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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. An evolved star - past the helium flash that is burning helium to carbon in it's cores
Supercluster
mare basalt
Horizontal Branch Star
Celestial Sphere
2. A small round distribution of gas surrounding a dying star
radio galaxy
Spectroscopic Parallax
Planetary Nebula
Ole Roemer
3. 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
Electron
Sunspot cycle
Galilean satellite
4. A galaxy emitting large amounts of energy at long wavelengths.
Rich Cluster
radio galaxy
supernova
Electromagnetic Radiation: Infrared
5. Heavier elements such as iron - silicon - magnesium - sulfer - nickel
Magnification
MOONS: thickest atmosphere
Make up of the terrestrial planets
meteor shower
6. What are the three possible geometries of the universe?
Open - flat - and closed.
direct motion
Proton-proton chain
Blackbody
7. 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
Spectroscopic parallax
acceleration
Radio Galaxy
radiant
8. A point in the sky where meteors appear to come from during a shower
radiant
tectonics of Earth
Callisto (Jupiter)
matter dominated universe
9. The mass of an object divided by its volume
density
Electron
Absorption Spectrum
Drake equation
10. A telescope that uses mirrors to focus light
contrast northern lowlands and the southern highlands of mars...
Photosphere
Precession
Reflector
11. The elementary building blocks from which protons and neutrons are formed.
quarks
Grand design spirals
radio lobe
radio galaxy
12. Centered on the Earth
mass
Refractor
Geocentric
Make up of the jovian planets
13. Mercury and venus
greehouse effects
fewest moons
Electromagnetic Radiation: Radio
Thickest atmosphere
14. What is the universe expanding into?
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.
Electromagnetic Radiation: Ultraviolet Light
chondrite
Blackbody Curve
15. The oldest part of the Milky Way
fusion crust
Total Eclipse
Halo
solar nebula
16. The distance a moon can be from a planet before shattering from tidal forces
cosmological red shift
Milky way Galaxy
aurora
roche limit
17. When massive objects bend space and time enough to create multiple images of an object located behind them
Wein's Law
Spectroscopic Parallax
Gravitational Lens
Colestial Pole
18. In Ptolemy's geocentric solar system - the large circle on which a planet's epicycle moved around the Earth.
deferent
tectonics of Venus
density
Ganymede (Jupiter)
19. Ganymede and Titan
The Big Bang Theory resolves Olber's Paradox
MOONS: larger than mercury
mapping the structure of Milky Way disk
weight
20. The point directly overhead.
widmanstatten pattern
Zenith
Kuiper belt
anorthosite
21. The class of all objects having high energy radiation coming from their nuclei. Active Galactic Nucleus- Blazars - Quasars - Radio and Emit synchrotron radiation
Coronal Loop
AGN
Extrasolar Planet
Sidereal Day
22. Jupiter
most moons
Make up of the jovian planets
protostar
nucleus
23. An element of a highly efficient - two-dimensional electronic light detector
conjunction
Pixel
radio galaxy
anorthosite
24. Large bulge - tightly wound spiral arms - relatively few h2 regions and are smooth
Sa spiral galaxy
MOONS: roundest shape
Flare
Sidereal Day
25. A word meaning 'the same everywhere throughout.'
homogeneous
Sunspots
Coronal Loop
acceleration
26. Star speed at outer edge of galaxy should begin to diminish - but they dont so we guess that this means there is increasing force (aka dark matter)
Lagrangian Razor
Flare
Big Bang
rotation curve = dark matter?
27. A quantity measuring the stability of the Earth's atmosphere
Seeing
planetary nebula
Europa (Jupiters moon)
mare basalt
28. A star that erratically and explosively brightens and dims
zone
Nova
Geocentric
planetary nebula
29. Half of the longest diameter across an ellipse
If it is in a denser medium - such as glass - it will move slower
plate tectonics
semimajor axis
Sc spiral galaxy
30. The location in the Milky Way where stars orbit like a solid wheel
Bulge
open star clusters
Asymptotic giant Branch Star
aphelion
31. A small chunk of rock in space
meteoriod
Sa spiral galaxy
aurora
Focal Plane
32. Is there water on the moon?
Ole Roemer
Pixel
partile horizon
Yes - frozen at the poles- remains protected from the suns rays
33. Mercury
Focal Plane
thinnest atmosphere
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
radio galaxy
34. The science of measuring light energy by wavelength.
cosmological principle
Kirchhoff's Law
Spectroscopy
Halo
35. In an OPEN UNIVERSE - the curvature of space-time is ____ - Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is____.
Negative - Diverge - Less than 1
Synodic Day
cosmological red shift
molecular clouds
36. Jupiter
Main Sequence Stars
fastest rotation
Electromagnetic Radiation
Kuiper belt
37. Matter so dense that even light cannot escape its gravity
Black Hole
self-propagating star formation
Big Bang
Ganymede (Jupiter)
38. 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.
open star clusters
Supercluster
Void
tectonics of Mars
39. A particle of light
dark matter
Hydrostatic Equilibrium
Photon
Focal Plane
40. The science of measuring the apparent magnitudes of stars by imaging them through different filters.
Photometry
conjunction
Neutron Star
Ground State
41. The era when the ratio of matter to energy greatly favored matter. (verses radiation dominated universe where it was opaque. Matter is now dominated by gravity not photons)
reflection star clusters
matter dominated universe
Terrestrial Planets
self-propagating star formation
42. The assumption that the universe is isotropic (same in all directions) and homogeneous (Same everywhere throughout)
Make up of the terrestrial planets
Molecular Clouds
cosmological principle
Ground State
43. A telescope that uses lenses to focus light
Molecular Clouds
Dark Nebula
Refractor
quasar
44. The oldest part of the Milky Way
Halo
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
Summer Solstice
Open Cluster
45. A prominence seen against the disk of the sun
Light Gathering Power
nucleus
Filament
Celestial Equator
46. When the Moon entirely blocks the Sun.
Thermonuclear Fusion
Total Eclipse
Gamma-ray Burst
quasar
47. Highlands: rocks are made of lighter anorthosite (similar to old earth rocks) Maria: rocks made of heavy mare basalt (volcanic rock) everywhere else is loose regolith created by meteoric impact.
difference between maria and highlands of the moon.
fewest moons
Spectroscopy
Void
48. A subatomic particle with a negative charge. It creates light.
Ganymede (Jupiter)
Electron
differential rotation
Umbra
49. The equation that describes how matter equates with energy
fusion crust
Objective Lens
E=mc2
Electromagnetic Radiation
50. A bright area of higher temperature that often proceeds the formation of sunspots.
Plague
Triple Alpha rocess
Gamma-ray Burst
Molecular Clouds