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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. 10^2 nm 10^7 nm
Synodic Day
contrast northern lowlands and the southern highlands of mars...
Electromagnetic Radiation: Gamma Ray
radiant
2. 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
Supercluster
quarks
shape and color of SPIRAL galaxies
3. The most mass a white dwarf can have before collapsing to a neutron star
Atomic Number
Planetary Nebula
Red Giant
Chandrasekhar Limit
4. A point in the sky where meteors appear to come from during a shower
coma
Geocentric
radiant
Thickest atmosphere
5. Jupiter - Saturn - Uranus - Neptune
Spectroscopic Parallax
Jovian Planets
Ammonia - methane - and water
Photon
6. A bridge of material held in position above the solar surface. They can remain for hours even days
Gamma ray bursts
Prominence
Open - flat - and closed.
Chromosphere
7. The distance a moon can be from a planet before shattering from tidal forces
roche limit
mare basalt
Coldest surface
Ecliptic
8. Saturn
Geocentric
scarp
Ole Roemer
least dense
9. Light-flaky crust - convective currents cause it to wrinkle and bunch (1/5 of surface). uniform cratering suggests lack of weathering and tectonics. volcanoes are flat due to atmospheric pressure.
tectonics of Venus
MOONS: most geologically active
Rich Cluster
acceleration
10. The oldest terrain on the moon
Electromagnetic Radiation: Infrared
highlands
Most dense
Thickest atmosphere
11. Jupiter
rotation curve=winding dilemma?
most moons
Disk
Umbra
12. Massive compact halo objects (MACHO) - weakly interacting massive particles (WIMPY's)
Oort Cloud
Self-Propogating Star Formation
Neutron Star
Dark matter candidates
13. Material that shoots rapidly out into space. Flares cause Auroras
3 reasons we orbit satellites to observe universe
contrast northern lowlands and the southern highlands of mars...
Flare
matter dominated universe
14. The apparent path of the Sun through the stars on the celestial sphere.
Inverse Square Law
Pulsar
Ecliptic
The Big Bang Theory resolves Olber's Paradox
15. A small round distribution of gas surrounding a dying star
Planetary Nebula
cosmic fireball
Photon
aurora
16. A force exerted by reflecting sunlight
Main Sequence
reflection star clusters
chondrite
radiation pressure
17. When a planet lines up with the sun inthe sky
Hubble law
Metals
conjunction
Main Sequence Stars
18. 1. We see rapid movements or high energy radiation coming at some level from the nuclei of nearly every galaxy we have looked at. 2. We suspect that the creation of these supermassive black holes is part of the galaxy formation process.
Triple Alpha rocess
MOONS: larger than mercury
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
critical density
19. All wavelengths of light emitted by a blackbody.
supernova
Planetary Nebula
Coldest surface
Blackbody Curve
20. The mix of pure photon energy that emerged at the start of the universe.
MOONS: most geologically active
Kirchhoff's Law
cosmic fireball
homogeneous
21. All possible types of energy that can be emitted and absorbed by atoms.
Electromagnetic Radiation
Disk
molecular clouds
meteor shower
22. The layer of the sun just above the photosphere
Pulsar
tectonics of Venus
Chromosphere
standard candle
23. The rotation period of the Earth measured relative to the stars.
Hipparchus
meteorite
Sidereal Day
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
24. Distribution of dust (tells us disk is thin) - find distances to O&B stars and H2 regions (arms are sights of star formation and OB stars live and die at location of birth) -Milky way has four arms. Sun is in spur apart from arms.
mapping the structure of Milky Way disk
Shepherd satellite
Autumnal Equinox
Electromagnetic Radiation
25. 1μm 100 nm
Absorption Spectrum
Electromagnetic Radiation: Visible Light
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
retrograde motion
26. Why do Galaxies move very rapidly in the interiors of the dense clusters?
Blackbody Curve
Hipparchus
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
Metals
27. Plate tectonics due to thickness of crust and maintain their general form when they collide-where most volcanoes are.
The Big Bang Theory
Bulge
Absorption Spectrum
tectonics of Earth
28. Relativity predicts that nothing can travel faster than the speed of light in a vacuum - How can it move slower?
great dark spots
If it is in a denser medium - such as glass - it will move slower
Colestial Pole
fastest rotation
29. IO
Big Bang
MOONS: most geologically active
High Velocity Stars
Geocentric
30. Flat disk with gas - dust - H2 regions - molecular clouds - dust young stars and remnants of old planetary nebula and supernova remnants. stars spin together with similar velocities called differential rotation
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
Seyfert galaxy
condensation temperature
disk
31. A streak of light in the atmosphere
force
meteor
Emission Spectrum
Superior planets
32. A word meaning 'the same everywhere throughout.'
anorthosite
homogeneous
Electromagnetic Radiation: X-Ray
Trojan asteroids
33. An empirical scheme for predictin ghe orbital distances of planets
MOONS: largest size
Titus-Bode Law
Colestial Pole
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
34. The science of measuring light energy by wavelength.
Spectroscopy
Oort Cloud
Limb darkening
mapping the structure of Milky Way disk
35. Formed rapidly - collapsed slower into disk shape - star birth rate is low but lasts longer and ongoing - contain higher mass blue stars.
shape and color of SPIRAL galaxies
Stephen-Boltzman Law
Gamma ray bursts
Sunspot cycle
36. The gap inthe outer portion of Saturn's A ring
Enke gap
H-are Diagram
Quasar
Photometry
37. The amount an image is enlarged by a telescope
OB Associations
Sb spiral galaxy
Quasar
Magnification
38. Latin for 'cloud'. A word used to describe the collections of gas and dust in the Milky Way and other galaxies
mass
Seeing
homogeneous
Nebula
39. A small spherical dark nebula
Ammonia - methane - and water
Cosmic Microwave Background (CMB)
Objective Lens
Bok Globule
40. Dying large-mass stars lose their outer layers in a violent explosion creating large - chaotic remnants. these brighten like nova but are so much brighter and only occur ONCE PER STAR
Coronal Loop
acceleration
supernova
deferent
41. Flat disk with gas - dust - H2 regions - molecular clouds - dust young stars and remnants of old planetary nebula and supernova remnants. stars spin together with similar velocities called differential rotation
Kirchhoff's Law
Open - flat - and closed.
cosmological principle
disk
42. A push or a pull
Electromagnetic Radiation
Sb spiral galaxy
force
Trojan asteroids
43. The process similar to conduction by which energy moves from the solar core to the convective layer
reflection star clusters
self-propagating star formation
Differential Rotation
Radiative Diffusion
44. The ratio of the actual density of the universe to the critical density. (actual density divided by the critical density
acceleration
density parameter
E=mc2
Titus-Bode Law
45. The force of attraction between any two objects having mass
Emission Spectrum
gravity
rotation curve=winding dilemma?
Inverse Square Law
46. Hurricane-like vortex in southern-hemisphere winds to north and south blow in opposite directions which keep it spinning and with no subsurface features like mountians it persists.
Pixel
density waves
aurora
Jupiters red spot
47. The trapping of heat by carbon dioxide or other gases in the Earth's atmosphere.
planetary nebula
blazar
Light-Year
greehouse effects
48. 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.
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
OB Associations
CMB
Apparent Magnitude
49. The surface of the sun
Photosphere
Vernal Equinox
Photon
Flat - Remain Parallel - Exactly 1
50. Light scattered through the atmosphere that degrades astronomical images
Spectroscopic Parallax
quarks
Light Pollution
Gravitational Lens