Exploring Earth's Geological Features

1. Post Mid-Term ReviewUnits 1-3 S6E5. Students will investigate the scientific view of how the earth’s surface is formed. Compare and contrast the Earth’s crust, mantle, and core including temperature, density, and composition. Investigate the contribution of minerals to rock composition. Classify rocks by their process of formation. Describe processes that change rocks and the surface of the earth. Explain the effects of physical processes (plate tectonics, erosion, deposition, volcanic eruption, gravity) on geological features including oceans (composition, currents, and tides). Describe soil as consisting of weathered rocks and decomposed organic material. Explain the effects of human activity on the erosion of the earth’s surface. Describe methods for conserving natural resources such as water, soil, and air.

2. Rocks are generally classified according to ___. A. Their mineral content B. Their color C. How they form D. Where they are found

3. Which of the following is considered the “building blocks” of rock? A. Fossils B. Sand C. Minerals D. Water

4. True or False? Metamorphic rock forms when heat & pressure deep underground change an existing rock into a new rock.

5. True

6. Plants, animals, and people are living things. What is a synonym for materials that were once part of one of these living things? A. Organic B. Inorganic C. Clastic D. Chemical

7. If a sedimentary rock is put under extreme heat & pressure to the point that it melted back into magma, based on the rock cycle, what classification of rock would it become next? A. Metamorphic B. Igneous C. Sedimentary D. There is no way to tell

8. Choose the answer that provides the best definition of a Mineral. A. Man made, organic, with a physical composition, and crystals inside B. Naturally occurring, inorganic solid, with a crystal structure, and a definite chemical composition C. Naturally occurring, organic solid, with a variable composition, and a crystalline structure

9. Two continental plates that crunch or smash together slowly can produce ________. • a trench • islands • a mountain range • hot spots

10. Wegener proposed a THEORY about the continents. He said they have been moving around for millions of years.What did he call this THEORY? • Seafloor Spreading • Island Formation • Volcanic Eruptions • Continental Drift

11. Name the 3 types of heat transfer.Here are some hints…

12. Radiation • Convection • Conduction

13. The stress that pulls on the crust where two plates are moving apart is called ______. • Compression • Reverse • Shearing • Tension

14. What causes the mantle rock to flow very slowly?

15. Convection Currents

16. What is the process called when crust is recycled at a convergent boundary as a denser plate dives under a less dense plate?

17. Subduction

18. Waves of energy generated by an earthquake that travel through Earth are called ___. • Seismic waves • Land formations • Weather patterns • Sonar waves

19. Earthquakes may happen when rock breaks along cracks in Earth’s crust. These cracks in the crust are called ___. • Tunnels • Ridges • Faults • Continents

20. The point on Earth’s surface where the earthquake is the strongest and most damaging is called the ___. • Center • Trigger • Breaking point • Epicenter

21. The earthquake in Japan was reported as a 9.0 on the Richter Scale. What does this tell us about the earthquake? • How long the quake lasted • The time of day the quake began • The size/magnitude of the quake • How much it will cost for repairs

22. The Gold Gate Bridge in San Francisco, CA was built with special foundations and shock absorbers because it is located near a strike-slip fault. Earthquakes and tremors can happen at any time along THIS famous fault called ___. • The Pacific Plate • The Rio Grande • The San Andreas Fault • The California Fault

23. A string of islands that forms where two plates converge and collide is called ___. The Aleutian Islands, The Caribbean Islands, and Japan are all examples of this geologic formation. • A mountain range • A subduction zone • An island arc • A mid-ocean ridge

24. Hot springs and geysers are two examples of ___. These may be found where there is evidence of past or present volcanic activity. • Areas of muddy water • Areas of geothermal activity • Areas where the ground cools • Areas where old people live

25. In Hawaii there are several wide, gently sloping volcanic mountains. These are examples of ____ volcanoes. • Lava dome • Shield • Cinder cone • Composite

26. A tall, cone-shaped mountain in which layers of lava alternate with layers of ash in explosive eruptions is a ___ volcano. Mt. St. Helens, Mt. Vesuvius, and Mt. Fuji are all examples of this type of geologic formation. • Lava dome • Shield • Cinder cone • Composite

27. Underwater earthquakes, explosive volcanic eruptions, and/or large underwater rock movement can trigger huge ocean waves that may cause extreme flood damage to an area. These huge waves are called ___. • Tsunamis • Tidal waves • Breaker waves • Seismic waves

28. If you were in a tall office building during an earthquake, which type of seismic wave would be responsible for the violent shaking you feel? • P waves • S waves • Surface waves • Sonar waves

29. In 1980 Mt. St. Helens erupted for the first time in 120 years. Its magma was high in viscosity with high silica content. This type of eruption is an example of a(n) ___ eruption. • Quiet • Vent • Explosive • Lava fountain

30. Which of the following would be the best model of an erupting volcano? • Clay hardens when it is baked in an oven • A car faster when the accelerator is pushed • Water in a pot gets hotter when the pot is heated on a stove • Carbon dioxide dissolved in soda pop rushes out when the pop is opened

31. The agent of mechanical (physical) weathering in which rock is worn away by the grinding action of other small rock particles is called ______. This is similar to sandblasting. • Erosion • Cracking and peeling • Abrasion • Ice wedging

32. A rock containing iron (Fe) becomes soft, crumbly, and reddish-brown in color. It probably has been chemically weathered by a reaction with _____. • Abrasion • Acid rain • Oxygen • Plants

33. The growth of plant roots and animal activity may result in ______. • Mechanical weathering • Erosion • Chemical weathering • Abrasion

34. A marble statue is left exposed to the weather. Within a few years, the details on the statue have begun to weather away. This weathering is probably caused by ______. • Oxidation • Acid rain • Lichens • Abrasion

35. Ice wedging causes mechanical weathering of rock by means of ______. • Heating and cooling of air • Plant growth • Animal actions • Freezing and thawing of water

36. What type of weathering causes the mineral composition of rocks to change? • Chemical weathering • General weathering • Mechanical weathering • Permeable weathering

37. Geologists infer from the rounded, eroded shapes of the tops of the Appalachian Mountains that ______. • The mountains formed recently. • The mountains are made of soft rock. • The mountains are not being changed. • The mountains have been eroding for millions of years.

38. The most important factors in determining the rate of weathering are ______. • Carbon dioxide and acid rain • Abrasion and acid from plant roots • Animal action and oxygen • The type of rock and the climate of the area

39. Permeable rock weathers easily because it _______. • Is made up of small pieces of lots of rocks • Is made of only one mineral • Contains many small, connected air spaces • Is made of many minerals

40. A hot, wet climate causes weathering to take place _______. • Slowly • Quickly • Unevenly • At the same rate as a cool, dry climate

41. Soil formation would take place more rapidly with the weathering of _______. • Granite on a mountain top • Sandstone in a desert • Granite in a cold, dry climate • Limestone in a warm, wet climate

42. Soil that is rich in humus has high _____. • Fertility • Water content • Sand content • Clay content

43. Soil formation begins with the weathering of _____. • Litter • Bedrock • The A Horizon • Humus

44. In conservation plowing, why are dead stalks and weeds of the previous year’s crop left in the ground? • Keep the soil from becoming too fertile • Reduce the amount of seed needed for next year’s crop • To retain moisture, hold the soil in place, and add nutrients to the soil • Keep more organisms out of the soil

45. Soil is a valuable natural resource because it _____. • Is important to all living things on land • Contains sand and gravel • Has decomposers • Has all three soil horizons

46. When earthworms add their wastes to the soil, then die and decay in the soil, they are contributing to the formation of _____. • Silt • Loess • Humus • Clay

47. To conserve and protect soil from erosion, farmers might choose to plow fields along curves of a slope. This is called ____. • Drought plowing • Contour plowing • No-till plowing • Sod plowing

48. Mass movement is caused by ______. • Plucking and abrasion • Gravity • Chemical weathering • Erosion and deposition

49. The process by which natural forces move weathered rock and soil from one place to another is called _____. • Soil conservation • Deposition • Abrasion • Erosion

50. What can cause the loss of soil when it is not protected by plant cover? • Chemical weathering • Erosion by wind or water • Deposition of sediments • Too many organisms in the soil