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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. Radiation given off by electrons accelerating in a magnetic field
Spectroscopic parallax
Nucleus
Reflector
Synchrotron Rotation
2. Any change in the speed or direction of an object's motion
Parallax
Bulge
Heliocentric
acceleration
3. The location of a supermassive black hole
Parsec
Thermonuclear Fusion
Nucleus
Sa spiral galaxy
4. Highlands: rocks are made of lighter anorthosite (similar to old earth rocks) Maria: rocks made of heavy mare basalt (volcanic rock) everywhere else is loose regolith created by meteoric impact.
difference between maria and highlands of the moon.
supernova
Radio Galaxy
Self-Propogating Star Formation
5. Population 1- similar to the sun and 2% of elements are metal - Population 2- formed before gas was metal- only a fraction of mass is metal.
Seyfert galaxy
Spectral Lines
Electromagnetic Radiation: X-Ray
Population 1 vs Population 2 stars
6. 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.
Dark Nebula
era of recombination
greatest elongation
Active Optics
7. The study of the universe as a whole.
Occam's razor
roche limit
The Big Bang Theory
cosmology
8. The act of removing an electron from an atom.
epicycle
Ionization
H-are Diagram
Synchrotron Rotation
9. The act of removing an electron from an atom.
retrograde motion
Precession
Electromagnetic Radiation: Gamma Ray
Ionization
10. The crust of a meteorite caused by its entry into Earth's atmosphere
Maria
acceleration
fusion crust
Resolving Power
11. The apparent path of the Sun through the stars on the celestial sphere.
standard candle
Absorption Spectrum
Flat - Flat
Ecliptic
12. Wave- only waves cause an interference pattern when passing through a double slit - particle- only particles deposit energy at specific locations (the way an image builds up on digital camera)
Light: travels like a wave - detected like a particle
Plank's Law
planetesimal
opposition
13. Jupiter
Synchrotron Rotation
bulge
fastest rotation
Shepherd satellite
14. Rich= dense crowded cores of galaxies - poor= few members and a looser organization of galaxies
Apollo asteroids
coma
tectonics of Earth
Rich vs poor clusters
15. 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)
Cosmological Principle
Open - flat - and closed.
Nova
general star population
16. Then the Sun moves from north to south across the celestial equator (about September 23)
Reflector
Galilean satellite
Precession
Autumnal Equinox
17. The point where a superior planet is as far away from the sun as it can be (as seen from the Earth)
Seyfert galaxy
radiation pressure
opposition
Focal Length
18. Sa - Sb galaxies where two magnificent arms wind their way from nucleus out in a symmetrical manner.
Grand design spirals
Planck time
300000 KM/sec
Globular Cluster
19. A streak of light in the atmosphere
H2 Regions
meteor
force
The Big Bang Theory resolves Olber's Paradox
20. 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
Asymptotic giant Branch Star
Cosmological Principle
Chromosphere
High Velocity Stars
21. A highly variable galaxy nucleus of which BL Lac is one. Their light is highly energetic and their spectra are featureless. (face on)
blazar
Total Eclipse
great red spot
Electromagnetic Radiation: X-Ray
22. The distance a moon can be from a planet before shattering from tidal forces
Roundest orbit
density waves
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.
roche limit
23. Electromagnetic Radiation
Interstellar Extinction
A family of radiant energy- includes light
Flat - Flat
Cosmic Microwave Background
24. When the Sun moves from south to north across the celestial equator (about March 21)
Photon
Make up of the terrestrial planets
Vernal Equinox
condensation temperature
25. An element of a highly efficient - two-dimensional electronic light detector
Electron
Terrestrial Planets
Roundest orbit
Pixel
26. The line on an H-are diagram going from upper left to lower right where normal stars of different masses reside.
Main Sequence
Ground State
Cepheid variables
MOONS: larger than mercury
27. Long - meandering cliff formed when a planet surface cools and shrinks
Focal Plane
scarp
Red Giant
Hyashi track
28. Jupiter
direct motion
Continuous Spectrum
Largest diameter
Spectroscopy
29. Approximate speed of light in a vacuum
Largest diameter
Flocculent spirals
300000 KM/sec
Extrasolar Planet
30. When massive objects bend space and time enough to create multiple images of an object located behind them
Europa (Jupiters moon)
Gravitational Lens
Magnification
chemical differentiation
31. A representation of the changes in color and brightness of an evolving protostar.
Sb spiral galaxy
Light Gathering Power
Hyashi track
The Big Bang Theory
32. 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 _____.
Kirchhoff's Law
Flat - Remain Parallel - Exactly 1
Granules
SETI
33. An entity that is likely in the nucleus of most - if not all - galaxies.
supermassive black hole
Steady State Theory (Leads to Olber's Paradox)
aphelion
Cosmic Microwave Background (CMB)
34. When the Sun is farthest south of the celestial equator (About December 22)
cosmological red shift
deferent
Winter Solstice
Celestial Sphere
35. Venus (retrograde)
Occam's razor
Electromagnetic Radiation: X-Ray
slowest rotation
resonance
36. An efficient - two-dimensional electronic light detector. Common in digital cameras - they revolutionized astronomical imaging
CCD
Resolving Power
Horizontal Branch Star
coma
37. A planet that is farther from the sun than the Earth is
Vernal Equinox
Superior planets
jovian
Electron
38. Cold aggregates of gas - large and contain a huge amount of matter - so cold that molecules stick together to form molecules.
Oort cloud
molecular clouds
Light: travels like a wave - detected like a particle
terrestrial planet
39. The law that syas light energy from a blackbody increases as (temperature^4)
OB Associations
Bulge
Light: travels like a wave - detected like a particle
Stephen-Boltzman Law
40. The number of protons in an atom.
Astronomical Unit
Sb spiral galaxy
Atomic Number
most eccentric orbit
41. An empirical scheme for predictin ghe orbital distances of planets
belt
radiant
CMB
Titus-Bode Law
42. 10^2 nm 10^7 nm
Electromagnetic Radiation: Gamma Ray
Perihelion
Horizontal Branch Star
Yes - frozen at the poles- remains protected from the suns rays
43. The shadow area behind the Earth or Moon where the Sun is completely obscured.
bulge
aphelion
Umbra
Drake equation
44. A volume of space where few - if any - galaxies are located
Absolute Magnitude
belt
Void
density waves
45. The apparent path of the Sun through the stars on the celestial sphere.
Ecliptic
blazar
Magnification
H2 Regions
46. Orbit in Jupiters orbit
Trojan asteroids
Jupiters red spot
Seyfert galaxy
fastest rotation
47. What causes the zones and belts on jupiter and saturn?
evidence of water on mars
Hubble constant
Neutron Star
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
48. The law that describes the blackbody curve - and let to quantum mechanics.
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183
49. Finding a star's absolute magnitude from it's placement on an HR diagram. After finding the absolute magnitude - we measure the apparent magnitude - for a distance modulus and use this to find the distance. This method is good for finding distances t
supermassive black hole
Absolute Magnitude
Spectroscopic parallax
Proton-proton chain
50. A measure of the ability of a telescope to see fine detail
Differential Rotation
least dense
plate tectonics
Resolving Power