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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 light produced when particles from the sun collide with atmospheric molecules
Metals
quasar
Electromagnetic Radiation: Gamma Ray
aurora
2. A two-filter measure of the color - and hence temperature - of a star.
Color Index
partile horizon
Penumbra
Refractor
3. A large - irregularly shaped rocky object orbiting the sun mostly between mars and jupiter. Left-over planetesimals
Primary Mirror
Light Curve
slowest rotation
asteroid
4. The apparent magnitude a star would have if it were at a distance of 10 parsecs.
Light Pollution
Metals
Absolute Magnitude
Ground State
5. 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.
Halo
Negative - Diverge - Less than 1
radio lobe
6. In Ptolemy's geocentric solar system - the large circle on which a planet's epicycle moved around the Earth.
great red spot
Geocentric
deferent
density parameter
7. The gap inthe outer portion of Saturn's A ring
widmanstatten pattern
Enke gap
jovian
CMB
8. 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
Make up of the terrestrial planets
Trojan asteroids
Eclipses of the Moons of Jupiter
High Velocity Stars
9. Collections of young - hot stars
OB Associations
MOONS: most geologically active
anorthosite
Open - flat - and closed.
10. A spread of light with an uninterrupted wavelength distribution of energy.
Kuiper belt
Continuous Spectrum
Thermonuclear Fusion
cosmological principle
11. 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.
White Dwarf
Degeneracy
era of recombination
Superior planets
12. The lens in a telescope used to determine the magnification
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.
Magnification
interstellar dust
Eyepiece Lens
13. 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
Red Giant Branch Star
Umbra
Coronal Loop
14. A measure of how an object resists accelerating when acted upon by a force. It is proportional the amount of matter in an object
Perihelion
Photon
Stephen-Boltzman Law
mass
15. A prominence seen against the disk of the sun
Synodic Day
Filament
Autumnal Equinox
Trojan asteroids
16. The rock that makes up the lunar highlands
radiation pressure
H-are Diagram
Atomic Number
anorthosite
17. The class of all objects having high energy radiation coming from their nuclei. Active Galactic Nucleus- Blazars - Quasars - Radio and Emit synchrotron radiation
Brown dwarf
Kuiper belt
Electromagnetic Radiation
AGN
18. Venus
Thickest atmosphere
nova
Light Gathering Power
Cepheid Variable
19. The process similar to conduction by which energy moves from the solar core to the convective layer
Radiative Diffusion
highlands
Jupiters red spot
Red Giant
20. When the Moon entirely blocks the Sun.
cosmological principle
Thickest atmosphere
Total Eclipse
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.
21. 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
Flat - Flat
Dwarf planets
Rich vs poor clusters
MOONS: largest size
22. An energetic event taking place in the early universe
Density Wave
Gamma-ray Burst
Light Gathering Power
Metals
23. 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)
Void
Blackbody Curve
Planetary Nebula
Doppler Shift
24. The class of all objects having high energy radiation coming from their nuclei. Active Galactic Nucleus- Blazars - Quasars - Radio and Emit synchrotron radiation
opposition
Brown dwarf
MOONS: roundest shape
AGN
25. Ancient stream channels - flood planes - and sedimentary-type rock. Frozen water is found in the polar ice caps and in the soil.
reflection star clusters
Umbra
evidence of water on mars
cosmology
26. Ganymede
Total Eclipse
Red Giant
Secondary Mirror
MOONS: largest size
27. Small moons that maintain the shape of rings around Saturn and Uranus
Shepherd satellite
H2 Regions
Degeneracy
Roundest orbit
28. Titan
Steady State Theory (Leads to Olber's Paradox)
conjunction
Halo
MOONS: thickest atmosphere
29. All possible types of energy that can be emitted and absorbed by atoms.
supermassive black hole
quasar
mare basalt
Electromagnetic Radiation
30. Approximate speed of light in a vacuum
300000 KM/sec
superclusters
Photon
Light Pollution
31. Hot cells of gas that rise and fall in the hotosphere
Granules
Open - flat - and closed.
most moons
Population 1 vs Population 2 stars
32. The law stating that hotter blackbodies look bluer than cooler blackbodies.
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33. Neptune or uranus
Coldest surface
Black Hole
Jupiters red spot
Terrestrial Planets
34. The entity from which the whole universe is postulated to have come from.
cosmic singularity
Degeneracy
mass
White Dwarf
35. A planet that is farther from the sun than the Earth is
matter dominated universe
planetary nebula
Dark matter candidates
Superior planets
36. An object that may remain after a star explodes
Annular Eclipse
meteoriod
Electromagnetic Radiation: Ultraviolet Light
Neutron Star
37. The act of removing an electron from an atom.
Dark Matter
solar nebula
Largest diameter
Ionization
38. 10 cm -> 1 mm
Electromagnetic Radiation: Microwave
AGN
Thermonuclear Fusion
nucleus
39. 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
Proton-proton chain
Thickest atmosphere
Yes - frozen at the poles- remains protected from the suns rays
reflection star clusters
40. A bright area of higher temperature that often proceeds the formation of sunspots.
Convection
Meridian
Plague
Refractor
41. Material that shoots rapidly out into space. Flares cause Auroras
Flare
Stephen-Boltzman Law
Light: travels like a wave - detected like a particle
Halo
42. The distance between a lens and its focal plane
nucleus
If it is in a denser medium - such as glass - it will move slower
How is winding dilemma solved?
Focal Length
43. A word used in astronomy to describe all elements besides hydrogen and helium
Gamma-ray Burst
High Velocity Stars
molecular clouds
Metals
44. Earth
The Big Bang Theory resolves Olber's Paradox
A family of radiant energy- includes light
Most dense
Electromagnetic Radiation: Visible Light
45. Dark - reddish - low-pressure bands in Jupiter's atmosphere
nucleus
Sunspots
belt
Horizontal Branch Star
46. The larger bodies that formed early in teh solar nebula that were chemically differentiated
Make up of the jovian planets
planetesimal
smallest diameter
Supernova (You can be my supernova girl)
47. Titan
Gravitational Lens
slowest rotation
MOONS: thickest atmosphere
synchrotron radiation
48. The line on an H-are diagram going from upper left to lower right where normal stars of different masses reside.
meteor
Main Sequence
Big Bang
mass
49. The shadow behind the Earth or Moon where the Sun is partially obscured.
HII Region
Bok Globule
Energy Level
Penumbra
50. The amount of density needed to stop the universe from expanding and to begin the big crunch represented by Pc
Gravity only pulls matter back together. Therefore - if gravity is the only force that operates on cosmic scales then the expansion of the universe should decrease with time. The critical density is the value of matter density sufficient to halt the
critical density
Callisto (Jupiter)
Ecliptic