blocks from which protons and neutrons are formed.
quarks
Electromagnetic Radiation: Gamma Ray
Bok Globule
Umbra
46. The philosophical stand that says a simpler explanation is more likely to be correct than a complicated one.
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47. A toroidal or donut-shaped collection of material attracted to a central body like a star or black hole. Dust around an object
CCD
terrestrial planet
accretion disk
Io (jupiters moon)
48. A rock or iron specimen that has fallen from space
Wein's Law
Eclipses of the Moons of Jupiter
Kuiper belt
meteorite
49. A long-lived high-pressure bulge in Jupiter's southern hemisphere
shape and color of ELLIPTICAL galaxies
great red spot
Supernova (You can be my supernova girl)
Parallax
50. 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)
Disk
Planck time
regolith
direct motion