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. Heat transport by direct transfer of energy from one particle to another & without moving the particle to a new location.






2. The southern portion of the late Paleozoic supercontinent known as Pangea. It means & literally 'Land of the Gonds' (a people of the Indian subcontinent).The supercontinent existed from Cambrian to Jurassic time & mainly composed of South America &






3. The Sun with all the celestial bodies that revolve around it.






4. The Earth's crust underlying the ocean basins which is formed at mid-oceanic ridges. It is typically 5 to 10 kilometers thick composed of basalt.






5. A waterway from open ocean into a lagoon.






6. Either the northern or southern half of the Earth as divided by the equator & or the eastern or western half as divided by a meridian.






7. An informal term to include all geologic time from the beginning of the Earth to the beginning of the Cambrian period 570 million years ago.






8. 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.






9. The height of a place above sea level.






10. The solid innermost part of the core with a diameter of a little over 1 &200 km.






11. A term applied to large areas of basaltic lava presumably extruded from fissures.






12. A sedimentary rock made up of chemical sediments. Example: rock salt.






13. Any place where bedrock is visible on the surface of the Earth.






14. The zone below the zone of aeration in which all pore spaces are filled with water.






15. Heat transport by direct transfer of energy from one particle to another & without moving the particle to a new location.






16. A seismic body wave that involves particle motion & alternating compression and expansion & in the direction of wave propagation. It is the fastest seismic wave. compare S-wave .






17. A narrow strip of land along the margin of the ocean extending inland for a variable distance from low water mark.






18. A slide involving a downward and usually sudden movement of newly detached segments of bedrock sliding or slipping over an inclined surface of weakness such as a bedding plane & fault plane & or joint surface.






19. A vent in the surface of the Earth & from which lava & ash & and gases erupt.






20. The oldest eon in Earth history & extending from the origin of the Earth to about 3.9 billion years ago.






21. Where two plates collide to form mountains.






22. A portable time keeper with a mechanism for ensuring accuracy and adjusting itself & used for determining longitude at sea.






23. To preserve & or to avoid wasteful use.






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






25. 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.






26. 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.






27. Any of various minerals prized for beauty & durability & and rarity. A few noncrystalline materials of organic origin (e.g. & pearl & red coral & and amber) also are classified as gemstones.






28. 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.






29. Where one plate slides beneath another plate as the two are pushed together & a subduction zone.






30. A depression in the ground formed by the melting of a block of glacier ice buried or partially buried by drift.






31. The very slow & generally continuous downslope movement of soil and debris under the influence of gravity.






32. 1. A mass of sand & gravel & or alluvium deposited on the bed of a stream & sea & or lake & or at the mouth of a stream 2. A unit of pressure & approximately equal to atmospheric pressure at sea level.






33. A type of disintegration in which jointed rock is forced apart by the expansion of water as it freezes in fractures.






34. A device built to study distant objects by making them appear closer.






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






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






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






38. Rock formed from the accumulation of sediment & Which may consist of fragments and mineral grains of varying sizes from pre-existing rocks & remains or products of animals and plants & the products of chemical action & or mixtures of these.






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






40. In the geologic time scale a unit of time less than an era and greater than an epoch. Example: The Tertiary period was the earliest period in the Cenozoic era and included & among others & the Eocene epoch.






41. A region of high heat flow on the Earth's surface & thought to lie above a mantle plume .






42. Heat transport by moving particles & and the thermal energy that they carry & to a new location.






43. The zones of seismic activity long which plates are in contact.






44. 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.






45. Lacking in rainfall & very dry.






46. The principle that states the processes operating to change the Earth in the present also operated in the past.






47. The rigid outer shell of the Earth. It includes the crust and uppermost mantle and is on the order of 100 km in thickness.






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






49. The line separating land and water.






50. Plutonic. Antonym of extrusive. Pertaining to igneous rocks or features formed by the emplacement of magma in pre-existing rocks.