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Test your basic knowledge |
Cosmology
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Study First
Subject
:
science
Instructions:
Answer 50 questions in 15 minutes.
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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 rock that makes up the lunar highlands
anorthosite
Chandrasekhar Limit
Degeneracy
bulge
2. A star without enough mass to begin hydrogen fusion
great dark spots
evidence of water on mars
Brown dwarf
inferior planets
3. The point in its orbit where a planet is farthest from the sun
aphelion
Electromagnetic Radiation: X-Ray
Positive - Converge - Greater than 1
meteorite
4. Why do Galaxies move very rapidly in the interiors of the dense clusters?
differential rotation
Brown dwarf
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
H-are Diagram
5. A particle of light.
Ole Roemer
Photon
conjunction
Corona
6. A representation of the changes in color and brightness of an evolving protostar.
Hyashi track
Make up of the terrestrial planets
Kirchhoff's Law
Penumbra
7. When material is heated and moves taking the heat energy with it
protostar
Extrasolar Planet
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
Convection
8. Flat disk with gas - dust - H2 regions - molecular clouds - dust young stars and remnants of old planetary nebula and supernova remnants. stars spin together with similar velocities called differential rotation
plate tectonics
slowest rotation
disk
Plank's Law
9. Europa
Make up of the jovian planets
The Local Group
quasar
MOONS: roundest shape
10. In a CLOSED UNIVERSE - the curvature of space-time is _________. Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is _____.
Callisto (Jupiter)
least dense
Positive - Converge - Greater than 1
Celestial Sphere
11. Matter that reveals itself only through its gravitational attraction
Dark Matter
supermassive black hole
chondrite
Resolving Power
12. The mass of an object divided by its volume
density
Cassini division
Convection
synchrotron radiation
13. The universe is isotropic - homogeneous - and without beginning or end in time and space. If the universe is truly homogeneous then every line of sight will eventually end on a galaxy. If it has existed forever then there has been enough time for lig
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14. 10 nm 10^2 nm
Lagrangian Razor
Summer Solstice
Electromagnetic Radiation: X-Ray
Big Bang
15. The fusion process that turns three helium nuclei into a carbon nucleus
Planck time
protostar
Triple Alpha rocess
Astronomical Unit
16. The mass of an object divided by its volume
density
Neutron Star
Perihelion
Hubble constant
17. The first rock-sized bodies that formed in the solar nebula from dust grains
chondrite
condensation temperature
Quasar
zone
18. The movement of the Earth's crustal plates riding on top of the mantle.
Apollo asteroids
plate tectonics
Electron
White Dwarf
19. Ancient stream channels - flood planes - and sedimentary-type rock. Frozen water is found in the polar ice caps and in the soil.
evidence of water on mars
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
Jovian Planets
Summer Solstice
20. The movement of the Earth's crustal plates riding on top of the mantle.
Thickest atmosphere
Sc spiral galaxy
plate tectonics
tectonics of Mars
21. A spherical shell of comets that orbit the sun at a great distance (roughly two light years from the sun)
Drake equation
isotropic
Titus-Bode Law
Oort cloud
22. The point in its orbit where a planet is nearest the sun
Heliocentric
Perihelion
retrograde motion
Filament
23. Relativity predicts that nothing can travel faster than the speed of light in a vacuum - How can it move slower?
If it is in a denser medium - such as glass - it will move slower
Electromagnetic Radiation: Gamma Ray
Parallax
Electromagnetic Radiation: Ultraviolet Light
24. Originially thought to be stars emitting radio radiation but are now concluded to be nuclei of distant galaxies (same as radio galaxies aka emit streams of material)
quasar
Precession
Proton-proton chain
MOONS: larger than mercury
25. The rate of expansion of the universe.
Hyashi track
radiant
Hubble constant
Photometry
26. A planet orbiting about a distant star
Eyepiece Lens
Radio Galaxy
deferent
Extrasolar Planet
27. The number of protons in an atom.
Electromagnetic Radiation: Gamma Ray
Atomic Number
Galilean satellite
Prominence
28. The process responsible for creating the arms of flocculent spiral galaxies
Color Index
Self-Propogating Star Formation
3 reasons we orbit satellites to observe universe
era of recombination
29. Latin for 'cloud'. A word used to describe the collections of gas and dust in the Milky Way and other galaxies
Nebula
Black Hole
Dark Nebula
Granules
30. Ganymede and Titan
MOONS: larger than mercury
Colestial Pole
Sunspot cycle
MOONS: most geologically active
31. The family of radiant energy that includes light as a subset
accretion disk
cosmic singularity
Largest diameter
Electromagnetic Radiation
32. Why does the earth have few craters while the moon has many?
Light Gathering Power
Open - flat - and closed.
MOONS: larger than mercury
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
33. A change in the appearance of the sun at the edge of the solar disk
Limb darkening
Resolving Power
Interstellar Extinction
Cosmological Principle
34. The shadow behind the Earth or Moon where the Sun is partially obscured.
mass
OB Associations
Coldest surface
Penumbra
35. 1μm 100 nm
Olber's paradox
Electromagnetic Radiation: Visible Light
Density Wave
Autumnal Equinox
36. The oldest terrain on the moon
superclusters
Celestial Sphere
supernova
highlands
37. A highly variable galaxy nucleus of which BL Lac is one. Their light is highly energetic and their spectra are featureless. (face on)
H-are Diagram
blazar
Shepherd satellite
Objective Lens
38. 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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39. The oldest terrain on the moon
Geocentric
Ecliptic
cosmological principle
highlands
40. Dark - reddish - low-pressure bands in Jupiter's atmosphere
belt
Thermal Equilibrium
CCD
Trojan asteroids
41. An entity that is likely in the nucleus of most - if not all - galaxies.
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.
Electromagnetic Radiation: Ultraviolet Light
supermassive black hole
Parallax
42. A bright area of higher temperature that often proceeds the formation of sunspots.
Yes - frozen at the poles- remains protected from the suns rays
H2 Regions
Plague
hottest surface
43. The distance light travels in one year (=9.46x10^12km).
Objective Lens
Photon
Light-Year
accretion disk
44. A word used in astronomy to describe all elements besides hydrogen and helium
Plague
coma
Metals
isotropic
45. The rock that makes up the lunar maria
Emission Spectrum
Big Crunch
mare basalt
nucleus
46. Neptune or uranus
scarp
density waves
Spectral Lines
Coldest surface
47. The wavelengths where a specific element can absorb or emit light.
most eccentric orbit
Galilean satellite
Proton-proton chain
Spectral Lines
48. Loops that trace the magnetic field as it erupts from a sunspot area and arches over to an adjacent area. They glow in the light of gas pouring out of corona and falling into photosphere.
Coronal Loop
cosmic singularity
Flare
Corona
49. The larger bodies that formed early in teh solar nebula that were chemically differentiated
planetesimal
Open Cluster
Gravitational Lens
Poor Cluster
50. A galaxy emitting large amounts of energy at long wavelengths.
Inverse Square Law
MOONS: most geologically active
Dwarf planets
radio galaxy
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