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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. 10 nm 10^2 nm
MOONS: largest size
open star clusters
Electromagnetic Radiation: X-Ray
mare basalt
2. The amount of density needed to stop the universe from expanding and to begin the big crunch represented by Pc
critical density
gravity
Bulge
density waves
3. The Greek philosopher responsible for making the stellar magnitude scale.
homogeneous
Galilean satellite
Hipparchus
Rich vs poor clusters
4. Sulfurous volcanoes - pools of liquid sulfur - surface resembles cheese pizza ACTIVE SURFACE
great dark spots
Io (jupiters moon)
shape and color of SPIRAL 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.
5. A faint - remarkably uniform distribution of radiation in space
greehouse effects
Active Optics
Precession
Cosmic Microwave Background
6. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE
Molecular Clouds
Cosmic Microwave Background (CMB)
Bok Globule
Europa (Jupiters moon)
7. 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
Jupiters red spot
Dwarf planets
Degeneracy
8. A term referring to Earth-like planets
Milky way Galaxy
Total Eclipse
terrestrial planet
Degeneracy
9. The source of the force that is accelerating the expansion rate of the universe.
H-are Diagram
dark energy
High Velocity Stars
quasar
10. A streak of light in the atmosphere
meteor
Filament
Ground State
CNO Cycle
11. The sinking of denser elements to the center of a young molten planet
chemical differentiation
standard candle
Poor Cluster
Flat - Remain Parallel - Exactly 1
12. The rotation of a star or planet at different speeds at its equator and poles
aphelion
Inverse Square Law
differential rotation
Parsec
13. Hot cells of gas that rise and fall in the hotosphere
Photon
Absolute Magnitude
Granules
Chromosphere
14. 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.
Kirkwood gaps
mare basalt
Olber's paradox
15. An efficient - two-dimensional electronic light detector. Common in digital cameras - they revolutionized astronomical imaging
CCD
Absolute Magnitude
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
shape and color of ELLIPTICAL galaxies
16. Mercury
Cosmic Microwave Background (CMB)
conjunction
thinnest atmosphere
cosmological principle
17. A small spherical dark nebula
greehouse effects
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
Bok Globule
Most dense
18. Light-colored high-pressure bands in Jupiter's atmosphere
Convection
Oort Cloud
Jupiters red spot
zone
19. The rate of expansion of the universe.
Electromagnetic Radiation: Gamma Ray
Oort cloud
Hubble constant
weight
20. Venus
Drake equation
Primary Mirror
tectonics of Mars
Roundest orbit
21. Europa
shape and color of ELLIPTICAL galaxies
MOONS: roundest shape
Interstellar Extinction
High Velocity Stars
22. A telescope that uses lenses to focus light
White Dwarf
Precession
Color Index
Refractor
23. Arcs of increased mass concentration that slow stars and gas down as they orbit through which cause the formation of stars.
Eyepiece Lens
density waves
Molecular Clouds
Heliocentric
24. Collections of young - hot stars
Gamma ray bursts
OB Associations
least dense
Rich Cluster
25. The high- temperatature outer layer of the sun
Triple Alpha rocess
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.
Eyepiece Lens
Corona
26. The act of removing an electron from an atom.
greehouse effects
Ionization
acceleration
Objective Lens
27. A collection of galaxies like the one the Milky Way belongs to
Poor Cluster
Light-Year
hottest surface
Liquid metallic hydrogen
28. A fusion process in which protons build together to form helium
Open - flat - and closed.
Proton-proton chain
radio lobe
matter dominated universe
29. The projection of the Earth's equator onto the celestial sphere.
Positive - Converge - Greater than 1
Celestial Equator
Yes - frozen at the poles- remains protected from the suns rays
accretion
30. The oldest grouping of stars - found in the galaxy halo
open star clusters
Kuiper belt
Electromagnetic Radiation: Radio
Globular Cluster
31. The particle horizon is the farthest we can see. It exists because the universe had a beginning and thus a definite age. Light from distances farther away from the particle horizon have not had time to reach us yet.
Particle Horizon
Sa spiral galaxy
synchrotron radiation
Synodic Day
32. A massive variable star used to find distances to the galaxies or clusters that contain them.
quasar
tectonics of Venus
Callisto (Jupiter)
Cepheid Variable
33. The elementary building blocks from which protons and neutrons are formed.
great dark spots
quarks
Rich vs poor clusters
Light: travels like a wave - detected like a particle
34. Places in the asteroid belt - caused by resonance with Jupiter - where there are no asteroids
Kirkwood gaps
Absorption Spectrum
A family of radiant energy- includes light
Geocentric
35. Dying large-mass stars lose their outer layers in a violent explosion creating large - chaotic remnants. these brighten like nova but are so much brighter and only occur ONCE PER STAR
supernova
Electromagnetic Radiation: X-Ray
Atomic Number
Electromagnetic Radiation
36. Hurricane-like vortex in southern-hemisphere winds to north and south blow in opposite directions which keep it spinning and with no subsurface features like mountians it persists.
tectonics of Venus
Spectroscopic parallax
Wein's Law
Jupiters red spot
37. A small and dim but hot star.
White Dwarf
conjunction
blazar
Reflector
38. Long - meandering cliff formed when a planet surface cools and shrinks
scarp
Kuiper belt
radio galaxy
supermassive black hole
39. Mercury - Venus - Earth - Mars
Instability strip
Reflector
Terrestrial Planets
Granules
40. Elliptical orbits that come inside orbit of the Earth.
Electromagnetic Radiation: X-Ray
Apollo asteroids
Degeneracy
Thickest atmosphere
41. Dying large-mass stars lose their outer layers in a violent explosion creating large - chaotic remnants. these brighten like nova but are so much brighter and only occur ONCE PER STAR
Molecular Clouds
supernova
quasar
Eclipses of the Moons of Jupiter
42. Sudden blasts of gamma radiation from a very distant galaxy caused possibly by a supernova explosion.
Astronomical Unit
Dark Matter
Gamma ray bursts
Quasar
43. Large bulge - tightly wound spiral arms - relatively few h2 regions and are smooth
Heliocentric
cosmological principle
Sa spiral galaxy
Gamma ray bursts
44. The ratio of the actual density of the universe to the critical density. (actual density divided by the critical density
bulge
density parameter
slowest rotation
smallest diameter
45. A galaxy emitting large amounts of energy at long wavelengths.
radio galaxy
Supernova (You can be my supernova girl)
Eyepiece Lens
inferior planets
46. Any change in the speed or direction of an object's motion
deferent
Plague
Planck time
acceleration
47. We can infer the absolute magnitude of pulsating variable stars by measuring their pulsation periods. The longer the pulsations - the greater their luminosities. We then again measure their apparent magnitudes - compare it with their absolute magnitu
Extrasolar Planet
Europa (Jupiters moon)
Cepheid variables
Cepheid Variable
48. The amount an image is enlarged by a telescope
slowest rotation
Absorption Spectrum
Magnification
Color Index
49. The study of the universe as a whole.
cosmology
Halo
Cosmic Microwave Background
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.
50. The area behind a lens where images are resolved
Superior planets
Corona
Black Hole
Focal Plane