SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
Test your basic knowledge |
Earth Science
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. A mudflow composed chiefly of pyroclastic material on the flanks of a volcano.
estuary
Mesozoic
seismograph
lahar
2. One of several rock-forming minerals that contain at least 95% silica (quartz). and usually one or more other common elements.
orogeny
silicate
estuary
tide
3. A large area with common features that set it apart from other areas.
thermal spring
karst
region
Cenozoic
4. The process of one plate descending beneath another.
subduction
silicate
rapids
dust storm
5. The rock beneath the soil.
cone of depression
aftershock
bedrock
seastack
6. A large ridge or mound-like structure within a body of water that is built by calcareous organisms such as corals & red algae & and bivalves.
Earth system
legend
reef
water table
7. Any place where bedrock is visible on the surface of the Earth.
water table
outcrop
steppe
dust devil
8. The way in which a rock or mineral breaks in random patterns rather than cleaving
fracture
oceanic crust
Jupiter
groundtruthing
9. A lake of lava & usually basaltic & in a volcanic caldera.
rock
lava lake
cementation
pahoehoe
10. Till deposited from main body of glacier during ablation.
Venus
asthenosphere
reserves
ground moraine
11. Turbulent stream water flow down a steep gradient & but not as steep as in a waterfall.
rapids
karst
mid-ocean ridges
tide
12. The concept of a sequence of events involving the formation & alteration & destruction and reformation of rocks as a result of geologic processes.
telescope
rock cycle
wave height
basalt
13. The generally dark & more or less stable part of the organic matter in a soil & so well decomposed that the original sources cannot be identified.
humus
star
archipelago
dust bowl
14. The area immediately below the ground surface within which pore spaces are partially filled with water and partially filled with air.
zone of aeration
pipe
cementation
tide
15. A pillar formed as a stalactite and stalagmite meet.
plate
desertification
column
terrestrial
16. The remains of an extremely massive star pulled into a small volume by the force of gravity.
black hole
biogenic sediment
rapids
glacier
17. Where one plate slides beneath another plate as the two are pushed together & a subduction zone.
fluctuate
subduction zone
convergent boundary
ozone layer
18. A division of geologic time next smaller than the eon and larger than a period. Example: The Paleozoic era is in the Phanerozoic eon and includes & among others & the Devonian period.
continental divide
conduction
crater
era
19. A broad & mound-like mass of glacier ice that usually spreads radially outward from a central zone.
loess
shield volcano
siltation
ice sheet
20. The current geologic era & which began 66.4 million years ago and continues to the present.
Cenozoic
wave length
back swamp
chalk
21. The processes of weathering by which physical actions such as frost wedging break down a rock into fragments & involving no chemical change.
basaltic
abyssal plain
wind farm
disintegration (mechanical weathering)
22. A famous scientist who proposed that the Sun was the center of the solar system not the Earth. (Heliocentrism)
lava lake
volcanic
scientific model
Copernicus & Nicholas
23. The partial or complete blocking from view of one object by another.
eclipse
fossil
subduction
fluctuate
24. A rock that has crystallized from a molten state.
continental crust
Paleozoic
igneous rock
ice shelf
25. Bent rock strata.
exotic river
ground water
fold
icecap
26. A waterway from open ocean into a lagoon.
drift
denudation
moon
tidal inlet
27. A vent on the seafloor from which hydrothermal fluids are emitted. Upon mixing with seawater and cooling & the fluids precipitate a cloud of fine-grained sulfide minerals that resembles a cloud of black smoke.
black smoker
atoll
weathering
orogeny
28. Weathering processes that are the result of chemical reactions. Example: the transformation of orthoclase to kaolinite.
chalk
decomposition (chemical weathering)
cartographer
quarrying
29. The green pigment in the cells of many plants that enables them to use sunlight to convert carbon dioxide and water into carbohydrates in the process called photosynthesis.
isthmus
chlorophyll
Paleozoic
gravity
30. Any solid material that has settled out of a state of suspension in liquid.
Proterozoic
Mercury
sediment
Mars
31. The upper horizons in a soil & through which gravitational moisture travels & removing soluble decomposition products.
asteroid
nova -- (Supernova)
zone of leaching
epoch
32. The point on the Earth's surface where a magnetic needle points vertically downward (north magnetic pole) or vertically upward (south magnetic pole).
jetty
chlorophyll
Mars
magnetic pole
33. 1. A low & bowl-shaped area of land surrounded by higher lands. 2. any large depression in which sediments are deposited.
nautical mile
channelization
galaxy
basin
34. The environment where a particular plant or animal is normally found.
barrier beaches
compression fossil
habitat
silicate
35. To wash or scrub away.
scour
salinization
atoll
legend
36. A measure of the strength of an earthquake based on the amount of movement recorded by a seismograph . compare Richter scale.
magnitude
acid rain
current speed
gemstone
37. Any molten material that is extrusive or volcanic & or the rock that forms from a molten extrusive. Molten rock that flows at the Earth's surface.
lava
black smoker
cave
plain
38. The transformation of a soil from a solid to a liquid state as the result of increased pore pressure.
crevasse
liquefaction
Milky Way
pathogen
39. Any natural concentration of a valuable material in the Earth's crust & whether that material can be extracted profitably or not.
mineral deposit
fluctuate
Mesozoic
universe
40. That portion of the Earth below the crust and reaching to about 2 &780 km & where a transition zone of about 100 km thickness separates it from the core.
mantle
fracture
scale
Mars
41. A permeable region of rock or soil through which ground water can move.
desertification
aquifer
basin
plate boundaries
42. A general term including both oil and natural gas.
petroleum
exotic river
casts
salinization
43. An area subject to dust storms & especially south central United States .
dust bowl
trench
soil
back swamp
44. A guide to reading a map that typically contains distance scales & arrows indicating direction & and/or explanations of symbols used.
current speed
humus
Milky Way
legend
45. The top of a wave.
ozone
wave crest
sedimentary rock
nova -- (Supernova)
46. A rigid segment of the Earth's lithosphere that moves horizontally and adjoins other plates along zones of seismic activity. Plates may include portions of both continents and ocean basins.
sediment
plate
galaxy
humid
47. A Hawaiian term for a basaltic lava flow with a smooth & or ropy surface.
moraine
geologic time scale
intensity
pahoehoe
48. The most recent eon of geologic time beginning 570 million years ago and continuing to the present.
Proterozoic
ice sheet
Phanerozoic
salinity
49. An accumulation of wind driven sand into a distinctive shape.
sod
seismology
sand dune
island arc
50. The partial or complete blocking from view of one object by another.
equator
compression fossil
levees
eclipse