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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 representation of the changes in color and brightness of an evolving protostar.
Halo
Hyashi track
critical density
radio lobe
2. The location of a supermassive black hole
molecular clouds
Asymptotic giant Branch Star
Main Sequence
Nucleus
3. The organization of clusters of galaxies into sheets and strings
Supercluster
Parallax
opposition
Cosmic Microwave Background
4. A logarithmically scaled value for the measured brightness of a star.
Apparent Magnitude
aurora
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.
Pixel
5. Ganymede and Titan
MOONS: larger than mercury
High Velocity Stars
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.
Nucleus
6. All possible types of energy that can be emitted and absorbed by atoms.
Electromagnetic Radiation
aurora
homogeneous
Poor Cluster
7. Earth
Nova
Most dense
CCD
3 reasons we orbit satellites to observe universe
8. The name for the only seriously considered theory of the universe.
Milky way Galaxy
mass
Big Bang
bulge
9. A plot of star absolute magnitude verses spectral type.
Rich Cluster
Triple Alpha rocess
Europa (Jupiters moon)
H-are Diagram
10. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder
The Big Bang Theory resolves Olber's Paradox
Jovian Planets
Ecliptic
shape and color of ELLIPTICAL galaxies
11. The fusion process that turns three helium nuclei into a carbon nucleus
Triple Alpha rocess
Sb spiral galaxy
High Velocity Stars
Seeing
12. The movement of the Earth's crustal plates riding on top of the mantle.
standard candle
plate tectonics
Make up of the terrestrial planets
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
13. The law that predicts the possible types of spectra.
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14. A quantity measuring the stability of the Earth's atmosphere
Rich Cluster
Seeing
supernova
Geocentric
15. Neptune or uranus
critical density
Density Wave
Particle Horizon
Coldest surface
16. A planet orbiting about a distant star
Asymptotic giant Branch Star
Superior planets
Self-Propogating Star Formation
Extrasolar Planet
17. A crystalline patter found in iron meteorites
critical density
Thermal Equilibrium
widmanstatten pattern
plate tectonics
18. Saturn
anorthosite
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
conjunction
least dense
19. The gap inthe outer portion of Saturn's A ring
Photosphere
Enke gap
meteor shower
blazar
20. Moon in less than the angular diameter of the Sun.
cosmological red shift
Annular Eclipse
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
Hubble constant
21. The law that syas light energy from a blackbody increases as (temperature^4)
general star population
Stephen-Boltzman Law
Supercluster
Magnification
22. The location in an H-are diagram of a star cluster - where stars have just left the main sequence. Used to estimate the cluster age.
Turn off Point
force
fastest rotation
greehouse effects
23. Mercury and venus
We don't know. It might be but does not have to be.
Dwarf planets
protostar
fewest moons
24. The distance between a lens and its focal plane
Galilean satellite
Sc spiral galaxy
scarp
Focal Length
25. The final end state of an intermediate to high mass star. An entity in which all the electrons have been pushed into the protons.
density waves
Hubble constant
Oort Cloud
Neutron Star
26. An important quality of telescopes that increases as the square of the primary mirror or objective lens
fewest moons
Geocentric
Light Gathering Power
Dark Matter
27. Why do Galaxies move very rapidly in the interiors of the dense clusters?
Population 1 vs Population 2 stars
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
jovian
fastest rotation
28. After stars form they pump light energy into surrounding gas causing it to heat up and glow (H2=ionized hydrogen - H1= neutral hydrogen in molcular couds)
H2 Regions
force
Gravitational Lens
Dwarf planets
29. Electromagnetic Radiation
Big Crunch
Electromagnetic Radiation: Radio
quarks
A family of radiant energy- includes light
30. A measure of the ability of a telescope to see fine detail
Resolving Power
Open Cluster
Flat - Flat
radio galaxy
31. 1μm 100 nm
mass
Electromagnetic Radiation: Visible Light
Halo
Resolving Power
32. The process responsible for creating the arms of flocculent spiral galaxies
Titus-Bode Law
fastest rotation
Self-Propogating Star Formation
Photon
33. The amount an image is enlarged by a telescope
accretion
rotation curve = dark matter?
Oort Cloud
Magnification
34. Places in the asteroid belt - caused by resonance with Jupiter - where there are no asteroids
Radio Galaxy
Kirkwood gaps
Asymptotic giant Branch Star
Turn off Point
35. Either Io -Europa - Ganymede - or Callisto
Differential Rotation
The Local Group
Pixel
Galilean satellite
36. The point in its orbit where a planet is farthest from the sun
meteorite
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.
aphelion
Focal Length
37. A repeated - periodic push or pull capable of summing into a larger push or pull
Hipparchus
aphelion
Hubble constant
resonance
38. A particle of light
Olber's paradox
Roundest orbit
3 reasons we orbit satellites to observe universe
Photon
39. The powdered stone fragments that make up the lunar 'soil'
conjunction
contrast northern lowlands and the southern highlands of mars...
regolith
H2 Regions
40. 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
Thermonuclear Fusion
radiation pressure
Main Sequence
41. A small spherical dark nebula
Particle Horizon
Sunspots
Bok Globule
Penumbra
42. The mass of an object divided by its volume
HII Region
synchrotron radiation
density
Heliocentric
43. Largest moon in solar system - two differenet types of terrain - darker terrain is older - NOT ACTIVE SURFACE
Supercluster
Titus-Bode Law
A family of radiant energy- includes light
Ganymede (Jupiter)
44. An efficient - two-dimensional electronic light detector. Common in digital cameras - they revolutionized astronomical imaging
CCD
era of recombination
radiation dominated universe
Halo
45. Population 1 with higher metals and contain many young stars in star clusters. Distribution of stars is everywhere in disk (arms only have 5% more stars)
general star population
partile horizon
Kirkwood gaps
Blackbody
46. In an OPEN UNIVERSE - the curvature of space-time is ____ - Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is____.
Negative - Diverge - Less than 1
most eccentric orbit
reflection star clusters
How is winding dilemma solved?
47. When the Sun is farthest south of the celestial equator (About December 22)
accretion
Winter Solstice
Self-Propogating Star Formation
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.
48. The linear correlation between the rate of the expansion of the universe and distance. Says that as galaxies get farther away in space - the speed with which they recede from us increases. So we can measure the amount of recessional velocity and use
Hubble law
matter dominated universe
Void
Spectroscopy
49. In a FLAT UNIVERSE(our universe) - the curvature of space-time is ________. Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is _____.
critical density
Flat - Remain Parallel - Exactly 1
Seyfert galaxy
Chandrasekhar Limit
50. The organization of clusters of galaxies into sheets and strings
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
Supercluster
Seyfert galaxy
blazar