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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 lowest energy of an atom.
partile horizon
Molecular Clouds
planetesimal
Ground State
2. Small compact stars called white dwarfs can have material deposited on their surfaces. In time material heats up and explodes in surface nuclear reaction- star brightens - settles - repeats.
Superior planets
nova
Hipparchus
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
3. Matter so dense that even light cannot escape its gravity
Rich Cluster
Black Hole
blazar
accretion disk
4. When one side of a body always faces the planet it revolves around
hottest surface
regolith
synchronous rotation
Primary Mirror
5. The larger bodies that formed early in teh solar nebula that were chemically differentiated
Jovian Planets
planetesimal
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.
E=mc2
6. Rich= dense crowded cores of galaxies - poor= few members and a looser organization of galaxies
Make up of the jovian planets
The Big Bang Theory
Rich vs poor clusters
partile horizon
7. Centered on the sun.
deferent
Dark Matter
Heliocentric
era of recombination
8. 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
CNO Cycle
Prominence
Sidereal Day
Hubble law
9. The era when the ratio of matter to energy greatly favored matter. (verses radiation dominated universe where it was opaque. Matter is now dominated by gravity not photons)
Thickest atmosphere
We don't know. It might be but does not have to be.
matter dominated universe
OB Associations
10. Hot cells of gas that rise and fall in the hotosphere
Granules
Light Curve
radio lobe
protostar
11. 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
fastest rotation
synchronous rotation
Continuous Spectrum
Spectroscopic parallax
12. The process similar to conduction by which energy moves from the solar core to the convective layer
Plague
Chandrasekhar Limit
Radiative Diffusion
A family of radiant energy- includes light
13. The lens in a telescope used to determine the magnification
Eyepiece Lens
Population 1 vs Population 2 stars
weight
Celestial Sphere
14. A location on an H-are Diagram where evolving stars pulsate
tectonics of Venus
Plague
Wein's Law
Instability strip
15. Mercury
most eccentric orbit
density parameter
Jovian Planets
regolith
16. The science of measuring the apparent magnitudes of stars by imaging them through different filters.
Roundest orbit
Largest diameter
Photometry
Ionization
17. Latin for 'cloud'. A word used to describe the collections of gas and dust in the Milky Way and other galaxies
Liquid metallic hydrogen
Open Cluster
Nebula
Corona
18. The 'edge' of the universe. Light beyond this has not reached us yet.
partile horizon
Disk
Oort cloud
Thermonuclear Fusion
19. A star that is burning hydrogen to helium in a shell surrounding it's core
Red Giant Branch Star
Black Hole
Sunspot cycle
Cassini division
20. Why do Galaxies move very rapidly in the interiors of the dense clusters?
meteorite
fastest rotation
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
Cepheid variables
21. A spectrum of light with energy at only a few wavelengths.
Differential Rotation
fastest rotation
superclusters
Emission Spectrum
22. A rock or iron specimen that has fallen from space
Big Bang
meteorite
fusion crust
aphelion
23. The lens in a telescope used to determine the magnification
Gamma-ray Burst
scarp
highlands
Eyepiece Lens
24. The location of a supermassive black hole
Nucleus
gravity
deferent
CCD
25. The layer of the sun just above the photosphere
Chromosphere
density waves
Gamma-ray Burst
Drake equation
26. The temp at which a substance in the vacuum of space solidifies
MOONS: largest size
Thermonuclear Fusion
great dark spots
condensation temperature
27. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder
shape and color of ELLIPTICAL galaxies
Steady State Theory (Leads to Olber's Paradox)
Main Sequence Stars
dark energy
28. The 'edge' of the universe. Light beyond this has not reached us yet.
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.
partile horizon
Wein's Law
AGN
29. The larger bodies that formed early in teh solar nebula that were chemically differentiated
planetesimal
jovian
Objective Lens
neutrino
30. 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
Coronal Loop
rotation curve = dark matter?
Halo
31. 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
highlands
Sb spiral galaxy
Cepheid variables
bulge
32. Sulfurous volcanoes - pools of liquid sulfur - surface resembles cheese pizza ACTIVE SURFACE
The Big Bang Theory
The Big Bang Theory resolves Olber's Paradox
Io (jupiters moon)
density
33. Jupiter - Saturn - Uranus - Neptune
Jovian Planets
tectonics of Earth
Total Eclipse
Light: travels like a wave - detected like a particle
34. A perfect absorber and radiator of electromagnetic radiation.
Energy Level
Blackbody
Apparent Magnitude
Particle Horizon
35. Sudden blasts of gamma radiation from a very distant galaxy caused possibly by a supernova explosion.
Dark Matter
Nova
Gamma ray bursts
Umbra
36. A bridge of material held in position above the solar surface. They can remain for hours even days
Degeneracy
H-are Diagram
Convection
Prominence
37. A measure of how an object resists accelerating when acted upon by a force. It is proportional the amount of matter in an object
mass
great dark spots
AGN
Horizontal Branch Star
38. Venus (retrograde)
slowest rotation
Sc spiral galaxy
great dark spots
Main Sequence
39. A huge sphere of tenuous gas surrounding the nucleus of a comet
disk
HII Region
coma
Ionization
40. 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.
Active Optics
Hyashi track
Positive - Converge - Greater than 1
difference between maria and highlands of the moon.
41. Neptune or uranus
Neutron Star
Coldest surface
Europa (Jupiters moon)
MOONS: thickest atmosphere
42. Clouds of low density gas often found glowing faintly on either side of an AGN.
Kirchhoff's Law
radio lobe
accretion
Jupiters red spot
43. A planet that is farther from the sun than the Earth is
jovian
Winter Solstice
bulge
Superior planets
44. A telescope that uses mirrors to focus light
Reflector
neutrino
inferior planets
Big Crunch
45. Clouds of low density gas often found glowing faintly on either side of an AGN.
meteoriod
radio lobe
cosmic singularity
Sidereal Day
46. A fusion process in which protons build together to form helium
differential rotation
Electromagnetic Radiation
Proton-proton chain
Doppler Shift
47. What is the universe expanding into?
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.
great dark spots
Light: travels like a wave - detected like a particle
Instability strip
48. The force of attraction between any two objects having mass
Prominence
gravity
reflection star clusters
Heliocentric
49. Arcs of increased mass concentration that slow stars and gas down as they orbit through which cause the formation of stars.
force
radio lobe
density waves
Light Gathering Power
50. The state of having a balance between inflowing and outflowing heat-- the temp at every radial point is different but constant
Precession
Thermal Equilibrium
Photon
Jovian Planets