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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. The area behind a lens where images are resolved
Focal Plane
Colestial Pole
meteorite
Main Sequence
2. Clouds of low density gas often found glowing faintly on either side of an AGN.
Milky way Galaxy
radio lobe
Extrasolar Planet
meteor
3. A small spherical dark nebula
Hyashi track
White Dwarf
Bok Globule
Penumbra
4. Hot cells of gas that rise and fall in the hotosphere
Focal Plane
Sb spiral galaxy
radiant
Granules
5. Relativity predicts that nothing can travel faster than the speed of light in a vacuum - How can it move slower?
synchronous rotation
If it is in a denser medium - such as glass - it will move slower
mapping the structure of Milky Way disk
Focal Length
6. A point in the sky where meteors appear to come from during a shower
Make up of the jovian planets
radio lobe
radiant
Europa (Jupiters moon)
7. 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
MOONS: thickest atmosphere
Jupiters red spot
Asymptotic giant Branch Star
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.
8. The entity responsible for spiral arms in grand-design spiral galaxies
Synchrotron Rotation
shape and color of SPIRAL galaxies
Density Wave
Drake equation
9. 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.
nova
Objective Lens
terrestrial planet
force
10. In a FLAT UNIVERSE(our universe) - the curvature of space-time is ________. Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is _____.
Bulge
Seeing
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
Flat - Remain Parallel - Exactly 1
11. A bridge of material held in position above the solar surface. They can remain for hours even days
Colestial Pole
Prominence
density parameter
Zenith
12. Elliptical orbits that come inside orbit of the Earth.
Limb darkening
Enke gap
Apollo asteroids
Thickest atmosphere
13. A star that is in the process of forming. It glows from gravitational contraction
Heliocentric
protostar
radiant
Photon
14. A fusion process in which a carbon atom transmutes to oxygen and back - creating a helium atom in the process
Hyashi track
CNO Cycle
Blackbody Curve
great red spot
15. 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.
Spectroscopy
open star clusters
Nucleus
Meridian
16. Massive compact halo objects (MACHO) - weakly interacting massive particles (WIMPY's)
AGN
dark energy
cosmic fireball
Dark matter candidates
17. The number of protons in an atom.
CCD
Atomic Number
Color Index
Planetary Nebula
18. The amount an image is enlarged by a telescope
Ground State
contrast northern lowlands and the southern highlands of mars...
scarp
Magnification
19. 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)
shape and color of ELLIPTICAL galaxies
radiation dominated universe
Drake equation
Planck time
20. Old - pock marked - icy surface - interior is not differentiated - geologically dead - NOT ACTIVE SURFACE
Callisto (Jupiter)
chemical differentiation
resonance
Triple Alpha rocess
21. Any change in the speed or direction of an object's motion
inferior planets
acceleration
Gamma-ray Burst
Sunspot cycle
22. The measure of a variable star's apparent magnitude as it brightens and dims with time
era of recombination
matter dominated universe
Light Curve
Superior planets
23. A planet that is closer to the sun than the earth
molecular clouds
inferior planets
Vernal Equinox
Resolving Power
24. The equation that describes how matter equates with energy
Eclipses of the Moons of Jupiter
Celestial Equator
E=mc2
fastest rotation
25. A very distant - star-like object with huge - broad emission lines. Probably the nucleus of a distant active galaxy.
Parallax
aurora
Seeing
quasar
26. Light-flaky crust - convective currents cause it to wrinkle and bunch (1/5 of surface). uniform cratering suggests lack of weathering and tectonics. volcanoes are flat due to atmospheric pressure.
rotation curve=winding dilemma?
tectonics of Venus
Sidereal Day
The Big Bang Theory resolves Olber's Paradox
27. Venus
zone
How is winding dilemma solved?
shape and color of SPIRAL galaxies
Thickest atmosphere
28. When the Sun is farthest north of the celestial equator (about June 22)
Granules
CCD
Summer Solstice
Magnification
29. What causes the zones and belts on jupiter and saturn?
AGN
radiant
Zenith
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
30. Why does the earth have few craters while the moon has many?
quarks
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
reflection star clusters
molecular clouds
31. The law stating that hotter blackbodies look bluer than cooler blackbodies.
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32. A galaxy sending out a stream of material from its nucleus
Continuous Spectrum
Radio Galaxy
slowest rotation
Cosmic Microwave Background
33. A very dense - highly populated cluster of galaxies
Negative - Diverge - Less than 1
Chromosphere
standard candle
Rich Cluster
34. When the Sun moves from south to north across the celestial equator (about March 21)
Electromagnetic Radiation
Cosmological Principle
Parallax
Vernal Equinox
35. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE
Stephen-Boltzman Law
blazar
Corona
Europa (Jupiters moon)
36. Small moons that maintain the shape of rings around Saturn and Uranus
Occam's razor
deferent
Blackbody Curve
Shepherd satellite
37. The Big Bang says that the universe has not existed forever. It had a distinct beginning about 14 billion years ago called the 'Big Bang'. Therefore light from any object more than 14 billion light years away has not had time to reach us. The other p
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38. The rotation of a star or planet at different speeds at its equator and poles
differential rotation
Neutron Star
Kirkwood gaps
Occam's razor
39. The surface of the sun
Nova
Photosphere
Enke gap
Turn off Point
40. The larger bodies that formed early in teh solar nebula that were chemically differentiated
Interstellar Extinction
planetesimal
Thermonuclear Fusion
If it is in a denser medium - such as glass - it will move slower
41. A location on an H-are Diagram where evolving stars pulsate
Steady State Theory (Leads to Olber's Paradox)
aurora
Instability strip
Corona
42. Large bulge - tightly wound spiral arms - relatively few h2 regions and are smooth
Light Gathering Power
Planck time
Sa spiral galaxy
Electromagnetic Radiation: Microwave
43. An element of a highly efficient - two-dimensional electronic light detector
Pixel
300000 KM/sec
Apparent Magnitude
Bok Globule
44. The law that syas light energy from a blackbody increases as (temperature^4)
zone
Planck time
Stephen-Boltzman Law
H2 Regions
45. Heavier elements such as iron - silicon - magnesium - sulfer - nickel
Kirchhoff's Law
Shepherd satellite
Planetary Nebula
Make up of the terrestrial planets
46. A star that is in the process of forming. It glows from gravitational contraction
Most dense
protostar
The Big Bang Theory resolves Olber's Paradox
Seyfert galaxy
47. The lens in a telescope used to determine the magnification
Sc spiral galaxy
Eyepiece Lens
Thermal Equilibrium
Maria
48. A very low mass particle formed in solar fusion reactions that reacts only weakly with matter
Parsec
Electromagnetic Radiation
neutrino
Celestial Equator
49. The rock that makes up the lunar maria
fastest rotation
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
mare basalt
Penumbra
50. The measure of a variable star's apparent magnitude as it brightens and dims with time
Nebula
Emission Spectrum
chemical differentiation
Light Curve