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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 mass of an object divided by its volume
anorthosite
Degeneracy
Astronomical Unit
density
2. A force exerted by reflecting sunlight
radiation pressure
Kirkwood gaps
Sc spiral galaxy
Primary Mirror
3. When the Sun moves from south to north across the celestial equator (about March 21)
Main Sequence Stars
AGN
accretion disk
Vernal Equinox
4. A faint - remarkably uniform distribution of radiation in space
chemical differentiation
The Local Group
Degeneracy
Cosmic Microwave Background
5. A term referring to the orbital character of stars near the Sun
Differential Rotation
Bok Globule
quasar
cosmology
6. Jupiter
Callisto (Jupiter)
Autumnal Equinox
Instability strip
Largest diameter
7. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE
meteorite
Red Giant
Europa (Jupiters moon)
great dark spots
8. Cold aggregates of gas - large and contain a huge amount of matter - so cold that molecules stick together to form molecules.
Galilean satellite
MOONS: roundest shape
molecular clouds
meteor shower
9. The law that describes the blackbody curve - and let to quantum mechanics.
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10. Places in the asteroid belt - caused by resonance with Jupiter - where there are no asteroids
Kirkwood gaps
inferior planets
Secondary Mirror
slowest rotation
11. A force exerted by reflecting sunlight
AGN
Hydrostatic Equilibrium
radiation pressure
Stephen-Boltzman Law
12. A word used in astronomy to describe all elements besides hydrogen and helium
direct motion
Metals
Callisto (Jupiter)
Inverse Square Law
13. The distance light travels in one year (=9.46x10^12km).
HII Region
Maria
Light-Year
Electromagnetic Radiation: X-Ray
14. The entity from which the whole universe is postulated to have come from.
Convection
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.
cosmic singularity
slowest rotation
15. The rock that makes up the lunar maria
If it is in a denser medium - such as glass - it will move slower
mare basalt
Secondary Mirror
Light Gathering Power
16. Ganymede
MOONS: largest size
Quasar
nova
A family of radiant energy- includes light
17. Then the Sun moves from north to south across the celestial equator (about September 23)
Kuiper belt
Neutron Star
Autumnal Equinox
Galilean satellite
18. Material that shoots rapidly out into space. Flares cause Auroras
Apparent Magnitude
Flare
Vernal Equinox
meteorite
19. Centered on the Earth
Geocentric
The Big Bang Theory resolves Olber's Paradox
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.
Bok Globule
20. A galaxy sending out a stream of material from its nucleus
Enke gap
Open - flat - and closed.
Radio Galaxy
Meridian
21. The amount of density needed to stop the universe from expanding and to begin the big crunch represented by Pc
supernova
synchronous rotation
standard candle
critical density
22. The high- temperatature outer layer of the sun
Corona
radio lobe
Dwarf planets
Open - flat - and closed.
23. A star without enough mass to begin hydrogen fusion
mass
Resolving Power
Brown dwarf
White Dwarf
24. Orbit in Jupiters orbit
Trojan asteroids
Kirkwood gaps
opposition
aphelion
25. A measure of the ability of a telescope to see fine detail
Resolving Power
A family of radiant energy- includes light
Photon
Reflector
26. The apparent backward motion of a planet against the background of stars.
Kirkwood gaps
belt
Spectroscopic parallax
retrograde motion
27. The oldest part of the Milky Way
Hydrostatic Equilibrium
Halo
accretion disk
interstellar dust
28. The organized effort to find life elsewhere in the universe. (Search for Extra-Terrestrial Intelligence)
SETI
density
zone
Radiative Diffusion
29. Europa
MOONS: roundest shape
radio galaxy
Sb spiral galaxy
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
30. A repeated - periodic push or pull capable of summing into a larger push or pull
Superior planets
Cosmological Principle
resonance
Umbra
31. The assumption that the universe is isotropic (same in all directions) and homogeneous (Same everywhere throughout)
CMB
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
A family of radiant energy- includes light
cosmological principle
32. Jupiter
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.
contrast northern lowlands and the southern highlands of mars...
Largest diameter
Reflector
33. The point where an inferior planet is as far away from the sun as it can be (as seen from the Earth)
Drake equation
Blackbody Curve
greatest elongation
Spectroscopic Parallax
34. Sc galaxies
plate tectonics
Flocculent spirals
greatest elongation
Electromagnetic Radiation: Visible Light
35. The crust of a meteorite caused by its entry into Earth's atmosphere
fusion crust
Sa spiral galaxy
Make up of the terrestrial planets
Lagrangian Razor
36. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder
differential rotation
Ganymede (Jupiter)
shape and color of ELLIPTICAL galaxies
Precession
37. Sc galaxies where star formation and destruction is so rapid that supernova explosions are mainly responsible for compressing gas to create new stars.
Thermal Equilibrium
Prominence
self-propagating star formation
plate tectonics
38. 100 nm 10 nm
Oort cloud
Electromagnetic Radiation: Ultraviolet Light
coma
Lagrangian Razor
39. First accurately measured the speed of light in a vacuum
Hubble law
The Big Bang Theory resolves Olber's Paradox
aphelion
Ole Roemer
40. The faint glow of light left over from the Big Bang. cosmic microwave background are the photons that remain after the big bang that have not turned into matter.
Electron
CMB
cosmic fireball
evidence of water on mars
41. An energetic event taking place in the early universe
Particle Horizon
3 reasons we orbit satellites to observe universe
smallest diameter
Gamma-ray Burst
42. An element of a highly efficient - two-dimensional electronic light detector
scarp
Pixel
Dark Nebula
Red Giant Branch Star
43. Matter so dense that even light cannot escape its gravity
Parallax
quasar
opposition
Black Hole
44. Mercury and venus
standard candle
meteorite
planetesimal
fewest moons
45. A cool collection of gas and dust silhouetted against a brighter background of stars and/or gas
Electromagnetic Radiation: Visible Light
Hubble law
Dark Nebula
Enke gap
46. A measure of how an object resists accelerating when acted upon by a force. It is proportional the amount of matter in an object
mass
H-are Diagram
Active Optics
condensation temperature
47. The mirror that determines the focus configuration of a reflector
plate tectonics
Secondary Mirror
MOONS: largest size
tectonics of Earth
48. A massive variable star used to find distances to the galaxies or clusters that contain them.
acceleration
Precession
Trojan asteroids
Cepheid Variable
49. An efficient - two-dimensional electronic light detector. Common in digital cameras - they revolutionized astronomical imaging
CCD
Sunspot cycle
acceleration
direct motion
50. A spinning neutron star
Pulsar
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.
Titus-Bode Law
Gamma-ray Burst