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. Bent rock strata.






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






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






4. The naturally occurring material from which a mineral or minerals of economic value can be extracted at a profit.






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






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






7. Banks of sand and silt along stream bank built by deposition in small increments during successive floods.






8. A commonly used measure of earthquake magnitude & based on a logarithmic scale. Each integral step on the scale represents a tenfold increase in the extent of ground shaking & as recorded on a seismograph.






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






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






11. Temporary accumulations of sediments that collect between low and high water marks.






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






13. A building that contains one or more telescopes.






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






15. Pluto is named after the Roman god of the Underworld. No longer considered a planet.






16. A sea level change due to change in load on Earth's crust.






17. Highly mafic igneous volcanic rock & typically fine-grained and dark in color; rough volcanic equivalent of gabbro. Basalt is the most abundant volcanic rock in the Earth's crust.






18. A large ridge or mound-like structure within a body of water that is built by calcareous organisms such as corals & red algae & and bivalves.






19. A volcano in the shape of a flattened cone & broad and low & built by very fluid flows of basaltic lava.






20. A spring whose temperature is 6.5o C or more above mean annual air temperature.






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






22. A rigid segment of the Earth's lithosphere that moves horizontally and adjoins other plates along zones of seismic activity. Plates may include portions of both continents and ocean basins.






23. An accumulation of wind driven sand into a distinctive shape.






24. 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'.






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. 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.






27. A worldwide change in sea level & such as caused by melting glaciers.






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






29. 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.






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






31. A flood that rises and falls very rapidly.






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






33. Similar to a groin but built to keep sand out of a harbor entrance.






34. The amount of dissolved salt in water.






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






36. Imaginary lines on a map or globe that measure distance in degrees north or south of the equator. Latitude lines extend horizontally & from east to west on a globe.






37. A sharp bend & loop or turn in a stream's course. When abandoned & it is called a meander scar or an oxbow.






38. A chuck of rock or dust in space.






39. 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.






40. The environment where a particular plant or animal is normally found.






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






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






43. The process by which building stone & usually in blocks or sheets & is extracted from the Earth. radiation -- (Electromagnetic radiation) -- energy that travels through space in the form of waves without the intervention of matter & as in the transp






44. Weathering processes that are the result of chemical reactions. Example: the transformation of orthoclase to kaolinite.






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






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






47. The presence of layers in some rocks caused by parallel alignment of minerals.






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






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






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