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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. Venus
Rich vs poor clusters
Pixel
Absorption Spectrum
Roundest orbit
2. A prominence seen against the disk of the sun
Sunspots
Rich vs poor clusters
Chromosphere
Filament
3. A telescope that uses mirrors to focus light
Density Wave
Perihelion
radiation pressure
Reflector
4. Poitns of gravitational stability in the orbit of a planet
Lagrangian Razor
Synchrotron Rotation
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.
Electromagnetic Radiation: Microwave
5. Centered on the sun.
Heliocentric
Open Cluster
aphelion
Electromagnetic Radiation: Gamma Ray
6. Flattened spherical distribution of old stars with some young stars too. 'hub' of Milky way - stars orbit with solid body speeds. Elongated into bar shape
bulge
Apparent Magnitude
anorthosite
Color Index
7. Orbit in Jupiters orbit
Light-Year
Light-Year
acceleration
Trojan asteroids
8. The first rock-sized bodies that formed in the solar nebula from dust grains
difference between maria and highlands of the moon.
chondrite
Electromagnetic Radiation: Visible Light
Corona
9. A star fusing hydrogen to helium in it's core
Cepheid Variable
Focal Plane
Main Sequence Stars
Main Sequence
10. Mercury
opposition
Hipparchus
thinnest atmosphere
Chromosphere
11. Titan
Perihelion
Gamma ray bursts
MOONS: thickest atmosphere
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
12. A faint - remarkably uniform distribution of radiation in space
gravity
Cosmic Microwave Background
cosmological red shift
Blackbody
13. The force of attraction between any two objects having mass
Doppler Shift
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
gravity
Thickest atmosphere
14. Saying that the sky should not get dark at night because all lines of sight end on a star meaning that the night sky should be ablaze BUT the big bang - because the universe had a beginning - says that the sky gets dark because out in space - galaxie
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15. Long - meandering cliff formed when a planet surface cools and shrinks
Coldest surface
scarp
Photon
White Dwarf
16. The ratio of the actual density of the universe to the critical density. (actual density divided by the critical density
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
Heliocentric
density parameter
Colestial Pole
17. Large nebula consisting of very cold gas and dust
Sa spiral galaxy
Kuiper belt
Thickest atmosphere
Molecular Clouds
18. The sinking of denser elements to the center of a young molten planet
chemical differentiation
Olber's paradox
Electromagnetic Radiation: Microwave
slowest rotation
19. The science of measuring light energy by wavelength.
belt
MOONS: thickest atmosphere
mass
Spectroscopy
20. All possible types of energy that can be emitted and absorbed by atoms.
Synchrotron Rotation
E=mc2
fusion crust
Electromagnetic Radiation
21. The elementary building blocks from which protons and neutrons are formed.
Doppler Shift
smallest diameter
neutrino
quarks
22. Half of the longest diameter across an ellipse
Make up of the terrestrial planets
Disk
semimajor axis
CNO Cycle
23. The state of having a balance between inward and outard pressures in a gas--the inward force from gravity is balanced by the outward force from heat.
evidence of water on mars
Titus-Bode Law
Maria
Hydrostatic Equilibrium
24. Places in the asteroid belt - caused by resonance with Jupiter - where there are no asteroids
Kirkwood gaps
Planck time
synchrotron radiation
meteoriod
25. Arcs of increased mass concentration that slow stars and gas down as they orbit through which cause the formation of stars.
Population 1 vs Population 2 stars
density waves
Hipparchus
Lagrangian Razor
26. Highlands: rocks are made of lighter anorthosite (similar to old earth rocks) Maria: rocks made of heavy mare basalt (volcanic rock) everywhere else is loose regolith created by meteoric impact.
general star population
Lagrangian Razor
Degeneracy
difference between maria and highlands of the moon.
27. When particles are compressed to an unnatural state where their pressure is not related to their temperature
Degeneracy
Turn off Point
direct motion
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
28. Young clusters in disk are irregularly shaped since they have no time to relax into the rounder relaxed shape of globular clusters-will constantly be torn apart and assimilated.
fastest rotation
accretion disk
open star clusters
Secondary Mirror
29. The movement of the Earth's crustal plates riding on top of the mantle.
plate tectonics
Electromagnetic Radiation: Radio
molecular clouds
Plank's Law
30. Venus (retrograde)
meteorite
Ionization
smallest diameter
slowest rotation
31. When massive objects bend space and time enough to create multiple images of an object located behind them
Apollo asteroids
retrograde motion
Gravitational Lens
density parameter
32. The material from which the solar system formed
Cosmological Principle
solar nebula
Cassini division
density parameter
33. What are the three possible geometries of the universe?
Open - flat - and closed.
MOONS: larger than mercury
accretion disk
Sa spiral galaxy
34. A planet orbiting about a distant star
Nova
MOONS: thickest atmosphere
Extrasolar Planet
Hipparchus
35. Moon in less than the angular diameter of the Sun.
Triple Alpha rocess
Annular Eclipse
highlands
synchronous rotation
36. Hot cells of gas that rise and fall in the hotosphere
Granules
Cosmological Principle
Winter Solstice
conjunction
37. Comglomerates of ice and rock that orbit the sun in highly elliptical paths
Poor Cluster
Apparent Magnitude
Ammonia - methane - and water
comet
38. The lens that gathers the light in a refractor
Parallax
cosmology
Objective Lens
Sunspot cycle
39. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE
Olber's paradox
Gamma ray bursts
Europa (Jupiters moon)
Thermonuclear Fusion
40. A bridge of material held in position above the solar surface. They can remain for hours even days
Prominence
Hydrostatic Equilibrium
Open Cluster
Electromagnetic Radiation: Infrared
41. Formed rapidly - collapsed slower into disk shape - star birth rate is low but lasts longer and ongoing - contain higher mass blue stars.
cosmology
dark matter
shape and color of SPIRAL galaxies
Largest diameter
42. The point where an inferior planet is as far away from the sun as it can be (as seen from the Earth)
greatest elongation
Cosmological Principle
Meridian
Big Crunch
43. Medium bulge - moderately would arms - arms have H2 regions in them and look sort of lumpy
Gamma ray bursts
Flat - Flat
Sb spiral galaxy
Emission Spectrum
44. The line on an H-are diagram going from upper left to lower right where normal stars of different masses reside.
Apparent Magnitude
Main Sequence
Annular Eclipse
contrast northern lowlands and the southern highlands of mars...
45. A measure of how an object resists accelerating when acted upon by a force. It is proportional the amount of matter in an object
H2 Regions
mass
Kirkwood gaps
anorthosite
46. 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
Flat - Flat
Asymptotic giant Branch Star
inferior planets
Refractor
47. Star speed at outer edge of galaxy should begin to diminish - but they dont so we guess that this means there is increasing force (aka dark matter)
rotation curve = dark matter?
radiation dominated universe
radio galaxy
Flat - Flat
48. A bright area of higher temperature that often proceeds the formation of sunspots.
Plague
Callisto (Jupiter)
radio galaxy
greehouse effects
49. How did Earth come to have an oxygen rich atmosphere?
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.
planetesimal
Convection
nova
50. The layer of the sun just above the photosphere
Horizontal Branch Star
Chromosphere
roche limit
Hipparchus
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