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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 delta formed at both sides of a tidal inlet.






2. Uranus is named after the Roman god of the sky. It is the seventh planet from the Sun.






3. An ingredient in a food or other substance that nourishes or promotes growth.






4. The process by which ocean floors spread laterally from crests of main ocean ridges. As material moves laterally from the ridge & new material replaces it along the ridge crest by welling upward from the mantle.






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






6. The mass of an object divided by its volume.






7. The weak or 'soft' zone in the upper mantle just below the lithosphere & involved in plate movement and isostatic adjustments. It lies 70 to 100 km below the surface and may extend to a depth of 400 km.






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






9. A process by which salts accumulate in soil.






10. The reflection of light on a given mineral's surface & classified by intensity and quality.






11. The partial or complete blocking from view of one object by another.






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






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






14. The acidity in rain due to gases from internal combustion engines and coal- and oil-burning power plants.






15. 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.






16. A downward distortion or dimple in the water table that forms as a well pumps water faster than it can flow through the aquifer.






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






18. The pattern of water circulation from the ocean to the atmosphere to the land and back to the ocean.






19. A hydrocarbon (coal or petroleum) that can be extracted from the Earth for use as a fuel. Fossil fuels are non-renewable energy sources.






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






21. The internal resistance to flow in a liquid.






22. Large area of extremely flat ocean floor lying near a continent and generally over 4 km in depth.






23. Evidence in rock of the presence of past life & such as a dinosaur bone & an ancient clam shell & or the footprint of a long-extinct animal as well as life history artifacts.






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






25. Uranus is named after the Roman god of the sky. It is the seventh planet from the Sun.






26. The physical & chemical & and biological processes by which rock at or near the Earth's surface is broken down into smaller pieces.






27. The process of one plate descending beneath another.






28. A vertical conduit through the Earth's crust below a volcano & through Which magma has passed.






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






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






31. A general term for a relatively hard layer of soil at or just below the ground surface & cemented by silica & iron oxide & calcium carbonate & or organic matter.






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






33. The way in which a rock or mineral breaks in random patterns rather than cleaving






34. A sea wave produced by any large-scale & short duration disturbance on the seafloor & commonly a shallow submarine earthquake but possibly also a submarine slide or volcanic eruption.






35. A small ice sheet.






36. 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.






37. A valley carved by glacier erosion and whose cross-valley profile has steep sides and a nearly flat floor & suggestive of a large letter 'you'.






38. 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.






39. The amount of dissolved salt in water.






40. An area in which a large number of windmills have been erected to generate electrical power.






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






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






43. The science that deals with the study of the planet Earth--the materials of which it is made & the processes that act to change these materials from one form to another & and the history recorded by these materials; the forces acting to deform the ou






44. The precipitation that runs directly off the surface to stream or body of standing water.






45. A Hawaiian term for a basaltic lava flow with a smooth & or ropy surface.






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






47. A sedimentary rock composed primarily of biogenic sediments.






48. Till deposited from main body of glacier during ablation.






49. The speed at which water flows.






50. Extending across a continent.






Can you answer 50 questions in 15 minutes?



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