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Test your basic knowledge |
Cosmology
Start Test
Study First
Subject
:
science
Instructions:
Answer 50 questions in 15 minutes.
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study here
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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. Jupiter - Saturn - Uranus - Neptune
Stephen-Boltzman Law
Proton-proton chain
Jovian Planets
mapping the structure of Milky Way disk
2. The organized effort to find life elsewhere in the universe. (Search for Extra-Terrestrial Intelligence)
MOONS: thickest atmosphere
aphelion
SETI
Asymptotic giant Branch Star
3. Stars orvits do not define the spiral patterns - instead they are density waves that move at slower speeds (arms are defined by young O and B stars and gas clouds)
How is winding dilemma solved?
Light Curve
Coldest surface
direct motion
4. Light-colored high-pressure bands in Jupiter's atmosphere
anorthosite
weight
zone
Plank's Law
5. The class of all objects having high energy radiation coming from their nuclei. Active Galactic Nucleus- Blazars - Quasars - Radio and Emit synchrotron radiation
radiant
Poor Cluster
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.
AGN
6. Rich= dense crowded cores of galaxies - poor= few members and a looser organization of galaxies
Cosmological Principle
radiation dominated universe
Cassini division
Rich vs poor clusters
7. Mercury and venus
fewest moons
zone
Sidereal Day
Triple Alpha rocess
8. The law that describes the blackbody curve - and let to quantum mechanics.
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9. 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
High Velocity Stars
Doppler Shift
Perihelion
terrestrial planet
10. That which is responsible for Jupiter's magnetic field
Liquid metallic hydrogen
MOONS: largest size
High Velocity Stars
Synchrotron Rotation
11. The oldest part of the Milky Way
Halo
Radio Galaxy
Steady State Theory (Leads to Olber's Paradox)
Electromagnetic Radiation: Visible Light
12. A technique using computer-controlled mirrors to sharpen images distorted by the atmosphere
MOONS: most geologically active
Active Optics
Brown dwarf
Lagrangian Razor
13. A faint - remarkably uniform distribution of radiation in space
self-propagating star formation
Cosmic Microwave Background
belt
Galilean satellite
14. The state of having a balance between inward and outard pressures in a gas--the inward force from gravity is balanced by the outward force from heat.
Summer Solstice
Jupiters red spot
Open - flat - and closed.
Hydrostatic Equilibrium
15. The nuclei of very distant galaxies. Likely a manifestation of supermassive black holes
Planck time
Nebula
H-are Diagram
Quasar
16. Mercury and venus
fewest moons
Planetary Nebula
Light: travels like a wave - detected like a particle
dark matter
17. Moon in less than the angular diameter of the Sun.
Triple Alpha rocess
Nebula
highlands
Annular Eclipse
18. The organization of clusters of galaxies into sheets and strings
White Dwarf
Supercluster
Umbra
shape and color of ELLIPTICAL galaxies
19. A crystalline patter found in iron meteorites
widmanstatten pattern
Halo
Electromagnetic Radiation: Radio
coma
20. A very low mass particle formed in solar fusion reactions that reacts only weakly with matter
cosmological red shift
Photon
Shepherd satellite
neutrino
21. The act of removing an electron from an atom.
roche limit
neutrino
Europa (Jupiters moon)
Ionization
22. An entity that is likely in the nucleus of most - if not all - galaxies.
mare basalt
Eclipses of the Moons of Jupiter
Steady State Theory (Leads to Olber's Paradox)
supermassive black hole
23. An energetic event taking place in the early universe
Make up of the terrestrial planets
Trojan asteroids
Emission Spectrum
Gamma-ray Burst
24. A planet that is farther from the sun than the Earth is
Terrestrial Planets
least dense
Superior planets
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
25. When particles are compressed to an unnatural state where their pressure is not related to their temperature
Kirchhoff's Law
Degeneracy
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
Steady State Theory (Leads to Olber's Paradox)
26. Dark - reddish - low-pressure bands in Jupiter's atmosphere
Drake equation
disk
belt
acceleration
27. The family of radiant energy that includes light as a subset
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
Electromagnetic Radiation
fewest moons
Brown dwarf
28. A star that is in the process of forming. It glows from gravitational contraction
dark matter
matter dominated universe
protostar
radio lobe
29. Cold aggregates of gas - large and contain a huge amount of matter - so cold that molecules stick together to form molecules.
molecular clouds
Ionization
differential rotation
Cassini division
30. Small bulges - loosely wound - massive arms - arms have many H2 regions and look very lumpy
Sc spiral galaxy
E=mc2
Dark Matter
Ganymede (Jupiter)
31. Theory virtually demands that the geometry of the universe be ______. Results of measuring lumps in the cosmic background radiation indicate that the universe geometry is ________.
Flare
Flat - Flat
Spectroscopy
Rich Cluster
32. Distance from sun to nucleus- 8 kiloparsecs (26000 LY) - diameter of Milky way- 150000 LY - length for sun to orbit once around milky way- 250 million years
Enke gap
Nebula
Milky way Galaxy
Objective Lens
33. A term referring to Earth-like planets
least dense
Hubble constant
Electromagnetic Radiation: Radio
terrestrial planet
34. Distribution of dust (tells us disk is thin) - find distances to O&B stars and H2 regions (arms are sights of star formation and OB stars live and die at location of birth) -Milky way has four arms. Sun is in spur apart from arms.
Winter Solstice
mapping the structure of Milky Way disk
Superior planets
evidence of water on mars
35. The location of a supermassive black hole
Apollo asteroids
condensation temperature
opposition
Nucleus
36. The point where an inferior planet is as far away from the sun as it can be (as seen from the Earth)
greatest elongation
Celestial Equator
accretion
Oort Cloud
37. 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)
planetary nebula
Red Giant
quasar
Absorption Spectrum
38. In Ptolemy's geocentric solar system - the small circle on which a planet moved.
Liquid metallic hydrogen
retrograde motion
epicycle
Ground State
39. Mercury - Venus - Earth - Mars
Summer Solstice
chemical differentiation
Electron
Terrestrial Planets
40. Disk dust grains are made of all the elements that are not in gaseous form in space which blocks starlight and causes interstellar extinction
Eyepiece Lens
Self-Propogating Star Formation
interstellar dust
Coronal Loop
41. The crust of a meteorite caused by its entry into Earth's atmosphere
differential rotation
fusion crust
Annular Eclipse
Dark Nebula
42. A spread of light with an uninterrupted wavelength distribution of energy.
Wein's Law
Continuous Spectrum
Chromosphere
Light Gathering Power
43. The average distance between the Earth and the Sun (=1.5 x10^8km)
Yes - frozen at the poles- remains protected from the suns rays
planetesimal
Astronomical Unit
condensation temperature
44. An efficient - two-dimensional electronic light detector. Common in digital cameras - they revolutionized astronomical imaging
tectonics of Mars
MOONS: largest size
Atomic Number
CCD
45. A star that erratically and explosively brightens and dims
quasar
Flocculent spirals
Nova
Chandrasekhar Limit
46. A large and bright but cool star.
great dark spots
Red Giant
fastest rotation
Winter Solstice
47. 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
Umbra
hottest surface
The Big Bang Theory
Olber's paradox
48. When one side of a body always faces the planet it revolves around
synchronous rotation
Supernova (You can be my supernova girl)
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
Coronal Loop
49. The rotation period of the Earth measured relative to the stars.
quasar
Sidereal Day
Asymptotic giant Branch Star
cosmological red shift
50. The projection of the Earth's equator onto the celestial sphere.
Celestial Equator
slowest rotation
Nova
shape and color of SPIRAL galaxies
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