Test your basic knowledge |

Earth Science

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 hole or basin cut into bedrock of a stream by the abrasive action of pebbles and sand swirled by turbulent stream flow.






2. A mudflow composed chiefly of pyroclastic material on the flanks of a volcano.






3. The elevation at which snow persists throughout the year.






4. A disease-causing organism or entity & such as a bacterium or virus.






5. A hot & gaseous & self-luminous celestial body & as the Sun.






6. Iron & aluminum & magnesium & manganese & and titanium. Ores of the abundant metals only need to be 3 - 5 times as metal-rich as average rock.






7. Deposition of fine mineral particles (silt) on the beds of streams or lakes.






8. A sea level change due to change in load on Earth's crust.






9. The process of one plate descending beneath another.






10. An area subject to dust storms & especially south central United States .






11. The closest galaxy to the Milky way. It is approximately 2 million light-years away.






12. A lake in an abandoned meander.






13. 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.






14. A building that contains one or more telescopes.






15. The theory of Plate Tectonics states that the Earth's crust is fragmented into a dozen or more large and small pieces floating on a semi-molten mantle.






16. A ridge of high water associated with a hurricane and which floods over the shore .






17. A rock changed from its original form and/or composition by heat & pressure &shearing stress & or chemically active fluids & or some combination of them.






18. Igneous. Antonym of intrusive. Synonym of volcanic. Pertaining to igneous rocks or features formed from lava released on the Earth's surface.






19. The rock beneath the soil.






20. A planetary satellite.






21. Any seismic wave that travels through the body of Earth & rather than along its surface.






22. Long narrow beaches separated in many places from the mainland by lagoons.






23. A person who makes maps.






24. An eruption of lava that takes place from a fracture & usually without producing a cone.






25. Turbulent stream water flow down a steep gradient & but not as steep as in a waterfall.






26. Where two plates collide to form mountains.






27. The processes of weathering by which physical actions such as frost wedging break down a rock into fragments & involving no chemical change.






28. Any natural concentration of a valuable material in the Earth's crust & whether that material can be extracted profitably or not.






29. An area where fresh water comes into contact with seawater & usually in a partly enclosed coastal body of water; a mix of fresh and salt water where the current of a stream meets the tides.






30. The primary division of geologic time which are & from oldest to youngest & the Hadean & Archean & Proterozoic & and Phanerozoic eons.






31. A community of plants and/or animals and its physical environment & regarded as a unit.






32. The two days of the year on which neither hemisphere is tilted toward or away from the sun.






33. A general term including both oil and natural gas.






34. Materials that are found in nature that are useful or necessary for people to live.






35. An imaginary circle around the earth that represents the halfway mark between the North and South Poles and establishes the boundary between the Northern and Southern Hemispheres.






36. The innermost zone of Earth. It consists of two parts & an outer liquid section and an inner solid section & both chiefly of iron and nickel with about 10 percent lighter elements. It is surrounded by the mantle.






37. Highly mafic igneous volcanic rock & typically fine-grained and dark in color; rough volcanic equivalent of gabbro. Basalt is the most abundant volcanic rock in the Earth's crust.






38. Pertaining to or composed of granite & a coarse-grained igneous rock dominated by light-colored minerals & consisting of about 50 percent orthoclase & 25 percent quartz & and balance of feldspars and ferromagnesian silicates. Granite is commonly foun






39. Deep steep-sided depression in the ocean floor caused by the subduction of oceanic crust beneath either other oceanic crust or continental crust.






40. All unconsolidated materials above bedrock. Natural earthy materials on the Earth's surface & in places modified or even made by human activity & containing living matter & and supporting or capable of supporting plants out of doors.






41. Objects revolving around the sun that are too small and too numerous to be considered planets.






42. The processes of weathering by which physical actions such as frost wedging break down a rock into fragments & involving no chemical change.






43. A fracture or zone of fractures along the boundaries of tectonic plates where movement has taken place.






44. A system involving continuous interaction of the solid Earth & the atmosphere & the oceans and living things.






45. An era of geologic time lasting from 570 to 245 million years ago.






46. 1. A steep-walled & usually conical depression at the summit or on the flanks of a volcano & resulting from the explosive ejection of material from a vent. 2. A bowl-shaped depression with a raised & overturned rim produced by the impact of a meteori






47. The breaking away of ice from the front of the glacier when it ends in a lake or an ocean. Produces icebergs.






48. The line formed by the intersection of the axial plane of a fold with a bedding plane & marking where the bed shows its maximum curvature.






49. Deposition of fine mineral particles (silt) on the beds of streams or lakes.






50. A large amount of gas and dust in space & spread out in an immense volume.






Can you answer 50 questions in 15 minutes?



Let me suggest you:

Browse all subjects

Browse all tests

Most popular tests



Major Subjects

Tests & Exams


AP
CLEP
DSST
GRE
SAT
GMAT

Browse all subjects

Browse all tests

Most popular tests