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






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






3. The top of a wave.






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






5. A roughly circular reef with an occasional small & low & coral sand island surrounding a shallow lagoon.






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






7. The initial point within the Earth that ruptures in an earthquake & directly below the epicenter. The point within the Earth which is the center of an earthquake & at which strain energy is first released and converted to elastic wave energy.






8. A rock changed from its original form and/or composition by heat & pressure &shearing stress & or chemically active fluids & or some combination of them.






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






10. The line that separates one drainage basin from another.






11. The study of earthquakes & and of the structure of the Earth by both natural and artificially generated seismic waves.






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






13. The distance between two successive wave crests or troughs.






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






15. The closest star to Earth besides the sun. It is approximately 4 light years away.






16. Destruction of the ozone layer caused by the release of CFC's (chlorofluorocarbons) into the atmosphere which react chemically with ozone and break it down into different gases.






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






18. 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






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






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






21. 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.






22. A stone or boulder & glacially transported from place of origin and left in an area of different bedrock composition.






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






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






25. A large area with common features that set it apart from other areas.






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






27. A naturally occurring inorganic solid that has a well-defined chemical composition and in which atoms are arranged in an ordered fashion.






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






29. The two days of the year on which neither hemisphere is tilted toward or away from the sun.






30. A device containing a free-swinging magnetic needle that is attracted to Earth's magnetic North Pole. Used to determine direction of travel.






31. An eruption of lava that takes place from a fracture & usually without producing a cone.






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






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






34. Shapes & like mountains or hills that make up the Earth's surface.






35. A statement of relative age in layered rocks: In a series of sedimentary rocks that has not been overturned & the topmost layer is always the youngest and the bottommost layer is always the oldest.






36. 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.






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






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






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






40. The theory of Plate Tectonics states that the Earth's crust is fragmented into a dozen or more large and small pieces floating on a semi-molten mantle.






41. A chuck of rock or dust in space.






42. Objects revolving around the sun that are too small and too numerous to be considered planets.






43. Containing moisture.






44. 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.






45. Elongated rises on the ocean floor where basalt periodically erupts & forming new oceanic crust.






46. A disease-causing organism or entity & such as a bacterium or virus.






47. Molten rock & containing dissolved gases and suspended solid particles. At the Earth's surface & magma is known as lava.






48. Distance over which wave-forming winds blow.






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






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