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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. In Ptolemy's geocentric solar system - the small circle on which a planet moved.
MOONS: most geologically active
The Big Bang Theory
Electromagnetic Radiation: X-Ray
epicycle
2. Sa - Sb galaxies where two magnificent arms wind their way from nucleus out in a symmetrical manner.
Thickest atmosphere
Electron
Grand design spirals
The Local Group
3. Thick rigid crust - no longer has plate tectonics but still has convective hot spots that create earth-like volcanoes except that last for billions of years because of lack of tectonics.
Blackbody Curve
Coronal Loop
tectonics of Mars
cosmic fireball
4. 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
Geocentric
greatest elongation
resonance
5. The final end state of a high mass star. .An entity for which gravity has completely overwhelmed all other forces of nature.
Jupiters red spot
Extrasolar Planet
Lagrangian Razor
Black Hole
6. An object that may remain after a star explodes
Neutron Star
Open - flat - and closed.
bulge
Ganymede (Jupiter)
7. A highly variable galaxy nucleus of which BL Lac is one. Their light is highly energetic and their spectra are featureless. (face on)
shape and color of ELLIPTICAL galaxies
most moons
slowest rotation
blazar
8. Jupiter
Coldest surface
Molecular Clouds
E=mc2
most moons
9. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder
neutrino
A family of radiant energy- includes light
isotropic
shape and color of ELLIPTICAL galaxies
10. Elliptical orbits that come inside orbit of the Earth.
MOONS: larger than mercury
Apollo asteroids
Celestial Equator
High Velocity Stars
11. The law stating that hotter blackbodies look bluer than cooler blackbodies.
12. Medium bulge - moderately would arms - arms have H2 regions in them and look sort of lumpy
Spectroscopic Parallax
scarp
Magnification
Sb spiral galaxy
13. A term referring to Earth-like planets
Synchrotron Rotation
terrestrial planet
Supernova (You can be my supernova girl)
dark energy
14. The science of measuring light energy by wavelength.
CNO Cycle
Spectroscopy
most moons
slowest rotation
15. A distance measure determined by the shifting of a star against the background sky every 6 months.
cosmic fireball
Meridian
Parsec
Ole Roemer
16. Ganymede
Blackbody Curve
MOONS: largest size
Halo
Rich vs poor clusters
17. A particle of light
Photon
Focal Length
Superior planets
Stephen-Boltzman Law
18. A quantity measuring the stability of the Earth's atmosphere
Density Wave
cosmic fireball
Seeing
Meridian
19. Matter so dense that even light cannot escape its gravity
Hipparchus
Black Hole
The Big Bang Theory
tectonics of Venus
20. Sulfurous volcanoes - pools of liquid sulfur - surface resembles cheese pizza ACTIVE SURFACE
mapping the structure of Milky Way disk
Io (jupiters moon)
Interstellar Extinction
plate tectonics
21. The sinking of denser elements to the center of a young molten planet
Emission Spectrum
chemical differentiation
Milky way Galaxy
Granules
22. Matter so dense that even light cannot escape its gravity
Corona
CMB
H-are Diagram
Black Hole
23. Material that shoots rapidly out into space. Flares cause Auroras
Gamma-ray Burst
Inverse Square Law
Prominence
Flare
24. A star that has become a red giant for the second and final time. It is burning helium to carbon in a shell surrounding the core
Gamma-ray Burst
retrograde motion
Asymptotic giant Branch Star
Quasar
25. Extends to a distance of 50000AU. Same objects as in the Kuiper belt-when they fall in toward the sun they become comets. Debris from comets hitting the Earths atmosphere cause meteor showers.
Refractor
interstellar dust
Radiative Diffusion
Oort Cloud
26. Collections of young - hot stars
protostar
OB Associations
rotation curve=winding dilemma?
Hipparchus
27. Finding a star's absolute magnitude from it's placement on an HR diagram. After finding the absolute magnitude - we measure the apparent magnitude - for a distance modulus and use this to find the distance. This method is good for finding distances t
Cassegrain Focus
epicycle
Instability strip
Spectroscopic parallax
28. A word meaning 'the same in all directions.'
quarks
isotropic
Stephen-Boltzman Law
Spectroscopic Parallax
29. Saturn
least dense
widmanstatten pattern
Interstellar Extinction
3 reasons we orbit satellites to observe universe
30. Mercury
most eccentric orbit
Kirkwood gaps
Hipparchus
cosmological red shift
31. A measure of the force of gravity on an object
weight
chemical differentiation
direct motion
radiation dominated universe
32. 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.
aphelion
quasar
contrast northern lowlands and the southern highlands of mars...
The Big Bang Theory resolves Olber's Paradox
33. The place in the sky that the Earth's axis points toward (can be either north or south)
Colestial Pole
Thermonuclear Fusion
cosmological red shift
chemical differentiation
34. The process that powers the sun and hydrogen bombs
Electromagnetic Radiation
inferior planets
Thermonuclear Fusion
Liquid metallic hydrogen
35. Earth
quarks
Cassegrain Focus
anorthosite
Most dense
36. The high- temperatature outer layer of the sun
Corona
Kuiper belt
Thickest atmosphere
meteorite
37. The entity responsible for spiral arms in grand-design spiral galaxies
H-are Diagram
Density Wave
Electron
Molecular Clouds
38. In Ptolemy's geocentric solar system - the small circle on which a planet moved.
epicycle
fastest rotation
Sb spiral galaxy
Open - flat - and closed.
39. The ratio of the actual density of the universe to the critical density. (actual density divided by the critical density
Summer Solstice
Electromagnetic Radiation: Visible Light
density parameter
Magnification
40. A spread of light with an uninterrupted wavelength distribution of energy.
Eclipses of the Moons of Jupiter
great dark spots
density waves
Continuous Spectrum
41. What do we think the actual fate of the universe will be and why do we think this?
scarp
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.
tectonics of Venus
jovian
42. A galaxy sending out a stream of material from its nucleus
thinnest atmosphere
300000 KM/sec
fewest moons
Radio Galaxy
43. Mercury
Umbra
Light-Year
smallest diameter
cosmic fireball
44. The mix of pure photon energy that emerged at the start of the universe.
Focal Length
cosmic fireball
contrast northern lowlands and the southern highlands of mars...
radio galaxy
45. A star that blows itself apart
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
Supernova (You can be my supernova girl)
aurora
Perihelion
46. A measure of the ability of a telescope to see fine detail
Ground State
Resolving Power
evidence of water on mars
Cassini division
47. The oldest grouping of stars - found in the galaxy halo
Spectroscopic Parallax
Interstellar Extinction
radio lobe
Globular Cluster
48. A method of finding a star's distance from its absolute magnitude and spectral type or color.
Spectroscopic Parallax
Supernova (You can be my supernova girl)
shape and color of SPIRAL galaxies
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.
49. 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.
Light-Year
Main Sequence
A family of radiant energy- includes light
Cosmological Principle
50. A very low mass particle formed in solar fusion reactions that reacts only weakly with matter
Light: travels like a wave - detected like a particle
most eccentric orbit
neutrino
cosmology