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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
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.
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. A particle of light.
Supercluster
Poor Cluster
Photon
3 reasons we orbit satellites to observe universe
2. 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)
fusion crust
Dark matter candidates
roche limit
matter dominated universe
3. In what chemical form are jupiters nitrogen - carbon and oxygen?
Interstellar Extinction
Ammonia - methane - and water
hottest surface
Proton-proton chain
4. 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.
Apparent Magnitude
Spectral Lines
Jupiters red spot
Black Hole
5. The fate of the universe if it is closed. The universe expanding as much as possible and then retracting
Milky way Galaxy
Cosmic Microwave Background
Big Crunch
Seyfert galaxy
6. A word used in astronomy to describe all elements besides hydrogen and helium
cosmic fireball
fusion crust
H-are Diagram
Metals
7. Heavier elements such as iron - silicon - magnesium - sulfer - nickel
Make up of the terrestrial planets
aphelion
Void
Maria
8. The science of measuring the apparent magnitudes of stars by imaging them through different filters.
Photometry
Annular Eclipse
synchronous rotation
nucleus
9. Venus
Roundest orbit
Hydrostatic Equilibrium
Filament
Apollo asteroids
10. A spinning neutron star
Shepherd satellite
Pulsar
inferior planets
Horizontal Branch Star
11. A fusion process in which protons build together to form helium
Occam's razor
Synodic Day
Proton-proton chain
radiation pressure
12. 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
Kirchhoff's Law
Reflector
terrestrial planet
13. A planet that is closer to the sun than the earth
inferior planets
cosmic singularity
Dwarf planets
Eyepiece Lens
14. The dark - relativley smooth areas on the moon; Latin for sea
Enke gap
Self-Propogating Star Formation
Maria
Thermal Equilibrium
15. A word meaning 'the same everywhere throughout.'
homogeneous
Dark Matter
Vernal Equinox
Sb spiral galaxy
16. The universe is isotropic - homogeneous - and without beginning or end in time and space. If the universe is truly homogeneous then every line of sight will eventually end on a galaxy. If it has existed forever then there has been enough time for lig
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17. The law that syas light energy from a blackbody increases as (temperature^4)
Electromagnetic Radiation: Visible Light
Plank's Law
Stephen-Boltzman Law
Objective Lens
18. The opaque universe that existed for 300000 years after the Big Bang. (photons outnumbered nuclei by 1 billion to one - so less light)
inferior planets
Poor Cluster
mare basalt
radiation dominated universe
19. The most mass a white dwarf can have before collapsing to a neutron star
open star clusters
meteor
3 reasons we orbit satellites to observe universe
Chandrasekhar Limit
20. The dark - relativley smooth areas on the moon; Latin for sea
Parsec
Maria
mass
Light-Year
21. Mercury
inferior planets
smallest diameter
cosmological principle
contrast northern lowlands and the southern highlands of mars...
22. A small round distribution of gas surrounding a dying star
accretion
Planetary Nebula
difference between maria and highlands of the moon.
smallest diameter
23. The mix of pure photon energy that emerged at the start of the universe.
Drake equation
Pulsar
cosmic fireball
Big Bang
24. Originially thought to be stars emitting radio radiation but are now concluded to be nuclei of distant galaxies (same as radio galaxies aka emit streams of material)
quasar
interstellar dust
Plague
Steady State Theory (Leads to Olber's Paradox)
25. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder
Make up of the terrestrial planets
shape and color of ELLIPTICAL galaxies
Degeneracy
quasar
26. Mercury and venus
fewest moons
Halo
3 reasons we orbit satellites to observe universe
Metals
27. The elementary building blocks from which protons and neutrons are formed.
Enke gap
White Dwarf
critical density
quarks
28. When the Moon entirely blocks the Sun.
Total Eclipse
Limb darkening
OB Associations
Thickest atmosphere
29. 10 cm -> 1 mm
Electromagnetic Radiation: Microwave
Thermal Equilibrium
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
resonance
30. The process of acquiring material
Open Cluster
Asymptotic giant Branch Star
accretion
Autumnal Equinox
31. A spread of light with an uninterrupted wavelength distribution of energy.
Rich Cluster
gravity
Continuous Spectrum
Focal Plane
32. Why do Galaxies move very rapidly in the interiors of the dense clusters?
roche limit
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
CCD
Proton-proton chain
33. 1μm 100 nm
Cosmic Microwave Background (CMB)
Nova
planetary nebula
Electromagnetic Radiation: Visible Light
34. The ratio of the actual density of the universe to the critical density. (actual density divided by the critical density
Turn off Point
resonance
Red Giant Branch Star
density parameter
35. An object that may remain after a star explodes
Neutron Star
Corona
Cosmological Principle
H-are Diagram
36. 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.
critical density
MOONS: largest size
open star clusters
nucleus
37. Rich= dense crowded cores of galaxies - poor= few members and a looser organization of galaxies
Prominence
Rich vs poor clusters
semimajor axis
meteorite
38. When massive objects bend space and time enough to create multiple images of an object located behind them
acceleration
Negative - Diverge - Less than 1
era of recombination
Gravitational Lens
39. Centered on the sun.
Heliocentric
Electron
Nova
Absorption Spectrum
40. A spectrum of light with energy at only a few wavelengths.
Emission Spectrum
Refractor
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
Plague
41. Dying small mass stars lose their outer layers in a relatively gentle way - creating a round or bipolar nebula about the star (round like planets)
Wein's Law
Electromagnetic Radiation: Visible Light
critical density
planetary nebula
42. A fusion process in which a carbon atom transmutes to oxygen and back - creating a helium atom in the process
CNO Cycle
Hubble constant
A family of radiant energy- includes light
Cassini division
43. A location on an H-are Diagram where evolving stars pulsate
Gamma-ray Burst
Electromagnetic Radiation
Instability strip
Poor Cluster
44. A word used in astronomy to describe all elements besides hydrogen and helium
Metals
Cosmic Microwave Background (CMB)
Absolute Magnitude
tectonics of Venus
45. Jupiter
widmanstatten pattern
Bulge
Largest diameter
Primary Mirror
46. A change in the appearance of the sun at the edge of the solar disk
Summer Solstice
Limb darkening
Active Optics
Pixel
47. An energetic event taking place in the early universe
Flat - Flat
Gamma-ray Burst
conjunction
Photon
48. The family of radiant energy that includes light as a subset
Rich Cluster
Electromagnetic Radiation
Steady State Theory (Leads to Olber's Paradox)
Open - flat - and closed.
49. The movement of the Earth's crustal plates riding on top of the mantle.
Electromagnetic Radiation: Gamma Ray
Focal Length
plate tectonics
Drake equation
50. The elementary building blocks from which protons and neutrons are formed.
quarks
comet
How is winding dilemma solved?
Globular Cluster
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