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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. A telescope that uses mirrors to focus light
Nebula
Electromagnetic Radiation: Ultraviolet Light
Reflector
roche limit
2. 1-orbit aroudn the sun 2- are in hydrostatic equilibrium and 'mostly round' 3- have not cleared debris around its orbit 4- are not satellites
Dwarf planets
Hubble constant
Cassegrain Focus
Seyfert galaxy
3. Hot cells of gas that rise and fall in the hotosphere
Granules
highlands
Proton-proton chain
Plague
4. Arcs of increased mass concentration that slow stars and gas down as they orbit through which cause the formation of stars.
Metals
MOONS: thickest atmosphere
density waves
Vernal Equinox
5. Mercury
We don't know. It might be but does not have to be.
blazar
Dark Matter
thinnest atmosphere
6. Venus
Trojan asteroids
Roundest orbit
mare basalt
Ammonia - methane - and water
7. The entity responsible for spiral arms in grand-design spiral galaxies
Halo
Plague
Density Wave
smallest diameter
8. The instant of time after the Big Bang when space and time obtained their characteristics. (t=10^-43 sec when gravity freezes out-instant when gravity started existing as a separate force)
resonance
Vernal Equinox
Planck time
If it is in a denser medium - such as glass - it will move slower
9. A bright area of higher temperature that often proceeds the formation of sunspots.
Interstellar Extinction
Main Sequence Stars
Plague
AGN
10. What are the three possible geometries of the universe?
Open - flat - and closed.
opposition
Steady State Theory (Leads to Olber's Paradox)
Extrasolar Planet
11. The source of the force that is accelerating the expansion rate of the universe.
CMB
dark energy
Nova
Parallax
12. The 'edge' of the universe. Light beyond this has not reached us yet.
Differential Rotation
mapping the structure of Milky Way disk
partile horizon
most eccentric orbit
13. A spinning neutron star
Pulsar
Quasar
scarp
fewest moons
14. The mirror that determines the focus configuration of a reflector
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
Io (jupiters moon)
Refractor
Secondary Mirror
15. An element of a highly efficient - two-dimensional electronic light detector
Trojan asteroids
tectonics of Earth
Pixel
Supernova (You can be my supernova girl)
16. As open clusters age - they push gas away but dust remains this can reflect light giving the cluster a blue-ish color. also called reflection nebula
Extrasolar Planet
direct motion
reflection star clusters
matter dominated universe
17. The oldest part of the Milky Way
Halo
meteor
Planck time
accretion disk
18. Then the Sun moves from north to south across the celestial equator (about September 23)
Autumnal Equinox
Flat - Flat
Apparent Magnitude
Rich vs poor clusters
19. Places in the asteroid belt - caused by resonance with Jupiter - where there are no asteroids
Kirkwood gaps
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
Dark matter candidates
Dark Nebula
20. The process of acquiring material
accretion
MOONS: most geologically active
Active Optics
Density Wave
21. An efficient - two-dimensional electronic light detector. Common in digital cameras - they revolutionized astronomical imaging
Trojan asteroids
CCD
Bok Globule
Black Hole
22. The lens in a telescope used to determine the magnification
Titus-Bode Law
greehouse effects
Eyepiece Lens
Radio Galaxy
23. The distance between a lens and its focal plane
Plague
Make up of the jovian planets
How is winding dilemma solved?
Focal Length
24. A bright area of higher temperature that often proceeds the formation of sunspots.
Gravitational Lens
Apollo asteroids
Pulsar
Plague
25. A long-lived high-pressure bulge in Jupiter's southern hemisphere
Celestial Sphere
great red spot
nova
Astronomical Unit
26. The amount of density needed to stop the universe from expanding and to begin the big crunch represented by Pc
Emission Spectrum
Quasar
critical density
Cepheid Variable
27. 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.
Neutron Star
mapping the structure of Milky Way disk
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
Dwarf planets
28. 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
reflection star clusters
Neutron Star
Make up of the terrestrial planets
High Velocity Stars
29. A method of finding a star's distance from its absolute magnitude and spectral type or color.
Spectroscopic Parallax
accretion disk
Magnification
radio galaxy
30. Is there water on the moon?
aurora
Jovian Planets
difference between maria and highlands of the moon.
Yes - frozen at the poles- remains protected from the suns rays
31. The crust of a meteorite caused by its entry into Earth's atmosphere
fusion crust
Reflector
Triple Alpha rocess
Big Bang
32. A faint - remarkably uniform distribution of radiation in space
Cosmic Microwave Background
Continuous Spectrum
Brown dwarf
Magnification
33. An object that may remain after a star explodes
Supernova (You can be my supernova girl)
Dark Nebula
Neutron Star
Kirchhoff's Law
34. The act of removing an electron from an atom.
Ionization
scarp
cosmological red shift
CCD
35. The location in the Milky Way where stars orbit like a solid wheel
chondrite
Corona
Hubble constant
Bulge
36. 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)
weight
Ecliptic
Doppler Shift
gravity
37. The telescope configuration that has the focus placed at the back of the primary mirror
Negative - Diverge - Less than 1
SETI
rotation curve = dark matter?
Cassegrain Focus
38. A crystalline patter found in iron meteorites
Radio Galaxy
widmanstatten pattern
Kuiper belt
Synodic Day
39. The first rock-sized bodies that formed in the solar nebula from dust grains
plate tectonics
chondrite
roche limit
Synodic Day
40. A spinning neutron star
density waves
slowest rotation
thinnest atmosphere
Pulsar
41. The rock that makes up the lunar highlands
Apparent Magnitude
anorthosite
mass
deferent
42. When the Moon entirely blocks the Sun.
Magnification
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
Geocentric
Total Eclipse
43. 100 nm 10 nm
Self-Propogating Star Formation
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
deferent
Electromagnetic Radiation: Ultraviolet Light
44. The entity responsible for spiral arms in grand-design spiral galaxies
MOONS: thickest atmosphere
Density Wave
Cassini division
great red spot
45. Sa - Sb galaxies where two magnificent arms wind their way from nucleus out in a symmetrical manner.
Thickest atmosphere
cosmology
Grand design spirals
The Big Bang Theory
46. Is there water on the moon?
MOONS: most geologically active
Ganymede (Jupiter)
Yes - frozen at the poles- remains protected from the suns rays
Electromagnetic Radiation: Microwave
47. Long - meandering cliff formed when a planet surface cools and shrinks
supermassive black hole
Pixel
molecular clouds
scarp
48. Sc galaxies where star formation and destruction is so rapid that supernova explosions are mainly responsible for compressing gas to create new stars.
fastest rotation
radiation dominated universe
self-propagating star formation
Cassini division
49. A phenomenon seen when the Earth passes through the orbit of a burned out comet
differential rotation
thinnest atmosphere
Spectroscopy
meteor shower
50. The point where a superior planet is as far away from the sun as it can be (as seen from the Earth)
opposition
Heliocentric
molecular clouds
Annular Eclipse