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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 philosophical stand that says a simpler explanation is more likely to be correct than a complicated one.
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2. The final end state of a high mass star. .An entity for which gravity has completely overwhelmed all other forces of nature.
Triple Alpha rocess
shape and color of SPIRAL galaxies
homogeneous
Black Hole
3. A galaxy emitting large amounts of energy at long wavelengths.
Rich Cluster
jovian
Lagrangian Razor
radio galaxy
4. Plate tectonics due to thickness of crust and maintain their general form when they collide-where most volcanoes are.
Spectroscopic parallax
tectonics of Earth
MOONS: largest size
quasar
5. A large and bright but cool star.
Differential Rotation
Red Giant
Light Gathering Power
greehouse effects
6. The rotation period of the Earth measured relative to the stars.
Oort cloud
Liquid metallic hydrogen
meteor shower
Sidereal Day
7. A point in the sky where meteors appear to come from during a shower
Dark Matter
radiant
Brown dwarf
Supernova (You can be my supernova girl)
8. Sc galaxies where star formation and destruction is so rapid that supernova explosions are mainly responsible for compressing gas to create new stars.
great red spot
Doppler Shift
Electromagnetic Radiation: Infrared
self-propagating star formation
9. A location on an H-are Diagram where evolving stars pulsate
Enke gap
Instability strip
Globular Cluster
Resolving Power
10. When massive objects bend space and time enough to create multiple images of an object located behind them
Spectroscopic parallax
Gravitational Lens
Stephen-Boltzman Law
Terrestrial Planets
11. The oldest part of the Milky Way
Extrasolar Planet
Halo
MOONS: most geologically active
tectonics of Venus
12. The average distance between the Earth and the Sun (=1.5 x10^8km)
asteroid
Astronomical Unit
Limb darkening
Black Hole
13. The most mass a white dwarf can have before collapsing to a neutron star
quasar
Photon
tectonics of Venus
Chandrasekhar Limit
14. The particle horizon is the farthest we can see. It exists because the universe had a beginning and thus a definite age. Light from distances farther away from the particle horizon have not had time to reach us yet.
Rich Cluster
Kuiper belt
Thermonuclear Fusion
Particle Horizon
15. A telescope that uses lenses to focus light
Electromagnetic Radiation: Infrared
Flocculent spirals
Refractor
Lagrangian Razor
16. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder
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.
Neutron Star
shape and color of ELLIPTICAL galaxies
Dark Nebula
17. A high-pressure bulge in Neptune's southern hemisphere
Electromagnetic Radiation: Microwave
Observations of distant type Ia supernovae indicate that the expansion of the universe is speeding up with time - not slowing down! So there must be a force causing this.
roche limit
great dark spots
18. The apparent backward motion of a planet against the background of stars.
Inverse Square Law
Olber's paradox
Color Index
retrograde motion
19. The rotation of a star or planet at different speeds at its equator and poles
differential rotation
Pulsar
Active Optics
accretion
20. Why do Galaxies move very rapidly in the interiors of the dense clusters?
Umbra
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
Blackbody Curve
Extrasolar Planet
21. N=are*Fp(Ne)(Fl)(Fi)(Fc)(L) N: number of civilizations possible to communicate with are*: rate solar-like stars are created Fp: fraction of stars with planets Ne: number of planets like ours Fl: fraction of planets with life Fi: intelligent life Fc:
weight
Eyepiece Lens
Metals
Drake equation
22. Small moons that maintain the shape of rings around Saturn and Uranus
dark matter
Shepherd satellite
Main Sequence
roche limit
23. The law that describes the blackbody curve - and let to quantum mechanics.
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24. Star speed at outer edge of galaxy should begin to diminish - but they dont so we guess that this means there is increasing force (aka dark matter)
Objective Lens
semimajor axis
Thermal Equilibrium
rotation curve = dark matter?
25. A perfect absorber and radiator of electromagnetic radiation.
Blackbody
acceleration
supernova
Degeneracy
26. Galaxies whose nuclei emit jets of materil at high speeds. material comes from supermassive black holes
Largest diameter
difference between maria and highlands of the moon.
regolith
radio galaxy
27. When the Sun is farthest south of the celestial equator (About December 22)
Electromagnetic Radiation: Gamma Ray
Globular Cluster
Winter Solstice
Seeing
28. Jupiter
most moons
rotation curve=winding dilemma?
Terrestrial Planets
condensation temperature
29. The state of having a balance between inward and outard pressures in a gas--the inward force from gravity is balanced by the outward force from heat.
reflection star clusters
Hydrostatic Equilibrium
belt
smallest diameter
30. A star that blows itself apart
Supernova (You can be my supernova girl)
comet
Nova
Radiative Diffusion
31. A star without enough mass to begin hydrogen fusion
Brown dwarf
hottest surface
Refractor
MOONS: most geologically active
32. A representation of the changes in color and brightness of an evolving protostar.
Parsec
meteor shower
Planetary Nebula
Hyashi track
33. Heavier elements such as iron - silicon - magnesium - sulfer - nickel
Dark matter candidates
Self-Propogating Star Formation
Energy Level
Make up of the terrestrial planets
34. A spectrum of light with energy at only a few wavelengths.
Geocentric
Emission Spectrum
Pulsar
Dark matter candidates
35. The apparent magnitude a star would have if it were at a distance of 10 parsecs.
Self-Propogating Star Formation
Dark Nebula
meteor shower
Absolute Magnitude
36. When a planet lines up with the sun inthe sky
widmanstatten pattern
Cepheid variables
MOONS: roundest shape
conjunction
37. 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
Open - flat - and closed.
White Dwarf
Kirkwood gaps
38. The law that describes the blackbody curve - and let to quantum mechanics.
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39. 1-orbit aroudn the sun 2- are in hydrostatic equilibrium and 'mostly round' 3- have not cleared debris around its orbit 4- are not satellites
H-are Diagram
general star population
Dwarf planets
scarp
40. The area behind a lens where images are resolved
Absorption Spectrum
Poor Cluster
Focal Plane
blazar
41. The temp at which a substance in the vacuum of space solidifies
We don't know. It might be but does not have to be.
radiation dominated universe
plate tectonics
condensation temperature
42. A star fusing hydrogen to helium in it's core
Horizontal Branch Star
cosmology
Emission Spectrum
Main Sequence Stars
43. Venus
hottest surface
Filament
Apollo asteroids
cosmic singularity
44. The cosmological principle is the assumption that the universe is isotropic and homogeneous.The Big Bang assumes it to be a correct principle so that what we observe is exactly like What is too far away to be observed.
general star population
Thickest atmosphere
Ground State
Cosmological Principle
45. The distance between a lens and its focal plane
Magnification
Energy Level
Focal Length
Nebula
46. Sudden blasts of gamma radiation from a very distant galaxy caused possibly by a supernova explosion.
accretion disk
Gamma ray bursts
synchronous rotation
Continuous Spectrum
47. A large and bright but cool star.
Bulge
Inverse Square Law
300000 KM/sec
Red Giant
48. 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 _____.
Cepheid variables
Ammonia - methane - and water
Dwarf planets
Flat - Remain Parallel - Exactly 1
49. Long - meandering cliff formed when a planet surface cools and shrinks
Positive - Converge - Greater than 1
supermassive black hole
Cosmic Microwave Background (CMB)
scarp
50. Dark areas on the sun that are cooler than the surrounding photosphere
resonance
Globular Cluster
Dwarf planets
Sunspots