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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 spherical dark nebula
Maria
Coldest surface
Spectroscopic Parallax
Bok Globule
2. Titan
Convection
Flat - Remain Parallel - Exactly 1
Degeneracy
MOONS: thickest atmosphere
3. The distance between a lens and its focal plane
aurora
Yes - frozen at the poles- remains protected from the suns rays
Horizontal Branch Star
Focal Length
4. Poitns of gravitational stability in the orbit of a planet
Lagrangian Razor
Titus-Bode Law
We don't know. It might be but does not have to be.
Parallax
5. Massive compact halo objects (MACHO) - weakly interacting massive particles (WIMPY's)
The Big Bang Theory
meteorite
fusion crust
Dark matter candidates
6. A small round distribution of gas surrounding a dying star
Planetary Nebula
Thermal Equilibrium
Blackbody
Filament
7. 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 ________.
synchrotron radiation
Gravitational Lens
Flat - Flat
accretion
8. A term referring to Jupiter-like planets
Neutron Star
Cosmic Microwave Background (CMB)
Proton-proton chain
jovian
9. The family of radiant energy that includes light as a subset
Sc spiral galaxy
planetary nebula
Electromagnetic Radiation
great dark spots
10. The fate of the universe if it is closed. The universe expanding as much as possible and then retracting
self-propagating star formation
Big Crunch
Electromagnetic Radiation: Visible Light
MOONS: larger than mercury
11. A location on an H-are Diagram where evolving stars pulsate
Instability strip
quasar
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
tectonics of Mars
12. 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
300000 KM/sec
High Velocity Stars
bulge
Refractor
13. Moon in less than the angular diameter of the Sun.
Synchrotron Rotation
Annular Eclipse
reflection star clusters
Neutron Star
14. A term referring to the orbital character of stars near the Sun
cosmological red shift
Resolving Power
Differential Rotation
Supernova (You can be my supernova girl)
15. The powdered stone fragments that make up the lunar 'soil'
MOONS: roundest shape
regolith
Blackbody
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.
16. In Ptolemy's geocentric solar system - the small circle on which a planet moved.
Main Sequence Stars
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
epicycle
Make up of the terrestrial planets
17. 30AU to 50Au from sun - consists of ancietn premordial objects made of frozen ice and dust-35000 objects or more that are larger than 100 km in diameter and many more smaller than this
AGN
Electromagnetic Radiation: Radio
Kuiper belt
radio galaxy
18. The process that powers the sun and hydrogen bombs
Light: travels like a wave - detected like a particle
High Velocity Stars
Thermonuclear Fusion
meteor shower
19. Matter so dense that even light cannot escape its gravity
Annular Eclipse
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
Black Hole
Electromagnetic Radiation: Radio
20. The line on an H-are diagram going from upper left to lower right where normal stars of different masses reside.
zone
Oort Cloud
Main Sequence
Triple Alpha rocess
21. The point in its orbit where a planet is nearest the sun
OB Associations
Perihelion
High Velocity Stars
difference between maria and highlands of the moon.
22. 10 nm 10^2 nm
great dark spots
Drake equation
accretion disk
Electromagnetic Radiation: X-Ray
23. The location around an atom where an electron resides.
Poor Cluster
Prominence
Energy Level
most eccentric orbit
24. Infinitely long -> 10 cm
roche limit
smallest diameter
Electromagnetic Radiation: Radio
Annular Eclipse
25. Dark - reddish - low-pressure bands in Jupiter's atmosphere
belt
critical density
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.
Light Curve
26. The sinking of denser elements to the center of a young molten planet
Electromagnetic Radiation
chemical differentiation
Magnification
Population 1 vs Population 2 stars
27. Jupiter
most moons
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
Focal Plane
Enke gap
28. A planet orbiting about a distant star
Ground State
Extrasolar Planet
Ganymede (Jupiter)
Electromagnetic Radiation: Gamma Ray
29. Stars fromt he Halo that have drifted into the disk. as earth zooms past them in a faster orbit they appear to be going backward very fast
deferent
cosmic fireball
accretion disk
High Velocity Stars
30. Hot cells of gas that rise and fall in the hotosphere
Ecliptic
OB Associations
Hyashi track
Granules
31. When the Sun is farthest north of the celestial equator (about June 22)
Milky way Galaxy
Summer Solstice
cosmic fireball
Vernal Equinox
32. In Ptolemy's geocentric solar system - the small circle on which a planet moved.
A family of radiant energy- includes light
mapping the structure of Milky Way disk
epicycle
Apparent Magnitude
33. Large nebula consisting of very cold gas and dust
Superior planets
Molecular Clouds
quarks
Apparent Magnitude
34. Arcs of increased mass concentration that slow stars and gas down as they orbit through which cause the formation of stars.
Spectroscopy
density waves
direct motion
Limb darkening
35. Ganymede
great red spot
Interstellar Extinction
MOONS: largest size
reflection star clusters
36. 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
If it is in a denser medium - such as glass - it will move slower
Secondary Mirror
Molecular Clouds
Cepheid variables
37. The ratio of the actual density of the universe to the critical density. (actual density divided by the critical density
Thermonuclear Fusion
density parameter
great red spot
evidence of water on mars
38. Possible Fates of the Universe
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
Light: travels like a wave - detected like a particle
radio galaxy
Poor Cluster
39. When material is heated and moves taking the heat energy with it
Convection
Sb spiral galaxy
Steady State Theory (Leads to Olber's Paradox)
quasar
40. 100 nm 10 nm
shape and color of ELLIPTICAL galaxies
contrast northern lowlands and the southern highlands of mars...
most moons
Electromagnetic Radiation: Ultraviolet Light
41. Jupiter
Celestial Equator
quasar
most moons
nucleus
42. A small spherical dark nebula
differential rotation
Cosmic Microwave Background (CMB)
epicycle
Bok Globule
43. Any class of objects with a uniform luminosity used to determine distance.
standard candle
Apollo asteroids
Neutron Star
nova
44. Medium bulge - moderately would arms - arms have H2 regions in them and look sort of lumpy
Horizontal Branch Star
Gravitational Lens
Sb spiral galaxy
disk
45. A crystalline patter found in iron meteorites
Jovian Planets
Annular Eclipse
widmanstatten pattern
Rich vs poor clusters
46. How did Earth come to have an oxygen rich atmosphere?
inferior planets
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.
Planetary Nebula
Sb spiral galaxy
47. A toroidal or donut-shaped collection of material attracted to a central body like a star or black hole. Dust around an object
A family of radiant energy- includes light
density parameter
Supernova (You can be my supernova girl)
accretion disk
48. Milky way galaxy is a member - a small poor cluster-about 30 galaxies
Red Giant Branch Star
The Local Group
Dwarf planets
radiant
49. The number of protons in an atom.
density waves
Atomic Number
partile horizon
MOONS: most geologically active
50. The law that describes the blackbody curve - and let to quantum mechanics.
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