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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. Atmosphere blocks high energy wavelengths - atmosphere blurs optical radiation - atmosphere absorbs some radiation at all wavelengths even when it gets through.
3 reasons we orbit satellites to observe universe
dark energy
Eclipses of the Moons of Jupiter
interstellar dust
2. The first rock-sized bodies that formed in the solar nebula from dust grains
Kuiper belt
chondrite
Electromagnetic Radiation: Visible Light
Prominence
3. A spinning neutron star
Particle Horizon
Main Sequence Stars
belt
Pulsar
4. Venus
Roundest orbit
Triple Alpha rocess
force
Big Crunch
5. Plate tectonics due to thickness of crust and maintain their general form when they collide-where most volcanoes are.
Dark Nebula
Shepherd satellite
Particle Horizon
tectonics of Earth
6. Then the Sun moves from north to south across the celestial equator (about September 23)
contrast northern lowlands and the southern highlands of mars...
nucleus
thinnest atmosphere
Autumnal Equinox
7. 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
Superior planets
disk
CCD
meteoriod
8. A fusion process in which protons build together to form helium
Red Giant Branch Star
Europa (Jupiters moon)
Proton-proton chain
Make up of the terrestrial planets
9. Light scattered through the atmosphere that degrades astronomical images
Bulge
density parameter
widmanstatten pattern
Light Pollution
10. A phenomenon seen when the Earth passes through the orbit of a burned out comet
Roundest orbit
Penumbra
meteor shower
Focal Plane
11. The north-south line passing directly overhead through the zenith.
CMB
meteoriod
Gravitational Lens
Meridian
12. 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.
Filament
nucleus
open star clusters
Autumnal Equinox
13. Massive compact halo objects (MACHO) - weakly interacting massive particles (WIMPY's)
Big Bang
Poor Cluster
Refractor
Dark matter candidates
14. The dark - relativley smooth areas on the moon; Latin for sea
reflection star clusters
Maria
Eclipses of the Moons of Jupiter
Europa (Jupiters moon)
15. The projection of the Earth's equator onto the celestial sphere.
Celestial Equator
Neutron Star
scarp
Flat - Remain Parallel - Exactly 1
16. The normal eastward movement of a planet against the background of hte distant stars.
Supercluster
The Big Bang Theory
Photon
direct motion
17. A small round distribution of gas surrounding a dying star
Planetary Nebula
Dark Nebula
inferior planets
Supernova (You can be my supernova girl)
18. What causes the zones and belts on jupiter and saturn?
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
cosmological principle
Summer Solstice
Objective Lens
19. The movement of the Earth's crustal plates riding on top of the mantle.
plate tectonics
superclusters
anorthosite
Kirkwood gaps
20. The linear correlation between the rate of the expansion of the universe and distance. Says that as galaxies get farther away in space - the speed with which they recede from us increases. So we can measure the amount of recessional velocity and use
Triple Alpha rocess
Convection
Particle Horizon
Hubble law
21. Moon in less than the angular diameter of the Sun.
Occam's razor
density parameter
interstellar dust
Annular Eclipse
22. The law that syas light energy from a blackbody increases as (temperature^4)
Photon
Stephen-Boltzman Law
Proton-proton chain
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
23. Moon in less than the angular diameter of the Sun.
A family of radiant energy- includes light
Granules
Annular Eclipse
synchronous rotation
24. The nuclei of very distant galaxies. Likely a manifestation of supermassive black holes
Quasar
planetesimal
300000 KM/sec
cosmological principle
25. In Ptolemy's geocentric solar system - the small circle on which a planet moved.
We don't know. It might be but does not have to be.
gravity
epicycle
High Velocity Stars
26. 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.
Interstellar Extinction
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
CMB
Cosmic Microwave Background (CMB)
27. 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
disk
Zenith
Neutron Star
AGN
28. Milky way galaxy is a member - a small poor cluster-about 30 galaxies
Oort Cloud
Hydrostatic Equilibrium
The Local Group
If it is in a denser medium - such as glass - it will move slower
29. The rotation period of the Earth measured relative to the Sun.
Synodic Day
Sunspots
Summer Solstice
Triple Alpha rocess
30. The amount an image is enlarged by a telescope
Dark Matter
Asymptotic giant Branch Star
Sidereal Day
Magnification
31. What Ole Roemer used to measure the speed of light in a vacuum
highlands
chemical differentiation
Eclipses of the Moons of Jupiter
Rich vs poor clusters
32. Mercury
smallest diameter
Globular Cluster
roche limit
retrograde motion
33. The distance light travels in one year (=9.46x10^12km).
tectonics of Mars
Light-Year
Olber's paradox
Atomic Number
34. Then the Sun moves from north to south across the celestial equator (about September 23)
Sunspots
Autumnal Equinox
Ole Roemer
Europa (Jupiters moon)
35. All possible types of energy that can be emitted and absorbed by atoms.
Light: travels like a wave - detected like a particle
interstellar dust
partile horizon
Electromagnetic Radiation
36. The sinking of denser elements to the center of a young molten planet
Lagrangian Razor
meteoriod
Big Crunch
chemical differentiation
37. A cool collection of gas and dust silhouetted against a brighter background of stars and/or gas
Dark Nebula
zone
Photometry
shape and color of ELLIPTICAL galaxies
38. The measure of a variable star's apparent magnitude as it brightens and dims with time
Liquid metallic hydrogen
Corona
Light Curve
Synodic Day
39. A cloud of ionized hydrogen. Formed when young stars heat the surrounding gas
blazar
HII Region
Total Eclipse
Thickest atmosphere
40. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder
thinnest atmosphere
cosmological red shift
Brown dwarf
shape and color of ELLIPTICAL galaxies
41. The science of measuring the apparent magnitudes of stars by imaging them through different filters.
condensation temperature
Photometry
MOONS: roundest shape
Liquid metallic hydrogen
42. The entity responsible for spiral arms in grand-design spiral galaxies
Refractor
Blackbody Curve
Callisto (Jupiter)
Density Wave
43. A particle of light.
nucleus
Focal Plane
supermassive black hole
Photon
44. The first rock-sized bodies that formed in the solar nebula from dust grains
Disk
chondrite
Instability strip
molecular clouds
45. 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
Rich vs poor clusters
tectonics of Venus
Interstellar Extinction
46. The fate of the universe if it is closed. The universe expanding as much as possible and then retracting
Main Sequence Stars
Focal Plane
Big Crunch
rotation curve = dark matter?
47. Distance from sun to nucleus- 8 kiloparsecs (26000 LY) - diameter of Milky way- 150000 LY - length for sun to orbit once around milky way- 250 million years
Milky way Galaxy
Triple Alpha rocess
Gamma-ray Burst
Ammonia - methane - and water
48. In Ptolemy's geocentric solar system - the large circle on which a planet's epicycle moved around the Earth.
Cosmic Microwave Background (CMB)
deferent
mass
Neutron Star
49. If stars have diff orbital periods - than any arms formed by stars will wind into a tight spiral pattern (billion yrs or so)
great red spot
rotation curve=winding dilemma?
300000 KM/sec
weight
50. The larger bodies that formed early in teh solar nebula that were chemically differentiated
Sa spiral galaxy
rotation curve=winding dilemma?
planetesimal
tectonics of Venus