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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. IO
cosmic singularity
asteroid
MOONS: most geologically active
cosmic singularity
2. A distance measure determined by the shifting of a star against the background sky every 6 months.
quasar
Summer Solstice
Parsec
Electromagnetic Radiation: X-Ray
3. The assumption that the universe is isotropic (same in all directions) and homogeneous (Same everywhere throughout)
Interstellar Extinction
chemical differentiation
terrestrial planet
cosmological principle
4. 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)
Light Gathering Power
Blackbody
quasar
Parallax
5. Mercury
Disk
smallest diameter
Astronomical Unit
Spectral Lines
6. A spectrum of light with energy at only a few wavelengths.
interstellar dust
Open - flat - and closed.
Emission Spectrum
Roundest orbit
7. The projection of the Earth's equator onto the celestial sphere.
Pixel
critical density
Extrasolar Planet
Celestial Equator
8. A measure of the force of gravity on an object
Plank's Law
Heliocentric
weight
Synodic Day
9. That which is responsible for Jupiter's magnetic field
Electromagnetic Radiation
Liquid metallic hydrogen
Synodic Day
hottest surface
10. The apparent backward motion of a planet against the background of stars.
Light: travels like a wave - detected like a particle
Astronomical Unit
retrograde motion
bulge
11. Poitns of gravitational stability in the orbit of a planet
meteoriod
White Dwarf
Lagrangian Razor
Dark Matter
12. The place in the sky that the Earth's axis points toward (can be either north or south)
Neutron Star
Steady State Theory (Leads to Olber's Paradox)
Colestial Pole
quarks
13. The organization of clusters of galaxies into sheets and strings
Supercluster
solar nebula
Spectroscopic parallax
Coronal Loop
14. The most mass a white dwarf can have before collapsing to a neutron star
Population 1 vs Population 2 stars
Chandrasekhar Limit
The Big Bang Theory
Trojan asteroids
15. The rock that makes up the lunar highlands
Heliocentric
Occam's razor
density waves
anorthosite
16. Population 1- similar to the sun and 2% of elements are metal - Population 2- formed before gas was metal- only a fraction of mass is metal.
Maria
Focal Length
most eccentric orbit
Population 1 vs Population 2 stars
17. The high- temperatature outer layer of the sun
Corona
Titus-Bode Law
Heliocentric
Blackbody Curve
18. A massive variable star used to find distances to the galaxies or clusters that contain them.
density waves
highlands
Cepheid Variable
Sunspots
19. Ganymede
MOONS: largest size
MOONS: most geologically active
Yes - frozen at the poles- remains protected from the suns rays
Coldest surface
20. The amount an image is enlarged by a telescope
3 reasons we orbit satellites to observe universe
cosmic singularity
Planck time
Magnification
21. The oldest grouping of stars - found in the galaxy halo
Ground State
bulge
Globular Cluster
Absolute Magnitude
22. A subatomic particle with a negative charge. It creates light.
retrograde motion
scarp
Light Gathering Power
Electron
23. Neptune or uranus
Coldest surface
radio galaxy
Autumnal Equinox
The Big Bang Theory
24. Hot cells of gas that rise and fall in the hotosphere
Granules
fastest rotation
roche limit
condensation temperature
25. A collection of galaxies like the one the Milky Way belongs to
Flat - Remain Parallel - Exactly 1
CMB
Poor Cluster
Main Sequence Stars
26. Radiation emitted when charged particles spiral rapidly in a magnetic field. come off of jets from black holes.
synchrotron radiation
retrograde motion
MOONS: largest size
We don't know. It might be but does not have to be.
27. The rotation period of the Earth measured relative to the Sun.
Jupiters red spot
Synodic Day
Celestial Sphere
Liquid metallic hydrogen
28. The rotation of a star or planet at different speeds at its equator and poles
gravity
differential rotation
semimajor axis
molecular clouds
29. The distance between a lens and its focal plane
Perihelion
Electromagnetic Radiation: Visible Light
anorthosite
Focal Length
30. The class of all objects having high energy radiation coming from their nuclei. Active Galactic Nucleus- Blazars - Quasars - Radio and Emit synchrotron radiation
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.
tectonics of Mars
most eccentric orbit
AGN
31. A very distant - star-like object with huge - broad emission lines. Probably the nucleus of a distant active galaxy.
Synchrotron Rotation
opposition
quasar
shape and color of SPIRAL galaxies
32. VENUS
Black Hole
great red spot
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
Filament
33. 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.
MOONS: thickest atmosphere
Enke gap
radiation pressure
CMB
34. Large nebula consisting of very cold gas and dust
deferent
Flocculent spirals
Jovian Planets
Molecular Clouds
35. Venus
Roundest orbit
Corona
semimajor axis
Kirchhoff's Law
36. A location on an H-are Diagram where evolving stars pulsate
Instability strip
Plank's Law
open star clusters
Cosmic Microwave Background
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. A long-lived high-pressure bulge in Jupiter's southern hemisphere
great red spot
Flat - Remain Parallel - Exactly 1
Sa spiral galaxy
acceleration
39. A representation of the changes in color and brightness of an evolving protostar.
Convection
shape and color of ELLIPTICAL galaxies
Hyashi track
Population 1 vs Population 2 stars
40. A small round distribution of gas surrounding a dying star
Kirkwood gaps
Spectroscopy
Planetary Nebula
Kirkwood gaps
41. Jupiter
Largest diameter
Jupiters red spot
Light Curve
Terrestrial Planets
42. The mass of an object divided by its volume
deferent
density
matter dominated universe
Apollo asteroids
43. The science of measuring light energy by wavelength.
Spectroscopy
Parallax
Make up of the jovian planets
Electromagnetic Radiation
44. The sinking of denser elements to the center of a young molten planet
epicycle
chemical differentiation
Electromagnetic Radiation: Infrared
MOONS: largest size
45. 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 ________.
Atomic Number
Electromagnetic Radiation
density
Flat - Flat
46. Large bulge - tightly wound spiral arms - relatively few h2 regions and are smooth
Sa spiral galaxy
A family of radiant energy- includes light
Enke gap
Degeneracy
47. Earth
force
Most dense
SETI
Filament
48. Flattened spherical distribution of old stars with some young stars too. 'hub' of Milky way - stars orbit with solid body speeds. Elongated into bar shape
bulge
Galilean satellite
synchronous rotation
Reflector
49. The study of the universe as a whole.
Color Index
Stephen-Boltzman Law
cosmology
Pixel
50. What causes the zones and belts on jupiter and saturn?
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
Thermal Equilibrium
matter dominated universe
rotation curve = dark matter?