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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. Light-colored high-pressure bands in Jupiter's atmosphere
Make up of the terrestrial planets
zone
Gamma-ray Burst
Electromagnetic Radiation
2. The rate of expansion of the universe.
Spectroscopic Parallax
Self-Propogating Star Formation
quasar
Hubble constant
3. A small spherical dark nebula
Largest diameter
Void
We don't know. It might be but does not have to be.
Bok Globule
4. Is there water on the moon?
Yes - frozen at the poles- remains protected from the suns rays
Gamma-ray Burst
Geocentric
Limb darkening
5. The rotation of a star or planet at different speeds at its equator and poles
Ganymede (Jupiter)
differential rotation
radiant
Neutron Star
6. Venus (retrograde)
slowest rotation
evidence of water on mars
Continuous Spectrum
most eccentric orbit
7. What Ole Roemer used to measure the speed of light in a vacuum
Superior planets
cosmological principle
Total Eclipse
Eclipses of the Moons of Jupiter
8. Ancient stream channels - flood planes - and sedimentary-type rock. Frozen water is found in the polar ice caps and in the soil.
Most dense
evidence of water on mars
Hubble constant
most moons
9. 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
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.
Negative - Diverge - Less than 1
nova
10. The source of the force that is accelerating the expansion rate of the universe.
synchronous rotation
Milky way Galaxy
dark energy
Blackbody
11. Ganymede
MOONS: largest size
Red Giant Branch Star
Self-Propogating Star Formation
Neutron Star
12. The mix of pure photon energy that emerged at the start of the universe.
Big Bang
Light Gathering Power
cosmic fireball
Dark matter candidates
13. Atmosphere blocks high energy wavelengths - atmosphere blurs optical radiation - atmosphere absorbs some radiation at all wavelengths even when it gets through.
Synodic Day
3 reasons we orbit satellites to observe universe
differential rotation
Shepherd satellite
14. Collections of young - hot stars
Electromagnetic Radiation: Radio
differential rotation
Hydrostatic Equilibrium
OB Associations
15. The elementary building blocks from which protons and neutrons are formed.
Differential Rotation
quarks
Stephen-Boltzman Law
greatest elongation
16. A small and dim but hot star.
White Dwarf
Inverse Square Law
Thermal Equilibrium
Big Bang
17. Small moons that maintain the shape of rings around Saturn and Uranus
Shepherd satellite
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.
Black Hole
E=mc2
18. A force exerted by reflecting sunlight
Nucleus
Continuous Spectrum
radiation pressure
Kuiper belt
19. Arcs of increased mass concentration that slow stars and gas down as they orbit through which cause the formation of stars.
Resolving Power
Seeing
density waves
Light-Year
20. The mirror that determines the focus configuration of a reflector
conjunction
SETI
Secondary Mirror
Thermonuclear Fusion
21. An element of a highly efficient - two-dimensional electronic light detector
Asymptotic giant Branch Star
Supercluster
Pixel
density
22. Norhern lowlands- darker in color and have far fewer craters as if an ancient sea or ice field covered them. southern highlands- much higher in density of craters.
terrestrial planet
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.
contrast northern lowlands and the southern highlands of mars...
Spectroscopic parallax
23. Dark areas on the sun that are cooler than the surrounding photosphere
Sunspots
Focal Plane
Void
Cepheid variables
24. A word meaning 'the same everywhere throughout.'
homogeneous
Spectroscopy
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.
contrast northern lowlands and the southern highlands of mars...
25. What do we think the actual fate of the universe will be and why do we think this?
radiation dominated universe
evidence of water on mars
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.
Limb darkening
26. The high- temperatature outer layer of the sun
Geocentric
Photon
Corona
Blackbody
27. Radiation (possibly left over from the big bang) that fills the universe. Perfect black body spectrum and tells us a bit aout how galaxies are formed.
Cosmic Microwave Background (CMB)
radio galaxy
disk
Synchrotron Rotation
28. Sudden blasts of gamma radiation from a very distant galaxy caused possibly by a supernova explosion.
Synodic Day
fastest rotation
Gamma ray bursts
CMB
29. The oldest part of the Milky Way
Cassini division
cosmology
Roundest orbit
Halo
30. Orbit in Jupiters orbit
Gravitational Lens
cosmology
Occam's razor
Trojan asteroids
31. A star that is burning hydrogen to helium in a shell surrounding it's core
Red Giant Branch Star
Population 1 vs Population 2 stars
Instability strip
Milky way Galaxy
32. A star fusing hydrogen to helium in it's core
Big Crunch
Pixel
Main Sequence Stars
greehouse effects
33. Medium bulge - moderately would arms - arms have H2 regions in them and look sort of lumpy
Sb spiral galaxy
great red spot
Density Wave
quasar
34. All possible types of energy that can be emitted and absorbed by atoms.
Electron
Electromagnetic Radiation: Visible Light
Electromagnetic Radiation
differential rotation
35. Venus
Focal Length
Roundest orbit
Absolute Magnitude
Halo
36. The movement of the Earth's crustal plates riding on top of the mantle.
Ammonia - methane - and water
coma
Void
plate tectonics
37. The crust of a meteorite caused by its entry into Earth's atmosphere
conjunction
fusion crust
Open - flat - and closed.
Cosmic Microwave Background (CMB)
38. The final end state of an intermediate to high mass star. An entity in which all the electrons have been pushed into the protons.
Big Bang
highlands
Neutron Star
Halo
39. The location in the Milky Way where stars orbit like a solid wheel
Bulge
Light Gathering Power
asteroid
High Velocity Stars
40. Sc galaxies where star formation and destruction is so rapid that supernova explosions are mainly responsible for compressing gas to create new stars.
self-propagating star formation
Kuiper belt
Make up of the terrestrial planets
Sidereal Day
41. Mercury
H2 Regions
thinnest atmosphere
Sc spiral galaxy
chondrite
42. The organization of clusters of galaxies into sheets and strings
Ionization
Nucleus
Hyashi track
Supercluster
43. A cool collection of gas and dust silhouetted against a brighter background of stars and/or gas
Gamma-ray Burst
Dark Nebula
Parsec
Summer Solstice
44. 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
mare basalt
scarp
Continuous Spectrum
Cepheid variables
45. The instant of time after the Big Bang when space and time obtained their characteristics. (t=10^-43 sec when gravity freezes out-instant when gravity started existing as a separate force)
Most dense
Enke gap
Terrestrial Planets
Planck time
46. The dark - relativley smooth areas on the moon; Latin for sea
interstellar dust
Titus-Bode Law
Maria
Cassegrain Focus
47. The movement of the Earth's crustal plates riding on top of the mantle.
plate tectonics
Olber's paradox
Energy Level
cosmological red shift
48. 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.
Flocculent spirals
nova
meteorite
Lagrangian Razor
49. 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)
Black Hole
matter dominated universe
MOONS: larger than mercury
synchrotron radiation
50. A change in the appearance of the sun at the edge of the solar disk
Electromagnetic Radiation: X-Ray
Secondary Mirror
Liquid metallic hydrogen
Limb darkening