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. The formation & advance and retreat of glaciers and the results of these activities.






2. A broad & mound-like mass of glacier ice that usually spreads radially outward from a central zone.






3. A reverse fault on which the dip angle of the fault plane is 15 degrees or less.






4. He area from which a stream and its tributaries receives its water.






5. The process by which an unconsolidated deposit of sediments is converted in to solid rock.






6. 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.






7. A giant structure that contains hundreds of billions of stars.






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






9. Any porous and permeable rock that yields oil or natural gas.






10. Soil conditions prevailing in area whose mean annual temperature is 0o C.






11. A small ice sheet.






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






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






14. Surficial mining & in which the valuable rock is exposed by removal of overlying rock or soil.






15. That part of the continental margin that lies between the continental shelf and the continental rise. Slope relatively steep & 3o - 6o. The continental slope is underlain by crustal rocks of the continent.






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






17. Living on land.






18. The first scientist to make systematic use of the telescope in looking at the heavens.






19. Geologic time expressed in years before the present.






20. A process of land degradation initiated by human activity & particularly in the zones along the margins of deserts.






21. An earthquake that follows and has its epicenter near a larger earthquake.






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






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






24. An instrument used to measure the speed of wind.






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






26. The straightening and/or deepening of a river channel.






27. An earthquake that follows and has its epicenter near a larger earthquake.






28. 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.






29. Sediment formed by chemical precipitation from water. Example: halite precipitated as the result of the evaporation of sea water.






30. In a stream & the volume of water passing through a channel in a given time.






31. Glacial drift composed of rock fragments that range from clay to boulder size and randomly arranged without bedding.






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






33. Scratches & or small channels & gouged by glacier action. Occur on boulders & pebbles & and bedrock. Striations along bedrock indicate direction of ice movement.






34. A natural depression in the surface of the land caused by the collapse of the roof of a cavern or subterranean passage & generally occurring in limestone regions.






35. A thick layer of soil.






36. 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.






37. 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






38. A measure of the strength of an earthquake based on the amount of movement recorded by a seismograph . compare Richter scale.






39. No identifiable layers of minerals in a rock sample






40. A soft compact calcite & CaCO3 & with varying amounts of silica & quartz & feldspar & or other mineral impurities & generally gray-white or yellow-white and derived chiefly from fossil seashells.






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






42. An individual grain or constituent of a rock.






43. The point on the Earth's surface where a magnetic needle points vertically downward (north magnetic pole) or vertically upward (south magnetic pole).






44. 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.






45. The color of a mineral in its powdered form obtained from scraping a sample on a ceramic plate






46. A mound or ridge of sediment deposited by a glacier.






47. Water that flows across watersheds during and immediately after severe rainstorms. In populated areas & stormwater runoff is often water that cannot be handled by existing sewer systems. Stormwater runoff is the leading source of water pollution in t






48. A river that is able to maintain its flow through a desert because of water received from outside the desert.






49. An eon of geologic time extending from about 3.9 billion years to 2.5 billion years ago.






50. Mountains & characterized by extensive folding and thrust faulting & that form at convergent plate boundaries on continents.