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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. Latin for 'cloud'. A word used to describe the collections of gas and dust in the Milky Way and other galaxies
fusion crust
Wein's Law
Nebula
Convection
2. When massive objects bend space and time enough to create multiple images of an object located behind them
Gravitational Lens
Radio Galaxy
fusion crust
Dark matter candidates
3. Radiation given off by electrons accelerating in a magnetic field
Synchrotron Rotation
Inverse Square Law
Ground State
Hubble law
4. Sa - Sb galaxies where two magnificent arms wind their way from nucleus out in a symmetrical manner.
Ground State
Grand design spirals
terrestrial planet
Light Curve
5. A crystalline patter found in iron meteorites
Europa (Jupiters moon)
Oort Cloud
widmanstatten pattern
Rich vs poor clusters
6. The high- temperatature outer layer of the sun
Corona
Thickest atmosphere
Shepherd satellite
Limb darkening
7. When the Sun is farthest north of the celestial equator (about June 22)
Summer Solstice
Light Pollution
Thermal Equilibrium
Poor Cluster
8. A star that blows itself apart
Supernova (You can be my supernova girl)
SETI
Black Hole
Chromosphere
9. Distance from sun to nucleus- 8 kiloparsecs (26000 LY) - diameter of Milky way- 150000 LY - length for sun to orbit once around milky way- 250 million years
matter dominated universe
radiation dominated universe
MOONS: most geologically active
Milky way Galaxy
10. A massive variable star used to find distances to the galaxies or clusters that contain them.
Apollo asteroids
greehouse effects
Cepheid Variable
Black Hole
11. A star without enough mass to begin hydrogen fusion
Secondary Mirror
Rich vs poor clusters
Brown dwarf
Big Crunch
12. A spinning neutron star
Pulsar
era of recombination
quasar
Light Gathering Power
13. The mix of pure photon energy that emerged at the start of the universe.
force
Chromosphere
cosmic fireball
SETI
14. A telescope that uses mirrors to focus light
Reflector
interstellar dust
AGN
Focal Length
15. A word meaning 'the same everywhere throughout.'
regolith
Callisto (Jupiter)
supernova
homogeneous
16. The material from which the solar system formed
Continuous Spectrum
greehouse effects
Degeneracy
solar nebula
17. Theory virtually demands that the geometry of the universe be ______. Results of measuring lumps in the cosmic background radiation indicate that the universe geometry is ________.
difference between maria and highlands of the moon.
Corona
Objective Lens
Flat - Flat
18. A force exerted by reflecting sunlight
fastest rotation
radiation pressure
CMB
Hydrostatic Equilibrium
19. The slow wobble of the Earth on its rotation axis.
Precession
Kuiper belt
superclusters
Poor Cluster
20. The distance between a lens and its focal plane
Cosmic Microwave Background (CMB)
Asymptotic giant Branch Star
regolith
Focal Length
21. When the Sun is farthest north of the celestial equator (about June 22)
MOONS: largest size
Summer Solstice
Stephen-Boltzman Law
Big Bang
22. Light-colored high-pressure bands in Jupiter's atmosphere
chemical differentiation
Electromagnetic Radiation: Ultraviolet Light
Turn off Point
zone
23. The rock that makes up the lunar maria
Ionization
mare basalt
radiant
Eyepiece Lens
24. Elliptical orbits that come inside orbit of the Earth.
Electromagnetic Radiation: Ultraviolet Light
Olber's paradox
Emission Spectrum
Apollo asteroids
25. A technique using computer-controlled mirrors to sharpen images distorted by the atmosphere
Metals
Active Optics
Red Giant
Blackbody Curve
26. A younger cluster of stars - found in the galaxy disk
Photosphere
Open Cluster
Resolving Power
Chandrasekhar Limit
27. The entity from which the whole universe is postulated to have come from.
Hipparchus
cosmic singularity
rotation curve = dark matter?
H2 Regions
28. That which is responsible for Jupiter's magnetic field
Positive - Converge - Greater than 1
Neutron Star
Apollo asteroids
Liquid metallic hydrogen
29. Wave- only waves cause an interference pattern when passing through a double slit - particle- only particles deposit energy at specific locations (the way an image builds up on digital camera)
Corona
critical density
Electromagnetic Radiation: Microwave
Light: travels like a wave - detected like a particle
30. The point where a superior planet is as far away from the sun as it can be (as seen from the Earth)
opposition
Neutron Star
radiant
direct motion
31. A long-lived high-pressure bulge in Jupiter's southern hemisphere
H-are Diagram
great red spot
Perihelion
Objective Lens
32. The point where an inferior planet is as far away from the sun as it can be (as seen from the Earth)
Callisto (Jupiter)
Kirkwood gaps
greatest elongation
Ganymede (Jupiter)
33. Dark areas on the sun that are cooler than the surrounding photosphere
Drake equation
Resolving Power
Gravity only pulls matter back together. Therefore - if gravity is the only force that operates on cosmic scales then the expansion of the universe should decrease with time. The critical density is the value of matter density sufficient to halt the
Sunspots
34. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE
Focal Plane
Europa (Jupiters moon)
Proton-proton chain
regolith
35. Form honeycomb like patterns surrounding empty or nearly empty voids.
Flat - Flat
superclusters
open star clusters
fusion crust
36. Large nebula consisting of very cold gas and dust
Molecular Clouds
Cepheid variables
Lagrangian Razor
Light Curve
37. A galaxy sending out a stream of material from its nucleus
Radio Galaxy
Celestial Sphere
partile horizon
planetesimal
38. The oldest grouping of stars - found in the galaxy halo
300000 KM/sec
Globular Cluster
tectonics of Venus
Quasar
39. The philosophical stand that says a simpler explanation is more likely to be correct than a complicated one.
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40. The amount an image is enlarged by a telescope
Magnification
fastest rotation
Void
Lagrangian Razor
41. A bright area of higher temperature that often proceeds the formation of sunspots.
opposition
accretion disk
Sb spiral galaxy
Plague
42. A cool collection of gas and dust silhouetted against a brighter background of stars and/or gas
Dark Nebula
Plague
Largest diameter
widmanstatten pattern
43. VENUS
aphelion
Horizontal Branch Star
Sa spiral galaxy
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
44. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE
era of recombination
Europa (Jupiters moon)
Meridian
tectonics of Earth
45. A planet orbiting about a distant star
Extrasolar Planet
coma
Reflector
Shepherd satellite
46. Sudden blasts of gamma radiation from a very distant galaxy caused possibly by a supernova explosion.
Open Cluster
era of recombination
Black Hole
Gamma ray bursts
47. When the Moon entirely blocks the Sun.
shape and color of ELLIPTICAL galaxies
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
great dark spots
Total Eclipse
48. Plate tectonics due to thickness of crust and maintain their general form when they collide-where most volcanoes are.
How is winding dilemma solved?
tectonics of Earth
Electromagnetic Radiation
Parallax
49. In Ptolemy's geocentric solar system - the large circle on which a planet's epicycle moved around the Earth.
Hyashi track
deferent
meteoriod
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.
50. First accurately measured the speed of light in a vacuum
meteorite
Ole Roemer
cosmic fireball
shape and color of SPIRAL galaxies