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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. 1 mm 1μm
Electromagnetic Radiation: Infrared
supernova
Open Cluster
density parameter
2. 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
supernova
Precession
Ole Roemer
Cepheid variables
3. The location of a supermassive black hole
Nucleus
fewest moons
quasar
Particle Horizon
4. The sinking of denser elements to the center of a young molten 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.
Differential Rotation
Refractor
chemical differentiation
5. The number of protons in an atom.
Doppler Shift
Sb spiral galaxy
Trojan asteroids
Atomic Number
6. A push or a pull
Total Eclipse
The Big Bang Theory
Colestial Pole
force
7. A point in the sky where meteors appear to come from during a shower
Cassegrain Focus
great dark spots
great red spot
radiant
8. A term referring to the orbital character of stars near the Sun
Largest diameter
H2 Regions
Bok Globule
Differential Rotation
9. When one side of a body always faces the planet it revolves around
Electromagnetic Radiation: Visible Light
synchronous rotation
Enke gap
density waves
10. The displacement of spectral lines to redder colors caused by the expansion of the universe.
Thermonuclear Fusion
cosmological red shift
meteoriod
superclusters
11. The class of all objects having high energy radiation coming from their nuclei. Active Galactic Nucleus- Blazars - Quasars - Radio and Emit synchrotron radiation
Blackbody
AGN
mapping the structure of Milky Way disk
How is winding dilemma solved?
12. The philosophical stand that says a simpler explanation is more likely to be correct than a complicated one.
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13. A particle of light
MOONS: thickest atmosphere
Flat - Remain Parallel - Exactly 1
Photon
Sidereal Day
14. 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
Filament
disk
OB Associations
Reflector
15. First accurately measured the speed of light in a vacuum
Ole Roemer
acceleration
Main Sequence
resonance
16. An important quality of telescopes that increases as the square of the primary mirror or objective lens
Apollo asteroids
Light Gathering Power
Electromagnetic Radiation: Radio
Meridian
17. The process responsible for creating the arms of flocculent spiral galaxies
Focal Plane
Self-Propogating Star Formation
Bulge
fastest rotation
18. A telescope that uses lenses to focus light
Halo
general star population
Refractor
thinnest atmosphere
19. Cold aggregates of gas - large and contain a huge amount of matter - so cold that molecules stick together to form molecules.
molecular clouds
MOONS: larger than mercury
Filament
Stephen-Boltzman Law
20. A term referring to Earth-like planets
Dark Matter
tectonics of Earth
Nova
terrestrial planet
21. Half of the longest diameter across an ellipse
Bok Globule
Spectroscopy
semimajor axis
shape and color of SPIRAL galaxies
22. The 11 or 22 period on the sun durin which sunspots increase - decrease - change polarity - increase and decrease again.
Sunspot cycle
Spectroscopic Parallax
Electromagnetic Radiation
Void
23. Ancient stream channels - flood planes - and sedimentary-type rock. Frozen water is found in the polar ice caps and in the soil.
evidence of water on mars
resonance
Nebula
fastest rotation
24. A particle of light.
E=mc2
tectonics of Earth
Granules
Photon
25. Small moons that maintain the shape of rings around Saturn and Uranus
slowest rotation
Shepherd satellite
Grand design spirals
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
26. How did Earth come to have an oxygen rich atmosphere?
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.
roche limit
Self-Propogating Star Formation
Ole Roemer
27. 10 nm 10^2 nm
Degeneracy
Electromagnetic Radiation: X-Ray
Chandrasekhar Limit
Photon
28. 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.
Particle Horizon
tectonics of Earth
Filament
belt
29. A streak of light in the atmosphere
mare basalt
Eclipses of the Moons of Jupiter
meteor
cosmology
30. Venus
Continuous Spectrum
Filament
Thickest atmosphere
Planck time
31. What Ole Roemer used to measure the speed of light in a vacuum
Reflector
retrograde motion
Cassini division
Eclipses of the Moons of Jupiter
32. 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
Dark Nebula
Dwarf planets
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
cosmology
33. When the Sun is farthest south of the celestial equator (About December 22)
Wein's Law
MOONS: roundest shape
chondrite
Winter Solstice
34. Galaxies whose nuclei emit jets of materil at high speeds. material comes from supermassive black holes
radio galaxy
Dark matter candidates
zone
tectonics of Venus
35. Radiation given off by electrons accelerating in a magnetic field
Cosmic Microwave Background (CMB)
Focal Plane
Hydrostatic Equilibrium
Synchrotron Rotation
36. A measure of the ability of a telescope to see fine detail
Thermal Equilibrium
plate tectonics
Cosmic Microwave Background (CMB)
Resolving Power
37. Ganymede
Rich vs poor clusters
Autumnal Equinox
MOONS: largest size
Primary Mirror
38. A telescope that uses mirrors to focus light
How is winding dilemma solved?
Reflector
homogeneous
Precession
39. The fate of the universe if it is closed. The universe expanding as much as possible and then retracting
Ground State
Big Crunch
aphelion
Convection
40. A star fusing hydrogen to helium in it's core
MOONS: roundest shape
Hydrostatic Equilibrium
Main Sequence Stars
Grand design spirals
41. The first rock-sized bodies that formed in the solar nebula from dust grains
nucleus
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.
Cassini division
chondrite
42. The name for the only seriously considered theory of the universe.
Big Bang
HII Region
Ionization
Filament
43. A volume of space where few - if any - galaxies are located
Hubble constant
Prominence
Void
chemical differentiation
44. Sa - Sb galaxies where two magnificent arms wind their way from nucleus out in a symmetrical manner.
fewest moons
Grand design spirals
Electromagnetic Radiation: Microwave
Flat - Remain Parallel - Exactly 1
45. An entity that is likely in the nucleus of most - if not all - galaxies.
supermassive black hole
Coldest surface
Europa (Jupiters moon)
differential rotation
46. Poitns of gravitational stability in the orbit of a planet
Lagrangian Razor
Planck time
regolith
Hipparchus
47. A measure of the ability of a telescope to see fine detail
Resolving Power
nova
Oort cloud
The Local Group
48. Light-colored high-pressure bands in Jupiter's atmosphere
Ecliptic
OB Associations
zone
MOONS: most geologically active
49. Wave- only waves cause an interference pattern when passing through a double slit - particle- only particles deposit energy at specific locations (the way an image builds up on digital camera)
Flat - Remain Parallel - Exactly 1
Light: travels like a wave - detected like a particle
comet
synchronous rotation
50. The process of acquiring material
neutrino
accretion
disk
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