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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. Milky way galaxy is a member - a small poor cluster-about 30 galaxies
Jupiters red spot
Radio Galaxy
The Local Group
hottest surface
2. The dimming of starlight by intervening dust
H2 Regions
Big Crunch
accretion disk
Interstellar Extinction
3. Jupiter
conjunction
Geocentric
most moons
Bulge
4. A star fusing hydrogen to helium in it's core
Main Sequence Stars
OB Associations
Particle Horizon
Cepheid Variable
5. In what chemical form are jupiters nitrogen - carbon and oxygen?
Limb darkening
Ammonia - methane - and water
Hyashi track
Objective Lens
6. The era when the ratio of matter to energy greatly favored matter. (verses radiation dominated universe where it was opaque. Matter is now dominated by gravity not photons)
most moons
matter dominated universe
accretion disk
chondrite
7. The distance light travels in one year (=9.46x10^12km).
chemical differentiation
Make up of the jovian planets
Light-Year
Kuiper belt
8. The cosmological principle is the assumption that the universe is isotropic and homogeneous.The Big Bang assumes it to be a correct principle so that what we observe is exactly like What is too far away to be observed.
Cosmological Principle
Io (jupiters moon)
Blackbody
Cosmic Microwave Background (CMB)
9. The rock that makes up the lunar maria
supernova
mare basalt
greehouse effects
meteor
10. Formed rapidly - collapsed slower into disk shape - star birth rate is low but lasts longer and ongoing - contain higher mass blue stars.
Turn off Point
Main Sequence
Total Eclipse
shape and color of SPIRAL galaxies
11. The science of measuring the apparent magnitudes of stars by imaging them through different filters.
Drake equation
Photometry
meteoriod
Color Index
12. A method of finding a star's distance from its absolute magnitude and spectral type or color.
Drake equation
Spectroscopic Parallax
Liquid metallic hydrogen
Plague
13. The rotation period of the Earth measured relative to the Sun.
Synodic Day
asteroid
critical density
synchrotron radiation
14. Places in the asteroid belt - caused by resonance with Jupiter - where there are no asteroids
bulge
Kirkwood gaps
Horizontal Branch Star
Electromagnetic Radiation
15. The relation that tells how light dims with distance.
plate tectonics
Eclipses of the Moons of Jupiter
Inverse Square Law
gravity
16. Sulfurous volcanoes - pools of liquid sulfur - surface resembles cheese pizza ACTIVE SURFACE
Io (jupiters moon)
mapping the structure of Milky Way disk
Negative - Diverge - Less than 1
Photometry
17. Venus
Thermonuclear Fusion
The Big Bang Theory
Absolute Magnitude
Roundest orbit
18. Milky way galaxy is a member - a small poor cluster-about 30 galaxies
deferent
The Local Group
Flat - Flat
We don't know. It might be but does not have to be.
19. 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?
Halo
quarks
Halo
20. Sa - Sb galaxies where two magnificent arms wind their way from nucleus out in a symmetrical manner.
Electromagnetic Radiation: Ultraviolet Light
Oort cloud
Grand design spirals
radio galaxy
21. That which is responsible for Jupiter's magnetic field
Winter Solstice
matter dominated universe
Liquid metallic hydrogen
Radio Galaxy
22. 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.
difference between maria and highlands of the moon.
Focal Plane
radiation pressure
Liquid metallic hydrogen
23. A two-filter measure of the color - and hence temperature - of a star.
opposition
mare basalt
Color Index
Jupiters red spot
24. The mass of an object divided by its volume
Kuiper belt
asteroid
Annular Eclipse
density
25. The fusion process that turns three helium nuclei into a carbon nucleus
meteorite
Metals
Triple Alpha rocess
Granules
26. The slow wobble of the Earth on its rotation axis.
Blackbody Curve
Precession
Gravitational Lens
fastest rotation
27. Dying small mass stars lose their outer layers in a relatively gentle way - creating a round or bipolar nebula about the star (round like planets)
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.
rotation curve = dark matter?
planetary nebula
radiation dominated universe
28. The surface of the sun
Photosphere
Rich vs poor clusters
Celestial Sphere
MOONS: roundest shape
29. A crystalline patter found in iron meteorites
widmanstatten pattern
belt
Synodic Day
Photon
30. 10 cm -> 1 mm
Plank's Law
Pulsar
Electromagnetic Radiation: Microwave
partile horizon
31. What causes the zones and belts on jupiter and saturn?
Ole Roemer
Main Sequence Stars
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
Terrestrial Planets
32. A galaxy emitting large amounts of energy at long wavelengths.
Titus-Bode Law
Secondary Mirror
radio galaxy
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
33. The oldest grouping of stars - found in the galaxy halo
Nucleus
quasar
Globular Cluster
Open - flat - and closed.
34. Massive compact halo objects (MACHO) - weakly interacting massive particles (WIMPY's)
Dark matter candidates
Cosmological Principle
Self-Propogating Star Formation
Spectroscopic Parallax
35. A measure of the ability of a telescope to see fine detail
Flat - Remain Parallel - Exactly 1
molecular clouds
Resolving Power
Penumbra
36. The shadow area behind the Earth or Moon where the Sun is completely obscured.
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.
Pulsar
Umbra
Perihelion
37. Dark areas on the sun that are cooler than the surrounding photosphere
Sunspots
Terrestrial Planets
Heliocentric
Umbra
38. The gap etween saturn's A and B rings
Supernova (You can be my supernova girl)
Cassini division
Electromagnetic Radiation: Microwave
Filament
39. The material from which the solar system formed
tectonics of Venus
solar nebula
interstellar dust
Disk
40. Ancient stream channels - flood planes - and sedimentary-type rock. Frozen water is found in the polar ice caps and in the soil.
MOONS: thickest atmosphere
nova
Turn off Point
evidence of water on mars
41. The powdered stone fragments that make up the lunar 'soil'
Electromagnetic Radiation
matter dominated universe
Cosmic Microwave Background
regolith
42. In Ptolemy's geocentric solar system - the large circle on which a planet's epicycle moved around the Earth.
Thermal Equilibrium
deferent
cosmological red shift
disk
43. When the Sun is farthest north of the celestial equator (about June 22)
Color Index
Lagrangian Razor
Quasar
Summer Solstice
44. A change in the appearance of the sun at the edge of the solar disk
meteor shower
Limb darkening
Absolute Magnitude
Sunspots
45. When the Sun moves from south to north across the celestial equator (about March 21)
Rich Cluster
Vernal Equinox
Degeneracy
Radio Galaxy
46. The mirror that determines the focus configuration of a reflector
Secondary Mirror
Continuous Spectrum
Prominence
Proton-proton chain
47. A word meaning 'the same everywhere throughout.'
homogeneous
resonance
Winter Solstice
Enke gap
48. The number of protons in an atom.
Atomic Number
Ammonia - methane - and water
Continuous Spectrum
Olber's paradox
49. A star that blows itself apart
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
Supernova (You can be my supernova girl)
open star clusters
Photon
50. A telescope that uses mirrors to focus light
Filament
Reflector
The Big Bang Theory resolves Olber's Paradox
We don't know. It might be but does not have to be.