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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 location of a supermassive black hole
HII Region
Nucleus
Black Hole
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
2. Small compact stars called white dwarfs can have material deposited on their surfaces. In time material heats up and explodes in surface nuclear reaction- star brightens - settles - repeats.
meteoriod
Triple Alpha rocess
nova
Active Optics
3. 10 cm -> 1 mm
Synchrotron Rotation
Electromagnetic Radiation: Microwave
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
Terrestrial Planets
4. Extends to a distance of 50000AU. Same objects as in the Kuiper belt-when they fall in toward the sun they become comets. Debris from comets hitting the Earths atmosphere cause meteor showers.
Oort Cloud
High Velocity Stars
radio lobe
Atomic Number
5. Atmosphere blocks high energy wavelengths - atmosphere blurs optical radiation - atmosphere absorbs some radiation at all wavelengths even when it gets through.
Light: travels like a wave - detected like a particle
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
tectonics of Mars
3 reasons we orbit satellites to observe universe
6. Large nebula consisting of very cold gas and dust
superclusters
Molecular Clouds
Hubble law
Supernova (You can be my supernova girl)
7. The number of protons in an atom.
quarks
Dark Nebula
Atomic Number
MOONS: most geologically active
8. Matter that reveals itself only through its gravitational attraction.
MOONS: larger than mercury
dark matter
A family of radiant energy- includes light
Ganymede (Jupiter)
9. The science of measuring the apparent magnitudes of stars by imaging them through different filters.
Photometry
Umbra
Superior planets
Electromagnetic Radiation
10. Places in the asteroid belt - caused by resonance with Jupiter - where there are no asteroids
Jupiters red spot
H-are Diagram
Convection
Kirkwood gaps
11. A particle of light.
Photon
bulge
Light Gathering Power
We don't know. It might be but does not have to be.
12. The gap etween saturn's A and B rings
Kuiper belt
Halo
slowest rotation
Cassini division
13. The mirror that determines the focus configuration of a reflector
neutrino
Color Index
fewest moons
Secondary Mirror
14. An evolved star - past the helium flash that is burning helium to carbon in it's cores
Thermonuclear Fusion
Horizontal Branch Star
Ole Roemer
Focal Length
15. What is the universe expanding into?
Electromagnetic Radiation: Gamma Ray
Apollo asteroids
Dark matter candidates
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.
16. Mercury - Venus - Earth - Mars
interstellar dust
radio galaxy
Sunspots
Terrestrial Planets
17. Saturn
mapping the structure of Milky Way disk
Precession
least dense
Light: travels like a wave - detected like a particle
18. The north-south line passing directly overhead through the zenith.
Light Gathering Power
Limb darkening
Meridian
Liquid metallic hydrogen
19. Clouds of low density gas often found glowing faintly on either side of an AGN.
Energy Level
Gravitational Lens
Focal Length
radio lobe
20. Galaxies whose nuclei emit jets of materil at high speeds. material comes from supermassive black holes
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.
radio galaxy
density waves
E=mc2
21. N=are*Fp(Ne)(Fl)(Fi)(Fc)(L) N: number of civilizations possible to communicate with are*: rate solar-like stars are created Fp: fraction of stars with planets Ne: number of planets like ours Fl: fraction of planets with life Fi: intelligent life Fc:
Wein's Law
Drake equation
chemical differentiation
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
22. A telescope that uses mirrors to focus light
Magnification
Reflector
Annular Eclipse
greatest elongation
23. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder
Disk
Thermonuclear Fusion
shape and color of ELLIPTICAL galaxies
Magnification
24. When one side of a body always faces the planet it revolves around
shape and color of SPIRAL galaxies
era of recombination
If it is in a denser medium - such as glass - it will move slower
synchronous rotation
25. The rotation period of the Earth measured relative to the Sun.
molecular clouds
Synodic Day
Celestial Equator
plate tectonics
26. A repeated - periodic push or pull capable of summing into a larger push or pull
Callisto (Jupiter)
resonance
Ganymede (Jupiter)
Annular Eclipse
27. The final end state of an intermediate to high mass star. An entity in which all the electrons have been pushed into the protons.
Neutron Star
roche limit
synchronous rotation
Gamma ray bursts
28. The larger bodies that formed early in teh solar nebula that were chemically differentiated
planetesimal
Flare
terrestrial planet
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
29. A phenomenon seen when the Earth passes through the orbit of a burned out comet
Umbra
meteor shower
Objective Lens
Meridian
30. The trapping of heat by carbon dioxide or other gases in the Earth's atmosphere.
Wein's Law
greehouse effects
Red Giant
Lagrangian Razor
31. The ratio of the actual density of the universe to the critical density. (actual density divided by the critical density
Nucleus
difference between maria and highlands of the moon.
density parameter
synchrotron radiation
32. A collection of galaxies like the one the Milky Way belongs to
Poor Cluster
Light-Year
If it is in a denser medium - such as glass - it will move slower
cosmology
33. When the Sun is farthest north of the celestial equator (about June 22)
standard candle
weight
Ionization
Summer Solstice
34. The rotation of a star or planet at different speeds at its equator and poles
Electromagnetic Radiation: X-Ray
Electromagnetic Radiation
differential rotation
Make up of the jovian planets
35. The point directly overhead.
least dense
Electromagnetic Radiation: X-Ray
Zenith
Heliocentric
36. Is there water on the moon?
Yes - frozen at the poles- remains protected from the suns rays
general star population
Galilean satellite
Pixel
37. What is the universe expanding into?
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
Continuous Spectrum
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.
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
38. A measure of the ability of a telescope to see fine detail
Triple Alpha rocess
general star population
Titus-Bode Law
Resolving Power
39. 30AU to 50Au from sun - consists of ancietn premordial objects made of frozen ice and dust-35000 objects or more that are larger than 100 km in diameter and many more smaller than this
Coldest surface
Kuiper belt
Dark matter candidates
Resolving Power
40. Venus (retrograde)
slowest rotation
Largest diameter
CMB
Spectroscopic parallax
41. The process that powers the sun and hydrogen bombs
Energy Level
Kuiper belt
Thermonuclear Fusion
planetary nebula
42. The act of removing an electron from an atom.
fusion crust
Rich vs poor clusters
Ionization
Flare
43. The lens that gathers the light in a refractor
Objective Lens
Flocculent spirals
mapping the structure of Milky Way disk
Interstellar Extinction
44. The distance light travels in one year (=9.46x10^12km).
Light-Year
difference between maria and highlands of the moon.
Olber's paradox
Light: travels like a wave - detected like a particle
45. We can infer the absolute magnitude of pulsating variable stars by measuring their pulsation periods. The longer the pulsations - the greater their luminosities. We then again measure their apparent magnitudes - compare it with their absolute magnitu
Spectroscopy
molecular clouds
Cepheid variables
inferior planets
46. 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)
cosmic singularity
cosmology
Magnification
Planck time
47. 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)
Eyepiece Lens
Synodic Day
matter dominated universe
homogeneous
48. The point where a superior planet is as far away from the sun as it can be (as seen from the Earth)
opposition
Flat - Remain Parallel - Exactly 1
Vernal Equinox
resonance
49. The 11 or 22 period on the sun durin which sunspots increase - decrease - change polarity - increase and decrease again.
Maria
Population 1 vs Population 2 stars
Sunspot cycle
Turn off Point
50. An empirical scheme for predictin ghe orbital distances of planets
Corona
Make up of the terrestrial planets
Titus-Bode Law
Annular Eclipse