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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. Moon in less than the angular diameter of the Sun.
Annular Eclipse
Hubble law
most eccentric orbit
roche limit
2. A large and bright but cool star.
Blackbody Curve
Celestial Equator
Negative - Diverge - Less than 1
Red Giant
3. Large nebula consisting of very cold gas and dust
Summer Solstice
Molecular Clouds
neutrino
meteoriod
4. A quantity measuring the stability of the Earth's atmosphere
partile horizon
Seeing
Continuous Spectrum
Most dense
5. The mirror that gathers the light in a reflector
Photosphere
Primary Mirror
Parsec
nucleus
6. A change in the appearance of the sun at the edge of the solar disk
epicycle
radio lobe
Limb darkening
regolith
7. Electromagnetic Radiation
Energy Level
A family of radiant energy- includes light
Filament
Instability strip
8. Approximate speed of light in a vacuum
300000 KM/sec
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
quasar
Nucleus
9. A small spherical dark nebula
Bok Globule
radio galaxy
Olber's paradox
self-propagating star formation
10. A fusion process in which a carbon atom transmutes to oxygen and back - creating a helium atom in the process
Bok Globule
CNO Cycle
Particle Horizon
Prominence
11. The elementary building blocks from which protons and neutrons are formed.
quarks
Seyfert galaxy
Heliocentric
partile horizon
12. Galaxies whose nuclei emit jets of materil at high speeds. material comes from supermassive black holes
Bulge
standard candle
radio galaxy
Granules
13. The process that powers the sun and hydrogen bombs
Dark matter candidates
Photometry
quarks
Thermonuclear Fusion
14. The time when the universe cooled sufficiently for atoms to exist. radiation dominated= first 300000 years - THEN era of recombination turns into matter dominated for next.
era of recombination
MOONS: roundest shape
chondrite
Ionization
15. The equation that describes how matter equates with energy
Electromagnetic Radiation: Ultraviolet Light
E=mc2
terrestrial planet
Olber's paradox
16. When the Sun moves from south to north across the celestial equator (about March 21)
Dark matter candidates
Vernal Equinox
deferent
How is winding dilemma solved?
17. Jupiter
terrestrial planet
Colestial Pole
Largest diameter
Seeing
18. The science of measuring the apparent magnitudes of stars by imaging them through different filters.
Photometry
Neutron Star
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
weight
19. 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.
meteorite
difference between maria and highlands of the moon.
H-are Diagram
quasar
20. VENUS
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
reflection star clusters
Kirchhoff's Law
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
21. The distance light travels in one year (=9.46x10^12km).
Magnification
Wein's Law
Light-Year
Gravitational Lens
22. In what chemical form are jupiters nitrogen - carbon and oxygen?
Eyepiece Lens
Ammonia - methane - and water
meteorite
Population 1 vs Population 2 stars
23. Small bulges - loosely wound - massive arms - arms have many H2 regions and look very lumpy
shape and color of ELLIPTICAL galaxies
Triple Alpha rocess
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
Sc spiral galaxy
24. Venus
Plague
isotropic
hottest surface
open star clusters
25. A perfect absorber and radiator of electromagnetic radiation.
Make up of the jovian planets
Blackbody
Horizontal Branch Star
accretion
26. The location around an atom where an electron resides.
Radiative Diffusion
Energy Level
MOONS: largest size
anorthosite
27. The study of the universe as a whole.
cosmology
direct motion
Oort cloud
great dark spots
28. 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)
Nebula
Dwarf planets
matter dominated universe
bulge
29. Sc galaxies where star formation and destruction is so rapid that supernova explosions are mainly responsible for compressing gas to create new stars.
nucleus
E=mc2
self-propagating star formation
Focal Plane
30. Small bulges - loosely wound - massive arms - arms have many H2 regions and look very lumpy
belt
Sc spiral galaxy
Photon
reflection star clusters
31. A measure of the force of gravity on an object
Jupiters red spot
weight
Hubble law
Disk
32. Venus
MOONS: larger than mercury
Nova
Vernal Equinox
Roundest orbit
33. The rock that makes up the lunar maria
Apparent Magnitude
conjunction
Seeing
mare basalt
34. A force exerted by reflecting sunlight
Occam's razor
Doppler Shift
How is winding dilemma solved?
radiation pressure
35. Orbit in Jupiters orbit
superclusters
Lagrangian Razor
Trojan asteroids
gravity
36. The law that predicts the possible types of spectra.
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37. In a CLOSED UNIVERSE - the curvature of space-time is _________. Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is _____.
superclusters
differential rotation
Eclipses of the Moons of Jupiter
Positive - Converge - Greater than 1
38. The organization of clusters of galaxies into sheets and strings
Convection
gravity
era of recombination
Supercluster
39. The amount of density needed to stop the universe from expanding and to begin the big crunch represented by Pc
Photosphere
meteorite
critical density
Celestial Equator
40. The high- temperatature outer layer of the sun
Electromagnetic Radiation: Ultraviolet Light
Corona
Perihelion
protostar
41. Rich= dense crowded cores of galaxies - poor= few members and a looser organization of galaxies
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
Titus-Bode Law
Rich vs poor clusters
Turn off Point
42. 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
roche limit
Asymptotic giant Branch Star
Blackbody Curve
gravity
43. A very low mass particle formed in solar fusion reactions that reacts only weakly with matter
neutrino
Halo
radiation pressure
roche limit
44. When particles are compressed to an unnatural state where their pressure is not related to their temperature
Bok Globule
Black Hole
Limb darkening
Degeneracy
45. The law that predicts the possible types of spectra.
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46. Why does the earth have few craters while the moon has many?
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
radio lobe
The Big Bang Theory
Cepheid Variable
47. Matter that reveals itself only through its gravitational attraction
Dark Matter
Zenith
Hipparchus
Occam's razor
48. Centered on the Earth
The Big Bang Theory
Geocentric
Lagrangian Razor
rotation curve=winding dilemma?
49. Clouds of low density gas often found glowing faintly on either side of an AGN.
radio lobe
planetary nebula
Absorption Spectrum
radio galaxy
50. The crust of a meteorite caused by its entry into Earth's atmosphere
Halo
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.
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
fusion crust