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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. The layer of the sun just above the photosphere
Coronal Loop
Chromosphere
Meridian
Plank's Law
2. An empirical scheme for predictin ghe orbital distances of planets
Titus-Bode Law
Negative - Diverge - Less than 1
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
fewest moons
3. Poitns of gravitational stability in the orbit of a planet
direct motion
Cosmic Microwave Background
Lagrangian Razor
supermassive black hole
4. The rotation of a star or planet at different speeds at its equator and poles
Supercluster
force
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
differential rotation
5. A star that blows itself apart
Supernova (You can be my supernova girl)
Maria
homogeneous
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
6. The telescope configuration that has the focus placed at the back of the primary mirror
Cassegrain Focus
jovian
Sc spiral galaxy
Prominence
7. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder
Meridian
shape and color of ELLIPTICAL galaxies
White Dwarf
Planetary Nebula
8. Mercury and venus
fewest moons
Make up of the terrestrial planets
mass
Active Optics
9. The point where a superior planet is as far away from the sun as it can be (as seen from the Earth)
Molecular Clouds
Color Index
Negative - Diverge - Less than 1
opposition
10. 1μm 100 nm
OB Associations
Coronal Loop
Disk
Electromagnetic Radiation: Visible Light
11. Venus
Sa spiral galaxy
Roundest orbit
Ground State
difference between maria and highlands of the moon.
12. Where is the center of the expansion
tectonics of Mars
scarp
widmanstatten pattern
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.
13. In Ptolemy's geocentric solar system - the small circle on which a planet moved.
Liquid metallic hydrogen
isotropic
epicycle
supernova
14. In an OPEN UNIVERSE - the curvature of space-time is ____ - Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is____.
era of recombination
Negative - Diverge - Less than 1
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
Titus-Bode Law
15. Elliptical orbits that come inside orbit of the Earth.
Eyepiece Lens
Apollo asteroids
Turn off Point
Hyashi track
16. Heavier elements such as iron - silicon - magnesium - sulfer - nickel
MOONS: roundest shape
Occam's razor
matter dominated universe
Make up of the terrestrial planets
17. 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.
Cassini division
tectonics of Mars
Superior planets
density waves
18. A technique using computer-controlled mirrors to sharpen images distorted by the atmosphere
Dark Matter
Population 1 vs Population 2 stars
Electromagnetic Radiation: Visible Light
Active Optics
19. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE
Triple Alpha rocess
standard candle
Europa (Jupiters moon)
Photon
20. The north-south line passing directly overhead through the zenith.
Differential Rotation
Meridian
Ionization
regolith
21. The point where an inferior planet is as far away from the sun as it can be (as seen from the Earth)
Parallax
greatest elongation
Light: travels like a wave - detected like a particle
Plague
22. An element of a highly efficient - two-dimensional electronic light detector
evidence of water on mars
Red Giant Branch Star
Pixel
partile horizon
23. The mirror that gathers the light in a reflector
Eclipses of the Moons of Jupiter
Primary Mirror
mare basalt
self-propagating star formation
24. The oldest grouping of stars - found in the galaxy halo
Light Curve
Ecliptic
asteroid
Globular Cluster
25. The faint glow of light left over from the Big Bang. cosmic microwave background are the photons that remain after the big bang that have not turned into matter.
molecular clouds
Focal Length
cosmic singularity
CMB
26. The oldest grouping of stars - found in the galaxy halo
Globular Cluster
asteroid
Penumbra
Colestial Pole
27. The oldest terrain on the moon
Focal Length
Seyfert galaxy
fusion crust
highlands
28. A rock or iron specimen that has fallen from space
meteorite
meteor
Chandrasekhar Limit
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.
29. A planet that is farther from the sun than the Earth is
We don't know. It might be but does not have to be.
Seeing
Superior planets
A family of radiant energy- includes light
30. The nuclei of very distant galaxies. Likely a manifestation of supermassive black holes
accretion
Corona
Quasar
Titus-Bode Law
31. Dark - reddish - low-pressure bands in Jupiter's atmosphere
Ole Roemer
Radiative Diffusion
belt
Rich vs poor clusters
32. The apparent magnitude a star would have if it were at a distance of 10 parsecs.
reflection star clusters
Electromagnetic Radiation: Gamma Ray
Absolute Magnitude
Electromagnetic Radiation: Gamma Ray
33. A planet orbiting about a distant star
Ole Roemer
Hyashi track
Extrasolar Planet
Chandrasekhar Limit
34. What are the three possible geometries of the universe?
Open - flat - and closed.
Flat - Remain Parallel - Exactly 1
Convection
Cassegrain Focus
35. A word meaning 'the same in all directions.'
weight
Grand design spirals
Instability strip
isotropic
36. A cloud of ionized hydrogen. Formed when young stars heat the surrounding gas
Flocculent spirals
HII Region
Parsec
standard candle
37. The science of measuring light energy by wavelength.
Eyepiece Lens
radio galaxy
Spectroscopy
contrast northern lowlands and the southern highlands of mars...
38. A streak of light in the atmosphere
Focal Plane
Rich vs poor clusters
fewest moons
meteor
39. Radiation emitted when charged particles spiral rapidly in a magnetic field. come off of jets from black holes.
Planck time
Nebula
Vernal Equinox
synchrotron radiation
40. The wavelengths where a specific element can absorb or emit light.
supernova
Synodic Day
Spectral Lines
3 reasons we orbit satellites to observe universe
41. A particle of light.
Photon
Meridian
superclusters
Cassegrain Focus
42. A star fusing hydrogen to helium in it's core
Atomic Number
Main Sequence Stars
Sa spiral galaxy
mass
43. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE
radio lobe
density waves
Europa (Jupiters moon)
cosmic fireball
44. Orbit in Jupiters orbit
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
Trojan asteroids
Occam's razor
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.
45. Consists of old red stars in slow orbits that plunge through disk and bulge. about 1% are old - round globular clusters.
CNO Cycle
Oort cloud
Halo
Objective Lens
46. A change in the appearance of the sun at the edge of the solar disk
Limb darkening
Astronomical Unit
matter dominated universe
retrograde motion
47. A spread of light with an uninterrupted wavelength distribution of energy.
Most dense
Continuous Spectrum
interstellar dust
Cepheid Variable
48. Material that shoots rapidly out into space. Flares cause Auroras
Thickest atmosphere
Planck time
Terrestrial Planets
Flare
49. The rotation period of the Earth measured relative to the stars.
Sidereal Day
Focal Length
great red spot
comet
50. Moon in less than the angular diameter of the Sun.
evidence of water on mars
matter dominated universe
Annular Eclipse
Make up of the terrestrial planets