Grade 9 / Science / Abeka / Chapter 8

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1. Volcanoes which pour out large quantities of highly fluid lava in rather mild eruptions produce a broad, gently sloping volcano
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Grade 9 / Science / Abeka / Chapter 8 - Quiz

Science of the physical creation grade 9 chapter 8 practice test

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2. The study of the earth
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3. Earth's outer layer of rock; portion we are most familiar with
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4. The middle layer of the earth
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5. Central part of the earth
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6. The point on the earth's surface directly above the focus of an earthquake
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7. Any trembling or shaking of the earth's crust; sudden movement of rock masses along a fault 
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8. The study of earthquakes
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9. The point at which an earthquake begins
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10. A volcano which has erupted many years ago, but is now inactive 
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11. The most famous scale used to measure earthquake strength
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12. An arch like structure 
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13. If a volcano has erupted within the past 50 years
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14. Horizontal sheetlike mass of igneous rock
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15. Slow convection currents in the plastic rock of the upper mantle
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16. Trough like structure
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17. Occurs when rocks along one side of a fault sink vertically
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18. Molten rock that may lie 3-4 miles beneath the surface
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19. The molten rock that flows from volcanoes 
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20. Primary waves; consist of a rhythmic push-pull motion in the direction of wave travel such as when spiring is alternately  pushed pulled along its length 
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21. The study of volcano-related phenomena
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22. The most abundant element in the earth's crust; makes up 50% of the earth's crust by weight
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23. "float" like rafts on the plastic rock of the upper mantle 
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24. Elastic strip along a strike-slip fault in western California
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25. The central feature of a volcano through which gases, has, and rock are ejected
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26. Marks the lower boundary of the crust 
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27. When P and S waves reach the earth's surface, they generate a third type of seismic wave called a __________
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28. Seismologists record and study the vibrations caused by earthquakes using an instrument called a ____________
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29. A volcano which will probably not erupt again
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30. The most important belt; a narrow zone of active volcanoes that nearly encircles the Pacific Ocean Basin
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31. Any substance which is emitted by an active volcano
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32. Lava that hardens to form a smooth or ropy surface
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33. Weak earthquakes 
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34. Formed when molten rock erupts from a hole in the earth's crust
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35. Appear to be formed when molten rock is forced beneath an overflying rock layer, forcing the layer upward into a blister like dome
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36. Occurs when rocks along one side of a fault move horizontally along the fault
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37. Smaller earthquakes or tremors following an earthquake at frequent intervals for days or even months, gradually decreasing in intensity
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38. There are twelve degrees of intensity as shown in the accompanying table
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39. Volcanoes made of erupted volcanic ash and rock fragments
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40. When a layer of rock breaks under the strain of the forces upon it and moves
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41. Consists of pyroclastic particles less than 4 mm
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42. Ejecta that are larger than volcanic dust particles but less than 32 mm in diameter
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43. Formed by the bending or buckling of rocks under great force
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44. "growing cloud" consists of a superheated incandescent cloud of gas and volcanic ash that travels swiftly down the volcanic slope as an avalanche
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45. The portion of the crust underlying the continents; a rock chiefly composed of silica and alumina
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46. The surest under the oceans; a denser rock that contains silica and significant amounts of magnesium
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47. Marks the lower boundary of the mantle and lies roughly 2900 km beneath the surface
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48. Pyroclastic ejecta which are formed when lava is thrown high into the air in a liquid or semiliquid state and hardens into rock before it hits the ground
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49. A vertical sheetlike mass of igneous rock
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50. Deposits of sand and mineral fragments 
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51. Produce symmetrical, wide based mountains that consist of alternating layers of lava and cinders
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52. Results when rocks on one side of a fault are thrust on top of the rocks on the other side
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53. Masses of  igneous rock beneath the surface 
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54. A domelike intrusion
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55. Lava that hardens into rough, a jagged, rocks with crumbly texture
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56. Solid, irregularly shaped lumps of hardened lava, often large and boulder like in their appearance
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57. Some of the most dramatic surface features produced by volcanoes; huge bowl-shaped craters in the ground at least two miles across
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58. Form when the surface of a large lava flow hardens but the lava beneath remains molten and continues to flow
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59. May involve either vertical or horizontal movement 
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60. One huge land mass
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61. Large igneous intrusions 
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62. Thought to have been formed when the edges of two adjacent rock layers were pushed violently together, causing the layers to buckle like a wrinkled rug 
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63. One of the most active zones; borders the Pacific Ocean and includes the great mountain chains of western North, Central, and South America, the islands of Japan, the philipines, New Zealand, and the islands in the South pacific 
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64. Particles or blocks of solid volcanic ejecta
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65. Some of the most spectacular mountains in the world 
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66. Rocks on either side of a fault spring back to a position of little or no stain an the moment an earthquake, triggering vibrations in the earth's crust
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Volcanoes which pour out large quantities of highly fluid lava in...
The study of the earth
Earth's outer layer of rock; portion we are most familiar with
The middle layer of the earth
Central part of the earth
The point on the earth's surface directly above the focus of an...
Any trembling or shaking of the earth's crust; sudden movement of...
The study of earthquakes
The point at which an earthquake begins
A volcano which has erupted many years ago, but is now inactive 
The most famous scale used to measure earthquake strength
An arch like structure 
If a volcano has erupted within the past 50 years
Horizontal sheetlike mass of igneous rock
Slow convection currents in the plastic rock of the upper mantle
Trough like structure
Occurs when rocks along one side of a fault sink vertically
Molten rock that may lie 3-4 miles beneath the surface
The molten rock that flows from volcanoes 
Primary waves; consist of a rhythmic push-pull motion in the direction...
The study of volcano-related phenomena
The most abundant element in the earth's crust; makes up 50% of...
"float" like rafts on the plastic rock of the upper...
Elastic strip along a strike-slip fault in western California
The central feature of a volcano through which gases, has, and rock...
Marks the lower boundary of the crust 
When P and S waves reach the earth's surface, they generate a...
Seismologists record and study the vibrations caused by earthquakes...
A volcano which will probably not erupt again
The most important belt; a narrow zone of active volcanoes that nearly...
Any substance which is emitted by an active volcano
Lava that hardens to form a smooth or ropy surface
Weak earthquakes 
Formed when molten rock erupts from a hole in the earth's crust
Appear to be formed when molten rock is forced beneath an overflying...
Occurs when rocks along one side of a fault move horizontally along...
Smaller earthquakes or tremors following an earthquake at frequent...
There are twelve degrees of intensity as shown in the accompanying...
Volcanoes made of erupted volcanic ash and rock fragments
When a layer of rock breaks under the strain of the forces upon it and...
Consists of pyroclastic particles less than 4 mm
Ejecta that are larger than volcanic dust particles but less than 32...
Formed by the bending or buckling of rocks under great force
"growing cloud" consists of a superheated incandescent cloud...
The portion of the crust underlying the continents; a rock chiefly...
The surest under the oceans; a denser rock that contains silica and...
Marks the lower boundary of the mantle and lies roughly 2900 km...
Pyroclastic ejecta which are formed when lava is thrown high into the...
A vertical sheetlike mass of igneous rock
Deposits of sand and mineral fragments 
Produce symmetrical, wide based mountains that consist of alternating...
Results when rocks on one side of a fault are thrust on top of the...
Masses of  igneous rock beneath the surface 
A domelike intrusion
Lava that hardens into rough, a jagged, rocks with crumbly texture
Solid, irregularly shaped lumps of hardened lava, often large and...
Some of the most dramatic surface features produced by volcanoes; huge...
Form when the surface of a large lava flow hardens but the lava...
May involve either vertical or horizontal movement 
One huge land mass
Large igneous intrusions 
Thought to have been formed when the edges of two adjacent rock layers...
One of the most active zones; borders the Pacific Ocean and includes...
Particles or blocks of solid volcanic ejecta
Some of the most spectacular mountains in the world 
Rocks on either side of a fault spring back to a position of little or...
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