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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 law that describes the blackbody curve - and let to quantum mechanics.
2. Light scattered through the atmosphere that degrades astronomical images
A family of radiant energy- includes light
Objective Lens
Light Pollution
Roundest orbit
3. The law that predicts the possible types of spectra.
4. A two-filter measure of the color - and hence temperature - of a star.
Seeing
Electron
Liquid metallic hydrogen
Color Index
5. Disk dust grains are made of all the elements that are not in gaseous form in space which blocks starlight and causes interstellar extinction
interstellar dust
thinnest atmosphere
Kirkwood gaps
Cosmic Microwave Background
6. Heavier elements such as iron - silicon - magnesium - sulfer - nickel
Horizontal Branch Star
Make up of the terrestrial planets
Callisto (Jupiter)
accretion disk
7. A planet that is farther from the sun than the Earth is
Black Hole
Superior planets
meteor shower
Dark matter candidates
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
conjunction
Electromagnetic Radiation: Gamma Ray
High Velocity Stars
meteor shower
9. A planet that is closer to the sun than the earth
Black Hole
Seeing
inferior planets
Astronomical Unit
10. A measure of the ability of a telescope to see fine detail
Neutron Star
Resolving Power
Nucleus
Io (jupiters moon)
11. The assumption that the universe is isotropic (same in all directions) and homogeneous (Same everywhere throughout)
Superior planets
fewest moons
Secondary Mirror
cosmological principle
12. Mercury
most eccentric orbit
tectonics of Mars
CNO Cycle
Focal Length
13. A very low mass particle formed in solar fusion reactions that reacts only weakly with matter
neutrino
Yes - frozen at the poles- remains protected from the suns rays
Light: travels like a wave - detected like a particle
Resolving Power
14. Collections of young - hot stars
OB Associations
Inverse Square Law
deferent
We don't know. It might be but does not have to be.
15. Moon in less than the angular diameter of the Sun.
Differential Rotation
Degeneracy
Annular Eclipse
Asymptotic giant Branch Star
16. Clouds of low density gas often found glowing faintly on either side of an AGN.
condensation temperature
Thermonuclear Fusion
radio lobe
Big Crunch
17. How did Earth come to have an oxygen rich atmosphere?
force
CCD
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.
chondrite
18. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE
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
Europa (Jupiters moon)
era of recombination
self-propagating star formation
19. A term referring to Earth-like planets
terrestrial planet
Flocculent spirals
Poor Cluster
Black Hole
20. Relativity predicts that nothing can travel faster than the speed of light in a vacuum - How can it move slower?
Jupiters red spot
Particle Horizon
If it is in a denser medium - such as glass - it will move slower
Color Index
21. The material from which the solar system formed
Asymptotic giant Branch Star
solar nebula
terrestrial planet
Pixel
22. Europa
meteor
MOONS: roundest shape
Light-Year
Proton-proton chain
23. A large - irregularly shaped rocky object orbiting the sun mostly between mars and jupiter. Left-over planetesimals
asteroid
contrast northern lowlands and the southern highlands of mars...
SETI
Filament
24. When the Sun is farthest north of the celestial equator (about June 22)
Summer Solstice
interstellar dust
meteor shower
widmanstatten pattern
25. The number of protons in an atom.
Celestial Equator
Atomic Number
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.
300000 KM/sec
26. Heavier elements such as iron - silicon - magnesium - sulfer - nickel
Make up of the terrestrial planets
Umbra
HII Region
Positive - Converge - Greater than 1
27. Venus
hottest surface
Sc spiral galaxy
Neutron Star
radio lobe
28. A star that is in the process of forming. It glows from gravitational contraction
Lagrangian Razor
Sb spiral galaxy
Trojan asteroids
protostar
29. An energetic event taking place in the early universe
force
Ecliptic
Gamma-ray Burst
Wein's Law
30. A massive variable star used to find distances to the galaxies or clusters that contain them.
Cepheid Variable
Lagrangian Razor
Triple Alpha rocess
Olber's paradox
31. The location in an H-are diagram of a star cluster - where stars have just left the main sequence. Used to estimate the cluster age.
Turn off Point
Chromosphere
force
zone
32. The rock that makes up the lunar highlands
Kirkwood gaps
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
nucleus
anorthosite
33. First accurately measured the speed of light in a vacuum
Make up of the jovian planets
Planetary Nebula
Ole Roemer
Electron
34. Jupiter - Saturn - Uranus - Neptune
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
Jovian Planets
Parsec
Thickest atmosphere
35. Radiation given off by electrons accelerating in a magnetic field
Jupiters red spot
Milky way Galaxy
Enke gap
Synchrotron Rotation
36. The mix of pure photon energy that emerged at the start of the universe.
cosmic fireball
Molecular Clouds
Gamma ray bursts
Particle Horizon
37. The mass of an object divided by its volume
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.
density
Perihelion
Kuiper belt
38. Neptune or uranus
Supercluster
Coldest surface
Photosphere
Gamma-ray Burst
39. The rotation period of the Earth measured relative to the stars.
Sidereal Day
nucleus
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.
Nucleus
40. A location on an H-are Diagram where evolving stars pulsate
asteroid
Doppler Shift
Instability strip
Make up of the terrestrial planets
41. Either Io -Europa - Ganymede - or Callisto
Apollo asteroids
Black Hole
Quasar
Galilean satellite
42. A term referring to Jupiter-like planets
mare basalt
Continuous Spectrum
smallest diameter
jovian
43. The fate of the universe if it is closed. The universe expanding as much as possible and then retracting
Big Crunch
isotropic
opposition
greatest elongation
44. Small bulges - loosely wound - massive arms - arms have many H2 regions and look very lumpy
Sc spiral galaxy
aphelion
accretion disk
Terrestrial Planets
45. The process of acquiring material
Red Giant
Electromagnetic Radiation
Make up of the jovian planets
accretion
46. Matter that reveals itself only through its gravitational attraction.
Celestial Equator
cosmology
Plank's Law
dark matter
47. The final end state of a high mass star. .An entity for which gravity has completely overwhelmed all other forces of nature.
We don't know. It might be but does not have to be.
Black Hole
Flare
MOONS: roundest shape
48. 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
reflection star clusters
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.
mass
Kuiper belt
49. A volume of space where few - if any - galaxies are located
White Dwarf
Void
Roundest orbit
radiant
50. IO
Objective Lens
Largest diameter
Total Eclipse
MOONS: most geologically active