SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
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. Cold aggregates of gas - large and contain a huge amount of matter - so cold that molecules stick together to form molecules.
Dark Matter
shape and color of SPIRAL galaxies
molecular clouds
aphelion
2. The nuclei of very distant galaxies. Likely a manifestation of supermassive black holes
Sidereal Day
critical density
Bok Globule
Quasar
3. Hydrogen and helium (mainly)
Gravitational Lens
Make up of the jovian planets
synchrotron radiation
Degeneracy
4. The amount an image is enlarged by a telescope
Ganymede (Jupiter)
Magnification
accretion disk
OB Associations
5. A bright area of higher temperature that often proceeds the formation of sunspots.
Autumnal Equinox
Brown dwarf
supermassive black hole
Plague
6. If stars have diff orbital periods - than any arms formed by stars will wind into a tight spiral pattern (billion yrs or so)
Drake equation
rotation curve=winding dilemma?
Secondary Mirror
Extrasolar Planet
7. A large - irregularly shaped rocky object orbiting the sun mostly between mars and jupiter. Left-over planetesimals
asteroid
dark matter
Hubble constant
Parsec
8. Medium bulge - moderately would arms - arms have H2 regions in them and look sort of lumpy
MOONS: thickest atmosphere
Sb spiral galaxy
Superior planets
Asymptotic giant Branch Star
9. The family of radiant energy that includes light as a subset
Electromagnetic Radiation
Sa spiral galaxy
Coldest surface
quasar
10. 10 cm -> 1 mm
shape and color of ELLIPTICAL galaxies
Parallax
direct motion
Electromagnetic Radiation: Microwave
11. The slow wobble of the Earth on its rotation axis.
Precession
Hipparchus
Autumnal Equinox
greehouse effects
12. The apparent magnitude a star would have if it were at a distance of 10 parsecs.
It does not have to expand into anything. It might just be that the 3 dimensions of space are getting bigger. It may also be that our 3 spatial dimensions are expanding into higher dimensions if such things exist.
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.
molecular clouds
Absolute Magnitude
13. A point in the sky where meteors appear to come from during a shower
radiant
Plague
MOONS: largest size
Parallax
14. 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)
planetary nebula
Light Pollution
It does not have to expand into anything. It might just be that the 3 dimensions of space are getting bigger. It may also be that our 3 spatial dimensions are expanding into higher dimensions if such things exist.
Thickest atmosphere
15. An efficient - two-dimensional electronic light detector. Common in digital cameras - they revolutionized astronomical imaging
differential rotation
mass
Kirchhoff's Law
CCD
16. The powdered stone fragments that make up the lunar 'soil'
synchrotron radiation
Pulsar
regolith
Electromagnetic Radiation
17. All possible types of energy that can be emitted and absorbed by atoms.
aurora
Yes - frozen at the poles- remains protected from the suns rays
Electromagnetic Radiation
inferior planets
18. A galaxy sending out a stream of material from its nucleus
Main Sequence
Radio Galaxy
Sunspot cycle
Maria
19. The force of attraction between any two objects having mass
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
Resolving Power
gravity
Supernova (You can be my supernova girl)
20. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE
chondrite
Main Sequence
zone
Europa (Jupiters moon)
21. Ganymede
MOONS: largest size
deferent
radio galaxy
Meridian
22. A star that is in the process of forming. It glows from gravitational contraction
roche limit
fastest rotation
protostar
Extrasolar Planet
23. Stars fromt he Halo that have drifted into the disk. as earth zooms past them in a faster orbit they appear to be going backward very fast
Kirchhoff's Law
Oort Cloud
High Velocity Stars
Positive - Converge - Greater than 1
24. A planet that is farther from the sun than the Earth is
Superior planets
radio galaxy
Cepheid Variable
Roundest orbit
25. Dark areas on the sun that are cooler than the surrounding photosphere
Sunspots
Oort Cloud
MOONS: largest size
gravity
26. A quantity measuring the stability of the Earth's atmosphere
Seeing
Pulsar
Ammonia - methane - and water
Halo
27. In Ptolemy's geocentric solar system - the large circle on which a planet's epicycle moved around the Earth.
Oort Cloud
radiation dominated universe
Filament
deferent
28. The distance a moon can be from a planet before shattering from tidal forces
Objective Lens
roche limit
Superior planets
synchrotron radiation
29. Long - meandering cliff formed when a planet surface cools and shrinks
synchrotron radiation
Horizontal Branch Star
scarp
radiation dominated universe
30. A volume of space where few - if any - galaxies are located
Void
Cosmological Principle
asteroid
synchronous rotation
31. 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.
Jupiters red spot
White Dwarf
Eclipses of the Moons of Jupiter
Light Pollution
32. A change in the wavelength of light caused by a motion between the observer and light (or wave) source (blue shift if getting closer - red shift if moving away)
Doppler Shift
Light Gathering Power
Annular Eclipse
Bulge
33. Latin for 'cloud'. A word used to describe the collections of gas and dust in the Milky Way and other galaxies
H2 Regions
Ole Roemer
Nebula
Hubble constant
34. IO
MOONS: most geologically active
Apollo asteroids
Coldest surface
Seyfert galaxy
35. The point where a superior planet is as far away from the sun as it can be (as seen from the Earth)
Astronomical Unit
Resolving Power
Flocculent spirals
opposition
36. The organized effort to find life elsewhere in the universe. (Search for Extra-Terrestrial Intelligence)
SETI
Refractor
semimajor axis
White Dwarf
37. Large bulge - tightly wound spiral arms - relatively few h2 regions and are smooth
Seeing
Apparent Magnitude
Sa spiral galaxy
Lagrangian Razor
38. A fusion process in which a carbon atom transmutes to oxygen and back - creating a helium atom in the process
The Big Bang Theory
tectonics of Venus
CNO Cycle
general star population
39. A highly variable galaxy nucleus of which BL Lac is one. Their light is highly energetic and their spectra are featureless. (face on)
OB Associations
blazar
Coldest surface
fastest rotation
40. Moon in less than the angular diameter of the Sun.
contrast northern lowlands and the southern highlands of mars...
Annular Eclipse
Ground State
The Local Group
41. A planet that is closer to the sun than the earth
Parallax
Flare
Prominence
inferior planets
42. The apparent magnitude a star would have if it were at a distance of 10 parsecs.
Gamma ray bursts
Absolute Magnitude
Thickest atmosphere
cosmological principle
43. Galaxies whose nuclei emit jets of materil at high speeds. material comes from supermassive black holes
In an expanding universe all galaxies see all other galaxies that are not gravitationally bound to them receding away. This is what we see in the Hubble Law. We infer that the Hubble law also holds true for all other galaxies.
force
radio galaxy
Sunspot cycle
44. The telescope configuration that has the focus placed at the back of the primary mirror
Cassegrain Focus
CCD
Objective Lens
Chandrasekhar Limit
45. A planet that is farther from the sun than the Earth is
Enke gap
CNO Cycle
Superior planets
Liquid metallic hydrogen
46. Mercury - Venus - Earth - Mars
Terrestrial Planets
superclusters
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
tectonics of Venus
47. The opaque universe that existed for 300000 years after the Big Bang. (photons outnumbered nuclei by 1 billion to one - so less light)
superclusters
radiation dominated universe
Sunspot cycle
Neutron Star
48. 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)
Synchrotron Rotation
Flare
synchrotron radiation
Light: travels like a wave - detected like a particle
49. A high-pressure bulge in Neptune's southern hemisphere
CNO Cycle
great dark spots
inferior planets
fusion crust
50. An element of a highly efficient - two-dimensional electronic light detector
partile horizon
Sunspot cycle
Pixel
Precession