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. A flood that rises and falls very rapidly.






2. A device built to study distant objects by making them appear closer.






3. 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.






4. A term applied to large areas of basaltic lava presumably extruded from fissures.






5. A tool for measuring the relative clarity of water.






6. Of or relating to or containing basalt & a dark & dense & extrusive rock that has a silica content of 40% to 50% and makes up most of the ocean floor.






7. Lacking in rainfall & very dry.






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. The accumulation of material in layers or beds.






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






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






12. Of or relating to or containing basalt & a dark & dense & extrusive rock that has a silica content of 40% to 50% and makes up most of the ocean floor.






13. The uprush of a wave onto the beach followed by the return flow of the water down the beach slope in the intervals between waves.






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






15. The attractive force between two objects; its magnitude depends on their masses and the distance between them.






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






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






18. A volcanic mountain on the seafloor. If flat-topped & it is a guyot.






19. A waste material that contaminates air & water & or soil.






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






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






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






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






24. A system that uses a constellation of 24 satellites & their ground stations & and individual GPS receivers to accurately locate points on Earth.






25. A conical volcano formed by the accumulation of pyroclastic debris around a vent.






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






27. Living on land.






28. Gases (primarily water and carbon dioxide & but also a variety of sulfur and nitrogen compounds and gaseous hydrocarbons) that trap the Sun's heat in the atmosphere.






29. An imaginary circle around the earth that represents the halfway mark between the North and South Poles and establishes the boundary between the Northern and Southern Hemispheres.






30. 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






31. The method of locating an epicenter by determining how far it lies from three widely separated seismographs.






32. Long narrow beaches separated in many places from the mainland by lagoons.






33. 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.






34. The rise and fall of sea level caused by the gravitational pull of the Sun and Moon on the Earth.






35. An icicle-shaped accumulation of dripstone hanging from cave roof.






36. Property possessed by certain rocks of breaking with relative ease along parallel planes or nearly parallel surfaces in their crystal structures where the bonds are weakest.






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






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






39. Lava extruded beneath water characterized by pillow shapes.






40. 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






41. The peak flow of water that tops the banks of a stream channel.






42. The direction & north (normal) or south (reversed) & that a magnetic compass needle points.






43. A coral reef separated from the mainland by a lagoon.






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






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






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






47. The transformation of a soil from a solid to a liquid state as the result of increased pore pressure.






48. Where two plates collide to form mountains.






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






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