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 chuck of rock or dust in space.






2. Synonym of intrusive. Antonym of volcanic. Applies to igneous rocks formed beneath the surface of the Earth; typically with large crystals due to the slowness of cooling.






3. The sum of the processes that result in the wearing away or the progressive lowering of the Earth's surface by weathering & erosion & mass wasting & and transportation.






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






5. 1. A low & bowl-shaped area of land surrounded by higher lands. 2. any large depression in which sediments are deposited.






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






7. 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.






8. A delta formed at both sides of a tidal inlet.






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






10. An informal term to include all geologic time from the beginning of the Earth to the beginning of the Cambrian period 570 million years ago.






11. The line separating land and water.






12. The oldest eon in Earth history & extending from the origin of the Earth to about 3.9 billion years ago.






13. The relationship between distances in the area being mapped and distances in the map itself.






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






15. Where two plates collide to form mountains.






16. To wash or scrub away.






17. A commonly used scale of earthquake intensity.






18. A river that is able to maintain its flow through a desert because of water received from outside the desert.






19. 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






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






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






22. The geologic eon lying between the Archean and Phanerozoic eons & beginning about 2.5 billion years ago and ending about 0.57 billion years ago.






23. The process of one plate descending beneath another.






24. A low & nearly flat accumulation of sediment deposited at the mouth of a river or stream & commonly triangular or fan-shaped.






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






26. The reserves of a valuable mineral commodity plus all other mineral deposits that may eventually become available & even those that are presumed to exist but have not yet been discovered and those that are not economically or technologically exploita






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






28. The theory that states that the present-day continents are the fragmented pieces of preexisting larger landmasses called supercontinents.






29. A ridge of high water associated with a hurricane and which floods over the shore .






30. Fossils formed when water containing minerals leaks into a mold. The minerals harden to form a copy of the original structure or organism.






31. Living on land.






32. No identifiable layers of minerals in a rock sample






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






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






35. The region of a shore that is covered at high tide and exposed at low tide.






36. The amount of material a stream carries in suspension.






37. Iron & aluminum & magnesium & manganese & and titanium. Ores of the abundant metals only need to be 3 - 5 times as metal-rich as average rock.






38. (Greek-Aphrodite)named after the Roman goddess of love. It is the planet closest in size to Earth and the second planted from the Sun.






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






40. A natural open space underground & large enough for a person to enter. Most commonly occur by the dissolution of soluble rocks & generally limestone.






41. A person who makes maps.






42. Sediments produced directly by the life processes of plants or animals.






43. Saturn is named after the Roman god of the harvest. It is the sixth planet from the Sun.






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






45. An era of time during the Phanerozoic eon lasting from 245 million years ago to 66.4 million ago.






46. All of space and everything in it.






47. 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.






48. Lava extruded beneath water characterized by pillow shapes.






49. A division of geologic time next shorter than a period. Example: the Pleistocene epoch is in the Quaternary period.






50. Saturn is named after the Roman god of the harvest. It is the sixth planet from the Sun.