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. Jupiter is named after the Roman king of the gods. It is the fifth planet from the Sun.






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






3. The speed at which water flows.






4. A substance that produces negatively charged hydroxide ions ( OH- ) in water and reacts with acids to form salts.






5. Any form of water & such as rain & sleet & or snow & that falls to Earth's surface.






6. Living on land.






7. The two days of the year on which the noon sun is directly overhead at either 23.5






8. A guide to reading a map that typically contains distance scales & arrows indicating direction & and/or explanations of symbols used.






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






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






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






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






13. The generally dark & more or less stable part of the organic matter in a soil & so well decomposed that the original sources cannot be identified.






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






15. The part of the crust that directly underlies the continents and continental shelves. Averages about 35 km in thickness & but may be over 70 km thick under largest mountain ranges.






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






17. 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






18. A blanket of wind-driven sand with an upper surface about a meter above ground level.






19. Pertaining to clastic material formed by volcanic explosion or aerial expulsion from a volcanic vent.






20. A commonly used scale of earthquake intensity.






21. Where two plates are moving in opposite directions as in a mid-ocean ridge.






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






23. Living in water.






24. A small & dust-bearing whirlwind.






25. The sudden fall of one or more large pieces of a rock from a cliff.






26. A major drainage divide separating the drainage to one ocean from another.






27. No identifiable layers of minerals in a rock sample






28. An isolated & steep-sided & rocky mass or island just offshore from a rocky headland & usually on a shore platform.






29. Ratio between weight of given volume of material and weight of equal volume of pure water.






30. A ball of ice and dust & whose orbit is a long & narrow ellipse.






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






32. Refers to rock or sediments made up primarily of broken fragments of pre-existing rocks or minerals.






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






34. The process of removing metal from ore.






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






36. Any object that revolves around another object in space.






37. A sedimentary rock composed of combustible matter derived from the partial decomposition of plant material.






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






39. Bent rock strata.






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






41. A comet that passed Earth in 1997 and won't return to the inner solar system until the year 4377.






42. Extending across a continent.






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






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






45. A thick layer of soil.






46. A molecule composed of three atoms of oxygen and mostly found in the stratosphere. Though beneficial in the upper atmosphere & at ground level & ozone is called photochemical smog & and is a respiratory irritant and considered a pollutant.






47. Named after the Roman god of the sea. It is the eighth planet from the Sun.






48. The resistance of a mineral to scratching & as measured by the Mohs scale.






49. Any form of water & such as rain & sleet & or snow & that falls to Earth's surface.






50. A supercontinent that existed from the the end of the Permian to the Jurassic & 300 to 200 million years ago & assembled from large continents like Euramerica & Gondwana & and Siberia & as well as smaller landmasses like the Cathaysian and Cimmerian