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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 fusion process in which protons build together to form helium
Proton-proton chain
Emission Spectrum
Stephen-Boltzman Law
cosmological principle
2. A repeated - periodic push or pull capable of summing into a larger push or pull
cosmological principle
resonance
Jupiters red spot
Electron
3. 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
Dark matter candidates
meteoriod
synchronous rotation
Kuiper belt
4. The 'edge' of the universe. Light beyond this has not reached us yet.
Brown dwarf
shape and color of ELLIPTICAL galaxies
We don't know. It might be but does not have to be.
partile horizon
5. A very low mass particle formed in solar fusion reactions that reacts only weakly with matter
Main Sequence Stars
neutrino
opposition
Photosphere
6. Cold aggregates of gas - large and contain a huge amount of matter - so cold that molecules stick together to form molecules.
Sunspots
Reflector
molecular clouds
plate tectonics
7. Mercury
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
thinnest atmosphere
radiation pressure
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
8. In a CLOSED UNIVERSE - the curvature of space-time is _________. Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is _____.
Convection
Largest diameter
cosmic fireball
Positive - Converge - Greater than 1
9. Sc galaxies
Ganymede (Jupiter)
hottest surface
Trojan asteroids
Flocculent spirals
10. Ancient stream channels - flood planes - and sedimentary-type rock. Frozen water is found in the polar ice caps and in the soil.
Eyepiece Lens
evidence of water on mars
shape and color of SPIRAL galaxies
Seeing
11. A star that is in the process of forming. It glows from gravitational contraction
protostar
cosmology
Electromagnetic Radiation: Gamma Ray
Quasar
12. The oldest part of the Milky Way
Halo
nova
dark energy
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.
13. The location of a supermassive black hole
Flat - Remain Parallel - Exactly 1
Nebula
Stephen-Boltzman Law
Nucleus
14. The process that powers the sun and hydrogen bombs
Absolute Magnitude
Black Hole
Thermonuclear Fusion
Asymptotic giant Branch Star
15. 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)
synchrotron radiation
Planck time
Degeneracy
smallest diameter
16. Mercury
Nova
Eyepiece Lens
most eccentric orbit
dark matter
17. Radiation emitted when charged particles spiral rapidly in a magnetic field. come off of jets from black holes.
Cepheid Variable
neutrino
Supernova (You can be my supernova girl)
synchrotron radiation
18. 10^2 nm 10^7 nm
Synodic Day
Electromagnetic Radiation: Gamma Ray
Differential Rotation
Rich Cluster
19. Large bulge - tightly wound spiral arms - relatively few h2 regions and are smooth
Sa spiral galaxy
Doppler Shift
Differential Rotation
cosmic singularity
20. A point in the sky where meteors appear to come from during a shower
radiant
Ole Roemer
Electromagnetic Radiation: Visible Light
radio lobe
21. Disk dust grains are made of all the elements that are not in gaseous form in space which blocks starlight and causes interstellar extinction
Kirchhoff's Law
aphelion
protostar
interstellar dust
22. The equation that describes how matter equates with energy
E=mc2
Chromosphere
Electromagnetic Radiation: Gamma Ray
Differential Rotation
23. The crust of a meteorite caused by its entry into Earth's atmosphere
Ionization
quasar
fusion crust
Open - flat - and closed.
24. The most mass a white dwarf can have before collapsing to a neutron star
density
jovian
Bok Globule
Chandrasekhar Limit
25. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE
Europa (Jupiters moon)
Asymptotic giant Branch Star
Lagrangian Razor
Magnification
26. The state of having a balance between inflowing and outflowing heat-- the temp at every radial point is different but constant
Thermal Equilibrium
evidence of water on mars
molecular clouds
Radio Galaxy
27. The imaginary sphere centered on the Earth that hols the stars.
Ionization
most eccentric orbit
Celestial Sphere
mapping the structure of Milky Way disk
28. A push or a pull
great red spot
force
Instability strip
cosmic fireball
29. A faint - remarkably uniform distribution of radiation in space
Celestial Sphere
Cosmic Microwave Background
homogeneous
chondrite
30. The rotation period of the Earth measured relative to the Sun.
Synodic Day
Hyashi track
Absorption Spectrum
Cosmic Microwave Background (CMB)
31. A term referring to Earth-like planets
Gamma-ray Burst
terrestrial planet
Quasar
Reflector
32. Centered on the Earth
Summer Solstice
CCD
rotation curve = dark matter?
Geocentric
33. A small chunk of rock in space
Callisto (Jupiter)
Degeneracy
Coldest surface
meteoriod
34. All possible types of energy that can be emitted and absorbed by atoms.
Photosphere
Brown dwarf
meteorite
Electromagnetic Radiation
35. The high- temperatature outer layer of the sun
density waves
Corona
Inverse Square Law
Open Cluster
36. First accurately measured the speed of light in a vacuum
most eccentric orbit
Ole Roemer
High Velocity Stars
If it is in a denser medium - such as glass - it will move slower
37. What is the universe expanding into?
Absorption Spectrum
Chromosphere
radiation dominated universe
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.
38. A distance measure determined by the shifting of a star against the background sky every 6 months.
Parsec
OB Associations
Prominence
Photometry
39. Milky way galaxy is a member - a small poor cluster-about 30 galaxies
standard candle
The Local Group
protostar
Triple Alpha rocess
40. The oldest terrain on the moon
A family of radiant energy- includes light
highlands
Galilean satellite
Flare
41. Radiation given off by electrons accelerating in a magnetic field
Synchrotron Rotation
Olber's paradox
zone
Light Pollution
42. Dark - reddish - low-pressure bands in Jupiter's atmosphere
Parallax
molecular clouds
coma
belt
43. The class of all objects having high energy radiation coming from their nuclei. Active Galactic Nucleus- Blazars - Quasars - Radio and Emit synchrotron radiation
Titus-Bode Law
synchrotron radiation
Big Crunch
AGN
44. A galaxy sending out a stream of material from its nucleus
Big Bang
Precession
Meridian
Radio Galaxy
45. A faint - remarkably uniform distribution of radiation in space
conjunction
Sidereal Day
Prominence
Cosmic Microwave Background
46. A nearby galaxy with a quasar-like nucleus. closer but less bright than quasars-weaker
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.
Seyfert galaxy
meteoriod
Poor Cluster
47. Small bulges - loosely wound - massive arms - arms have many H2 regions and look very lumpy
Sc spiral galaxy
Black Hole
Electromagnetic Radiation: Infrared
Disk
48. A streak of light in the atmosphere
meteor
Nucleus
Turn off Point
Superior planets
49. A volume of space where few - if any - galaxies are located
molecular clouds
Void
Cosmological Principle
Chandrasekhar Limit
50. The dimming of starlight by intervening dust
Interstellar Extinction
Convection
Observations of distant type Ia supernovae indicate that the expansion of the universe is speeding up with time - not slowing down! So there must be a force causing this.
Io (jupiters moon)