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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 force of attraction between any two objects having mass
Photon
Hubble constant
Spectroscopic parallax
gravity
2. A collection of comets in the plane of the solar system - located beyond the orbit of Pluto
Kuiper belt
Penumbra
fastest rotation
fusion crust
3. A measure of the force of gravity on an object
Bulge
weight
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
HII Region
4. A volume of space where few - if any - galaxies are located
Void
Apparent Magnitude
Big Bang
Radiative Diffusion
5. A planet that is farther from the sun than the Earth is
Focal Plane
Superior planets
Prominence
Cepheid variables
6. The point where an inferior planet is as far away from the sun as it can be (as seen from the Earth)
Eyepiece Lens
Continuous Spectrum
greatest elongation
MOONS: larger than mercury
7. Where is the center of the expansion
Olber's paradox
Nowhere visible to us. If there are higher dimension then the center would be visible to someone who lives in one. If there are no higher dimensions then the center does not exist.
synchrotron radiation
Chandrasekhar Limit
8. A phenomenon seen when the Earth passes through the orbit of a burned out comet
meteor shower
Cosmic Microwave Background (CMB)
Eyepiece Lens
protostar
9. Light scattered through the atmosphere that degrades astronomical images
Light Pollution
Prominence
Terrestrial Planets
Radio Galaxy
10. The final end state of a high mass star. .An entity for which gravity has completely overwhelmed all other forces of nature.
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
Main Sequence
Plank's Law
Black Hole
11. 100 nm 10 nm
Electromagnetic Radiation: Ultraviolet Light
Pixel
protostar
shape and color of ELLIPTICAL galaxies
12. Sulfurous volcanoes - pools of liquid sulfur - surface resembles cheese pizza ACTIVE SURFACE
Io (jupiters moon)
Annular Eclipse
Roundest orbit
Positive - Converge - Greater than 1
13. Centered on the sun.
Black Hole
supermassive black hole
Halo
Heliocentric
14. Orbit in Jupiters orbit
If it is in a denser medium - such as glass - it will move slower
Perihelion
Trojan asteroids
Nowhere visible to us. If there are higher dimension then the center would be visible to someone who lives in one. If there are no higher dimensions then the center does not exist.
15. The organization of clusters of galaxies into sheets and strings
Total Eclipse
Limb darkening
Supercluster
Thickest atmosphere
16. Consists of old red stars in slow orbits that plunge through disk and bulge. about 1% are old - round globular clusters.
mapping the structure of Milky Way disk
Hydrostatic Equilibrium
Halo
Chromosphere
17. Small moons that maintain the shape of rings around Saturn and Uranus
Make up of the terrestrial planets
Europa (Jupiters moon)
MOONS: largest size
Shepherd satellite
18. The process that powers the sun and hydrogen bombs
Active Optics
Roundest orbit
Eyepiece Lens
Thermonuclear Fusion
19. The Big Bang was not an explosion of matter into empty space - like the explosion of a bomb. Instead - it was an emergence of space and time filled with pure energy where before none of this was present. The point from which is emerged is called the
The Big Bang Theory
Summer Solstice
synchrotron radiation
chemical differentiation
20. Rich= dense crowded cores of galaxies - poor= few members and a looser organization of galaxies
Rich vs poor clusters
Spectroscopic Parallax
Primary Mirror
Ground State
21. Material that shoots rapidly out into space. Flares cause Auroras
Flare
accretion
High Velocity Stars
anorthosite
22. Jupiter - Saturn - Uranus - Neptune
Jovian Planets
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
nova
Milky way Galaxy
23. 1. We see rapid movements or high energy radiation coming at some level from the nuclei of nearly every galaxy we have looked at. 2. We suspect that the creation of these supermassive black holes is part of the galaxy formation process.
Terrestrial Planets
thinnest atmosphere
Spectroscopy
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
24. Disk dust grains are made of all the elements that are not in gaseous form in space which blocks starlight and causes interstellar extinction
zone
thinnest atmosphere
interstellar dust
Coldest surface
25. The oldest terrain on the moon
highlands
Photosphere
Spectroscopic parallax
rotation curve = dark matter?
26. A perfect absorber and radiator of electromagnetic radiation.
Kuiper belt
Blackbody
Perihelion
blazar
27. Large bulge - tightly wound spiral arms - relatively few h2 regions and are smooth
Sa spiral galaxy
Light: travels like a wave - detected like a particle
Kirkwood gaps
Spectroscopic parallax
28. Mercury - Venus - Earth - Mars
Terrestrial Planets
general star population
Asymptotic giant Branch Star
differential rotation
29. 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 _____.
Flat - Remain Parallel - Exactly 1
Bulge
synchrotron radiation
Open - flat - and closed.
30. The dark - relativley smooth areas on the moon; Latin for sea
Emission Spectrum
tectonics of Earth
Maria
Umbra
31. Jupiter
Extrasolar Planet
Largest diameter
Ole Roemer
least dense
32. 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.
standard candle
Ecliptic
Focal Length
33. The larger bodies that formed early in teh solar nebula that were chemically differentiated
Eyepiece Lens
Thermal Equilibrium
Spectroscopic Parallax
planetesimal
34. A technique using computer-controlled mirrors to sharpen images distorted by the atmosphere
greehouse effects
Light Curve
Active Optics
great dark spots
35. The mass of an object divided by its volume
density
Penumbra
quasar
most moons
36. A galaxy emitting large amounts of energy at long wavelengths.
radio galaxy
self-propagating star formation
Negative - Diverge - Less than 1
Plank's Law
37. The faint glow of light left over from the Big Bang. cosmic microwave background are the photons that remain after the big bang that have not turned into matter.
CMB
Light Curve
self-propagating star formation
Blackbody
38. A faint - remarkably uniform distribution of radiation in space
Main Sequence Stars
Light-Year
Jupiters red spot
Cosmic Microwave Background
39. A term referring to Jupiter-like planets
Electromagnetic Radiation
Interstellar Extinction
Parallax
jovian
40. Atmosphere blocks high energy wavelengths - atmosphere blurs optical radiation - atmosphere absorbs some radiation at all wavelengths even when it gets through.
Photon
3 reasons we orbit satellites to observe universe
Magnification
reflection star clusters
41. Cold aggregates of gas - large and contain a huge amount of matter - so cold that molecules stick together to form molecules.
Electromagnetic Radiation: Radio
rotation curve = dark matter?
molecular clouds
Cepheid Variable
42. Titan
Spectroscopic Parallax
Light Gathering Power
Plague
MOONS: thickest atmosphere
43. The law that describes the blackbody curve - and let to quantum mechanics.
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44. The 'edge' of the universe. Light beyond this has not reached us yet.
partile horizon
Callisto (Jupiter)
slowest rotation
meteor shower
45. 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.
Flocculent spirals
Magnification
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
Cosmic Microwave Background (CMB)
46. A toroidal or donut-shaped collection of material attracted to a central body like a star or black hole. Dust around an object
accretion disk
Kirchhoff's Law
If it is in a denser medium - such as glass - it will move slower
Zenith
47. A term referring to Earth-like planets
Light Curve
terrestrial planet
Focal Plane
great red spot
48. A particle of light.
Prominence
Photon
Limb darkening
Doppler Shift
49. The time when the universe cooled sufficiently for atoms to exist. radiation dominated= first 300000 years - THEN era of recombination turns into matter dominated for next.
Synodic Day
era of recombination
Oort Cloud
aurora
50. 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.
Hubble constant
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.
contrast northern lowlands and the southern highlands of mars...
Annular Eclipse