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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 rock that makes up the lunar maria
mare basalt
Absorption Spectrum
retrograde motion
Pixel
2. The slow wobble of the Earth on its rotation axis.
chondrite
belt
Secondary Mirror
Precession
3. The rotation period of the Earth measured relative to the stars.
Autumnal Equinox
great dark spots
planetesimal
Sidereal Day
4. The rock that makes up the lunar highlands
anorthosite
protostar
Hubble constant
MOONS: largest size
5. The crust of a meteorite caused by its entry into Earth's atmosphere
3 reasons we orbit satellites to observe universe
fusion crust
Flare
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
6. A fusion process in which a carbon atom transmutes to oxygen and back - creating a helium atom in the process
widmanstatten pattern
differential rotation
CNO Cycle
Annular Eclipse
7. A galaxy sending out a stream of material from its nucleus
Radio Galaxy
cosmology
Instability strip
Supernova (You can be my supernova girl)
8. Jupiter - Saturn - Uranus - Neptune
We don't know. It might be but does not have to be.
Granules
Jovian Planets
meteor shower
9. That which is responsible for Jupiter's magnetic field
Spectroscopy
Inverse Square Law
Liquid metallic hydrogen
Dwarf planets
10. A two-filter measure of the color - and hence temperature - of a star.
Color Index
Apparent Magnitude
Flat - Flat
H-are Diagram
11. Milky way galaxy is a member - a small poor cluster-about 30 galaxies
density waves
Largest diameter
quasar
The Local Group
12. The state of having a balance between inflowing and outflowing heat-- the temp at every radial point is different but constant
Thermal Equilibrium
Planetary Nebula
CCD
A family of radiant energy- includes light
13. The shadow area behind the Earth or Moon where the Sun is completely obscured.
Refractor
Umbra
Ammonia - methane - and water
asteroid
14. The process that powers the sun and hydrogen bombs
epicycle
Apollo asteroids
cosmological principle
Thermonuclear Fusion
15. Mercury and venus
Thermonuclear Fusion
fewest moons
Asymptotic giant Branch Star
Black Hole
16. The part of the Milky way that has on-going star formation
Galilean satellite
Photosphere
resonance
Disk
17. A measure of the force of gravity on an object
H-are Diagram
weight
Ecliptic
Density Wave
18. A particle of light.
Pulsar
Photon
zone
Metals
19. A spherical shell of comets that orbit the sun at a great distance (roughly two light years from the sun)
Summer Solstice
Oort cloud
Thickest atmosphere
Positive - Converge - Greater than 1
20. A word meaning 'the same everywhere throughout.'
homogeneous
Atomic Number
Steady State Theory (Leads to Olber's Paradox)
Flat - Flat
21. The class of all objects having high energy radiation coming from their nuclei. Active Galactic Nucleus- Blazars - Quasars - Radio and Emit synchrotron radiation
Photon
AGN
Inverse Square Law
Trojan asteroids
22. The Greek philosopher responsible for making the stellar magnitude scale.
Flat - Flat
mass
Hipparchus
Absorption Spectrum
23. Venus
CNO Cycle
radio lobe
Ole Roemer
Roundest orbit
24. Saturn
Pulsar
least dense
interstellar dust
Big Crunch
25. A star fusing hydrogen to helium in it's core
meteorite
greehouse effects
Main Sequence Stars
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.
26. Plate tectonics due to thickness of crust and maintain their general form when they collide-where most volcanoes are.
Oort cloud
tectonics of Earth
Colestial Pole
semimajor axis
27. How is the Hubble Law consistent with an expanding universe?
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.
Sunspot cycle
matter dominated universe
cosmological principle
28. The family of radiant energy that includes light as a subset
radio lobe
radio galaxy
Electromagnetic Radiation
AGN
29. Mercury - Venus - Earth - Mars
Terrestrial Planets
Meridian
Zenith
Drake equation
30. Light-colored high-pressure bands in Jupiter's atmosphere
zone
Differential Rotation
planetesimal
Light Curve
31. The mirror that determines the focus configuration of a reflector
Cassegrain Focus
Ammonia - methane - and water
terrestrial planet
Secondary Mirror
32. A representation of the changes in color and brightness of an evolving protostar.
Main Sequence
Hyashi track
Spectral Lines
Thickest atmosphere
33. The mix of pure photon energy that emerged at the start of the universe.
Turn off Point
Coldest surface
cosmic fireball
Sidereal Day
34. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE
Seeing
Europa (Jupiters moon)
Electromagnetic Radiation: Visible Light
Dark matter candidates
35. A streak of light in the atmosphere
Winter Solstice
planetesimal
Proton-proton chain
meteor
36. The process similar to conduction by which energy moves from the solar core to the convective layer
conjunction
deferent
Radiative Diffusion
widmanstatten pattern
37. The 11 or 22 period on the sun durin which sunspots increase - decrease - change polarity - increase and decrease again.
Dwarf planets
Light: travels like a wave - detected like a particle
density parameter
Sunspot cycle
38. A rock or iron specimen that has fallen from space
Triple Alpha rocess
We don't know. It might be but does not have to be.
Wein's Law
meteorite
39. As open clusters age - they push gas away but dust remains this can reflect light giving the cluster a blue-ish color. also called reflection nebula
Plague
reflection star clusters
quasar
MOONS: most geologically active
40. When a planet lines up with the sun inthe sky
Flocculent spirals
Geocentric
conjunction
Lagrangian Razor
41. Clouds of low density gas often found glowing faintly on either side of an AGN.
radio lobe
Zenith
300000 KM/sec
radiation dominated universe
42. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder
cosmic singularity
supermassive black hole
shape and color of ELLIPTICAL galaxies
protostar
43. Flattened spherical distribution of old stars with some young stars too. 'hub' of Milky way - stars orbit with solid body speeds. Elongated into bar shape
bulge
Turn off Point
Oort cloud
Stephen-Boltzman Law
44. The family of radiant energy that includes light as a subset
roche limit
Electromagnetic Radiation
Steady State Theory (Leads to Olber's Paradox)
shape and color of ELLIPTICAL galaxies
45. The amount of density needed to stop the universe from expanding and to begin the big crunch represented by Pc
Quasar
Electromagnetic Radiation: Gamma Ray
critical density
Thermonuclear Fusion
46. The ratio of the actual density of the universe to the critical density. (actual density divided by the critical density
Granules
deferent
Filament
density parameter
47. The elementary building blocks from which protons and neutrons are formed.
scarp
quarks
Dark matter candidates
Electromagnetic Radiation: Gamma Ray
48. First accurately measured the speed of light in a vacuum
roche limit
Ole Roemer
Hubble law
density
49. An important quality of telescopes that increases as the square of the primary mirror or objective lens
Terrestrial Planets
Halo
Light Gathering Power
Doppler Shift
50. A younger cluster of stars - found in the galaxy disk
widmanstatten pattern
Open Cluster
Galilean satellite
White Dwarf