1. Exam review
Power point 6

2. he breakdown of ozone into oxygen results from the electromagnetic absorption spectrum of ozone. This production of oxygen in the ozone layer is caused by exposing ozone to a strong source of which type of electromagnetic radiation?
A radio waves
B microwaves
C infrared light
D ultraviolet light

4. Hawaii is composed mainly of volcanoes with gentle slopes and large surface areas. Which characteristics best describe the lava these volcanoes have released?
A relatively fluid and low viscosity
B highly viscous and relatively cool
C mix of hot gas and rock shards

6. Which statement describes a result of tectonic plate subduction that functions to help produce new volcanoes?
A The heat deep in the crust melts the oceanic crust and reduces its density.
B Pressure from the continental plate transforms sediments into liquid rock.
C The continental plate scrapes a layer of rock and sediment from the oceanic plate.

7. The heat deep in the crust melts
the oceanic crust and reduces its density.

8. Which process is most likely to produce a volcano with gentle slopes?
A Magma with a low silica content migrates to the surface of oceanic crust.
B Oceanic crust collides with and subducts beneath the continental crust.
C Magma is enriched with silica as it moves upward through the crust.

9. Magma with a low silica content migrates to the surface of oceanic crust.

10. Which condition is most likely to cause the formation of a temperature inversion?
A rapid cooling of the ground at night
B high wind on a sunny morning
C saturation of soil with warm rain
D rapid collision of warm and cold fronts

12. Which statement describes an aspect of tectonic plate motion directly caused by density differences among tectonic plates?
A Ocean plates move outward from the mid-ocean ridge.
B When ocean and continental plates collide, the ocean plate is subducted.
W C Continental plates are thicker and contain older material than ocean plates.

13. When ocean and continental plates
collide, the ocean plate is subducted.

14. A volcano found in the center of a tectonic plate tends to be a result of which phenomenon?
A strong earthquake
B activity at a hot spot
C pressure in thick sediments that produces heat
D unusually excessive erosion that wears away bedrock

16. Which of these is a tectonic event that is most likely to contribute to the formation of a sedimentary basin?
A erosion of material from around the hardened neck of an ancient volcano
B exposure of clastic rocks to intense levels of heat and pressure
C divergence of two crustal plates forming a long rift

18. Which characteristic of the asthenosphere helps explain the evidence of crustal-plate motion?
A the magnetic properties
B the semiliquid physical state
C the ability to deflect solar winds
D the ability to absorb heat energy

20. The Himalayan Mountain chain is the youngest and tallest mountain chain on Earth. Which phenomenon contributed most to this area of continental buildup?
A erosion of surrounding continental materials
B eruptions of continental shield volcanoes
C convergence of continental plates

22. Which layer of Earth is the source of lava that erupts from volcanoes?
A asthenosphere
B inner core
C outer core
D lithosphere

24. Which of the following stream characteristics most directly affects stream depositions?
A gradient
B elevation
C base level
D water quality

26. Which of these best explains how tectonic-plate movement causes the formation of mountain ranges?
A Convection currents in the mantle force two plates to collide.
B Sediment builds upward due to crushing forces of subducting plates.
C The plates separate, allowing the asthenosphere to push through and later cool.

28. Which crustal feature forms when two continental plates collide?
A trenches
B rift zones
C tidal zones
D mountain ranges

30. Which of these is the most serious impact to an ecosystem after a tornado?
A an increase in biodiversity
B soil erosion along with water pollution
C the growth of plants in newly cleared areas
D animals relocating to different habitats

33. Which feature results when plates of different densities converge and one plate slips under the other?
A a fault
B a ridge
C a trench
D a rift zone

35. Which scale is used to report the intensity of an earthquake?
A Saffir-Simpson Scale
B Modified Mercalli Scale
C Richter Magnitude Scale
D Moment Magnitude Scale

37. Tectonic motion caused tension between plates in Earth’s crust
Tectonic motion caused tension between plates in Earth’s crust. A sudden release of this energy occurred. Based on this information, which event happened?
A subsidence
B earthquake
C volcanic eruption
D meteoroid impact

39. Which ongoing process causes the buildup of energy that is released at a later time when an earthquake occurs?
A Nuclear reactions in Earth’s lower crust release electromagnetic waves.
B Jagged edges along a fault generate friction between two moving tectonic plates.
C Tectonic plates near a fault continue to move even though the fault remains motionless.

40. Tectonic plates near a fault continue to move even though the fault remains motionless.

41. Scientists measure the increasing height of the Himalaya Mountains
Scientists measure the increasing height of the Himalaya Mountains. Which of the following provides the best reason for the height increases of these mountains?
A a convergent boundary between the Eurasian Plate and Indo-Australian Plate
B a divergent boundary between the African Plate and South American Plate
C a subduction boundary between the Nazca Plate and South American Plate

42. a convergent boundary between the Eurasian Plate and Indo-Australian Plate

43. Which features form when magma emerges between two diverging oceanic plates?
A ocean trenches
B fault boundaries
C mid-ocean ridges
D composite volcanoes

45. Which feature does not form as a result of tectonic plates diverging?
A trench
B rift valley
C ocean basin
D mid-ocean ridge

47. Which of these explains how a trench can form?
A two oceanic plates converging
B two continental plates converging
C two continental plates diverging
D two oceanic plates diverging

49. Which of these serve as protective barriers along coastlines and are often destroyed when hit by a strong hurricane?
A the erosion of land along the coastline
B the buildup of dunes along the coast over time
C the new construction of buildings along the coastline

51. Which of these natural disasters are the most unpredictable?
A earthquakes
B hurricanes
C tornados
D blizzards