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 cavity in a lava & formed by the entrapment of a gas bubble during solidification of the lava.






2. Swamp that forms in the low lying flood plain behind a levee.






3. A narrow strip of land that has water on either side and connects two larger bodies of water.






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






5. The average weather conditions of an area over many years & as measured by temperature & wind speed & and precipitation.






6. Heat extracted from the Earth for use as an power source.






7. Reduction of pore space between individual particles as the result of overlying sediments or of tectonic movements.






8. Produced as a wave steepens and falls forward as the wave nears the shore.






9. One of several rock-forming minerals that contain at least 95% silica (quartz). and usually one or more other common elements.






10. 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.






11. A curved belt of volcanic islands lying above a subduction zone.






12. Of or relating to or containing basalt & a dark & dense & extrusive rock that has a silica content of 40% to 50% and makes up most of the ocean floor.






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






14. The area bordering a stream over which water spreads when the stream tops its channel banks.






15. Woodland that usually gets at least 100 inches of rain each year.






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






17. The effect of water and carbon dioxide absorbing outgoing infrared radiation & raising a system's temperature. The term is generally used with reference to the Earth's temperature & although it can also be applied to other systems & such as greenhous






18. A geometrical form taken by a mineral & giving external expression to orderly internal atomic arrangement.






19. Enormous & thick sheets of rock that are part of the Earth's upper mantle that move and adjoin each other along zones of seismic activity. Many tectonic plates extend underneath both continents and sea floor.






20. Bent rock strata.






21. The prediction that climate will warm as a result of the addition to the atmosphere of humanly produced greenhouse gases.






22. Deserts in zones of descending air between 25 degrees and 30 degrees north and south latitude.






23. Lies half way between the north and south magnetic poles.






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






25. Open pit mining & typically for coal.






26. Containing moisture.






27. The explosion of a dying giant or supergiant star.






28. The seaward edge of coast between low tide and effective wave action.






29. An area of land that delivers runoff water & sediment & and dissolved substances to surface water bodies & such as rivers or lakes. All watersheds consist of boundaries & a basin and collection areas.






30. 1. Breach in a natural levee . 2. Deep crevice or open fracture in glacier ice.






31. A large area of flat or nearly flat land.






32. (Latin- Sol & Greek- Helios)the closest star to Earth. It is a giant ball of gas without any solid surface.






33. The areas of & in & or constituting a city.






34. A wall built out from the shore & usually at perpendicular to it to trap sand carried by longshore currents .






35. The portion of the continental margin that extends as a gently sloping surface from the shoreline seaward to a marked change in slope at the top of the continental slope . Seaward depth averages about 130 m.






36. The concept of a sequence of events involving the formation & alteration & destruction and reformation of rocks as a result of geologic processes.






37. The layer of gases (air) & that surrounds a planet or moon.






38. A natural open space underground & large enough for a person to enter. Most commonly occur by the dissolution of soluble rocks & generally limestone.






39. The process by which a binding & or cementing & agent is precipitated in spaces among individual particles of a deposit. Common cementing agents are calcite & quartz & and dolomite.






40. A group of stars that appear to make a pattern in the sky. The Big Dipper is a constellation.






41. Destruction of the ozone layer caused by the release of CFC's (chlorofluorocarbons) into the atmosphere which react chemically with ozone and break it down into different gases.






42. The rise and fall of sea level caused by the gravitational pull of the Sun and Moon on the Earth.






43. The theory that states that the present-day continents are the fragmented pieces of preexisting larger landmasses called supercontinents.






44. The very small particles of dirt & soot & and other pollutants that are present in the air.






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






46. The upper horizons in a soil & through which gravitational moisture travels & removing soluble decomposition products.






47. Formed when an organism is flattened (compressed) and a thin film of organic material from its body is left in the rock.






48. The production of living matter by organisms that make food using sunlight or chemicals. Usually expressed as grams of carbon per square meter per year.






49. 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.






50. Occurs at the intersection of the water table with the ground surface.