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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. Mercury and venus
Summer Solstice
Rich vs poor clusters
fewest moons
zone
2. The part of the Milky way that has on-going star formation
widmanstatten pattern
isotropic
Disk
Flocculent spirals
3. The oldest part of the Milky Way
Halo
Electromagnetic Radiation: Infrared
Spectroscopic Parallax
Electromagnetic Radiation: Microwave
4. A planet that is farther from the sun than the Earth is
Superior planets
Light-Year
Nova
Open Cluster
5. The location of a supermassive black hole
Nucleus
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.
Precession
Photosphere
6. 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 ________.
Autumnal Equinox
Hubble constant
Jovian Planets
Flat - Flat
7. The shadow behind the Earth or Moon where the Sun is partially obscured.
Objective Lens
Open Cluster
Light Gathering Power
Penumbra
8. Is space infinitely large?
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9. The location in the Milky Way where stars orbit like a solid wheel
CMB
Photon
dark energy
Bulge
10. 10 nm 10^2 nm
neutrino
Photosphere
greatest elongation
Electromagnetic Radiation: X-Ray
11. The act of removing an electron from an atom.
Summer Solstice
Io (jupiters moon)
Jupiters red spot
Ionization
12. The 'edge' of the universe. Light beyond this has not reached us yet.
Parsec
least dense
Synchrotron Rotation
partile horizon
13. 10^2 nm 10^7 nm
Sa spiral galaxy
Particle Horizon
Supernova (You can be my supernova girl)
Electromagnetic Radiation: Gamma Ray
14. The line on an H-are diagram going from upper left to lower right where normal stars of different masses reside.
Main Sequence
Planetary Nebula
Nowhere visible to us. If there are higher dimension then the center would be visible to someone who lives in one. If there are no higher dimensions then the center does not exist.
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.
15. The law that predicts the possible types of spectra.
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16. The dimming of starlight by intervening dust
Electromagnetic Radiation: Gamma Ray
Interstellar Extinction
Zenith
Wein's Law
17. The law that describes the blackbody curve - and let to quantum mechanics.
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18. The final end state of a high mass star. .An entity for which gravity has completely overwhelmed all other forces of nature.
interstellar dust
Parallax
Black Hole
critical density
19. The high- temperatature outer layer of the sun
Corona
The Big Bang Theory
Most dense
Extrasolar Planet
20. A force exerted by reflecting sunlight
Objective Lens
Gravitational Lens
radiation pressure
Absolute Magnitude
21. First accurately measured the speed of light in a vacuum
terrestrial planet
Ole Roemer
contrast northern lowlands and the southern highlands of mars...
plate tectonics
22. Comglomerates of ice and rock that orbit the sun in highly elliptical paths
Terrestrial Planets
protostar
Asymptotic giant Branch Star
comet
23. How did Earth come to have an oxygen rich atmosphere?
Cosmic Microwave Background
chemical differentiation
great dark spots
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.
24. A huge sphere of tenuous gas surrounding the nucleus of a comet
The Big Bang Theory
Hydrostatic Equilibrium
3 reasons we orbit satellites to observe universe
coma
25. A term referring to Earth-like planets
Colestial Pole
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
terrestrial planet
Cosmic Microwave Background (CMB)
26. All wavelengths of light emitted by a blackbody.
A family of radiant energy- includes light
protostar
Halo
Blackbody Curve
27. A star that has become a red giant for the second and final time. It is burning helium to carbon in a shell surrounding the core
Nucleus
Asymptotic giant Branch Star
Light: travels like a wave - detected like a particle
Black Hole
28. The name for the only seriously considered theory of the universe.
meteoriod
Big Bang
Callisto (Jupiter)
Supernova (You can be my supernova girl)
29. The normal eastward movement of a planet against the background of hte distant stars.
differential rotation
hottest surface
White Dwarf
direct motion
30. The rotation period of the Earth measured relative to the stars.
Thermal Equilibrium
blazar
matter dominated universe
Sidereal Day
31. A bridge of material held in position above the solar surface. They can remain for hours even days
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.
Prominence
tectonics of Venus
cosmic singularity
32. Moon in less than the angular diameter of the Sun.
Limb darkening
Annular Eclipse
Spectroscopic parallax
weight
33. The rotation period of the Earth measured relative to the Sun.
Largest diameter
Synodic Day
Eclipses of the Moons of Jupiter
Thickest atmosphere
34. A spectrum of light with energy at only a few wavelengths.
Spectroscopy
Precession
Emission Spectrum
density
35. 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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36. Why do Galaxies move very rapidly in the interiors of the dense clusters?
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
Gamma ray bursts
Sunspots
Blackbody Curve
37. The entity responsible for spiral arms in grand-design spiral galaxies
Total Eclipse
asteroid
Red Giant
Density Wave
38. How is the Hubble Law consistent with an expanding universe?
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.
neutrino
aphelion
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
39. The rotation of a star or planet at different speeds at its equator and poles
differential rotation
Disk
Colestial Pole
Black Hole
40. 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:
Instability strip
Electromagnetic Radiation: Gamma Ray
Synchrotron Rotation
Drake equation
41. A faint - remarkably uniform distribution of radiation in space
Dwarf planets
Total Eclipse
Cosmic Microwave Background
Instability strip
42. The apparent magnitude a star would have if it were at a distance of 10 parsecs.
Absolute Magnitude
Light-Year
Most dense
Color Index
43. The fusion process that turns three helium nuclei into a carbon nucleus
Triple Alpha rocess
fastest rotation
Meridian
Light Gathering Power
44. Thick rigid crust - no longer has plate tectonics but still has convective hot spots that create earth-like volcanoes except that last for billions of years because of lack of tectonics.
zone
tectonics of Mars
Electromagnetic Radiation: Ultraviolet Light
Galilean satellite
45. Rich= dense crowded cores of galaxies - poor= few members and a looser organization of galaxies
MOONS: largest size
chondrite
Electromagnetic Radiation: X-Ray
Rich vs poor clusters
46. The mirror that gathers the light in a reflector
CNO Cycle
cosmological principle
Primary Mirror
greehouse effects
47. A push or a pull
comet
Colestial Pole
retrograde motion
force
48. A rock or iron specimen that has fallen from space
Emission Spectrum
Titus-Bode Law
meteorite
Superior planets
49. The family of radiant energy that includes light as a subset
E=mc2
Nebula
Convection
Electromagnetic Radiation
50. Mercury - Venus - Earth - Mars
rotation curve = dark matter?
Bok Globule
Terrestrial Planets
Sunspot cycle