1. Welcome To
Big Board Facts

2. Today's
Topics
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3. Topic
One- Weathering
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4. Topic
Two- Soil
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5. Topic
Three- Soil Horizons
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6. Four- Soil Conservation
Topic
Four- Soil Conservation
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7. Topic
Five- Dust Bowl
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8. Big Board Facts
Topic One 5 10 15 20 25
Topic Two 5 10 15 20 25
Topic Three 5 10 15 20 25
Topic Four 5 10 15 20 25
Topic Five 5 10 15 20 25
Team Scores
Team One
Team Three
Team Five
Big Points
Question
Team Two
Team Four
Team Six

9. Topic 1 Question for 5 Points
The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles
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10. Topic 1 Answer for 5 Points Abrasion
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11. The most important factors in determining the rate of weathering are
Topic 1
Question for 10 Points
The most important factors in determining the rate of weathering are
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12. Topic 1 Answer for 10 Points Rock type and climate
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13. Topic 1 Question for 15 Points
What kind of weathering causes the mineral composition of rocks to change?
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14. Topic 1 Answer for 15 Points Chemical weathering
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15. Topic 1 Question for 20 Points
A rock containing iron becomes soft and crumby and reddish brown in color. It has been chemically weathered by
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16. Topic 1 Answer for 20 Points Oxygen
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17. A hot and wet climate causes weathering to take place
Topic 1
Question for 25 Points
A hot and wet climate causes weathering to take place
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18. Topic 1 Answer for 25 Points rapidly
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19. Soil formation begins with the weathering of what?
Topic 2
Question for 5 Points
Soil formation begins with the weathering of what?
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20. Topic 2 Answer for 5 Points bedrock
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21. Soil that is rick in humus has high
Topic 2
Question for 10 Points
Soil that is rick in humus has high
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22. Topic 2 Answer for 10 Points fertility
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23. Soil formation wld take place most rapidly with the weathering of
Topic 2
Question for 15 Points
Soil formation wld take place most rapidly with the weathering of
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24. Limestone in a warm, wet climate
Topic 2
Answer for 15 Points
Limestone in a warm, wet climate
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25. Topic 2 Question for 20 Points
When earthworms add waste to soil, then die and decay in soil, they are contributing to the formation of
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26. Topic 2 Answer for 20 Points humus
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27. Living organisms in soil help to
Topic 2
Question for 25 Points
Living organisms in soil help to
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28. Mix the soil and make humus
Topic 2
Answer for 25 Points
Mix the soil and make humus
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29. Decomposers are the soil organisms that
Topic 3
Question for 5 Points
Decomposers are the soil organisms that
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30. Break down and digest the remains of dead organisms.
Topic 3
Answer for 5 Points
Break down and digest the remains of dead organisms.
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31. Soil is a valuable resource b/c it
Topic 3
Question for 10 Points
Soil is a valuable resource b/c it
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32. Is important to all living things on land
Topic 3
Answer for 10 Points
Is important to all living things on land
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33. What can cause the loss of soil that is not protected by plant cover
Topic 3
Question for 15 Points
What can cause the loss of soil that is not protected by plant cover
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34. Erosion by wind or water
Topic 3
Answer for 15 Points
Erosion by wind or water
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35. Topic 3 Question for 20 Points
Plowing removed the grass from the Great Plains and exposed the soil. What effect did this have when a drought cam during the 1930s?
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36. It helped to cause the Dust Bowl
Topic 3
Answer for 20 Points
It helped to cause the Dust Bowl
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37. What term describes the management of soil to prevent its destruction?
Topic 3
Question for 25 Points
What term describes the management of soil to prevent its destruction?
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38. Topic 3 Answer for 25 Points Soil Conservation
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39. Plowing fields along curves of a slope is called
Topic 4
Question for 5 Points
Plowing fields along curves of a slope is called
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40. Topic 4 Answer for 5 Points Contour plowing
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41. Topic 4 Question for 10 Points
Growth of plant roots and animal activity result in what kind of weathering?
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42. Topic 4 Answer for 10 Points mechanical
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43. Topic 4 Question for 15 Points
Granite lasts a long time when its used for bldg materials in areas with what climate?
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44. Topic 4 Answer for 15 Points Cool
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45. A permeable rock weathers easily b/c
Topic 4
Question for 20 Points
A permeable rock weathers easily b/c
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46. It contains many small, connected airspaces
Topic 4
Answer for 20 Points
It contains many small, connected airspaces
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47. Topic 4 Question for 25 Points
Geologists infer from the rounded, eroded shapes of the Appalachian Mtns that
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48. The mtns have been eroding for millions of years.
Topic 4
Answer for 25 Points
The mtns have been eroding for millions of years.
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49. In which soil layer wld you find loam that is rick in humus
Topic 5
Question for 5 Points
In which soil layer wld you find loam that is rick in humus
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50. Topic 5 Answer for 5 Points A Horizon
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51. The texture, or particle size, of soil determines what?
Topic 5
Question for 10 Points
The texture, or particle size, of soil determines what?
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52. How much air and water the soil can hold
Topic 5
Answer for 10 Points
How much air and water the soil can hold
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53. The type of soil called loam is made of
Topic 5
Question for 15 Points
The type of soil called loam is made of
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54. Equal amounts of sand, silt, and clay
Topic 5
Answer for 15 Points
Equal amounts of sand, silt, and clay
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55. Topic 5 Question for 20 Points
In conservation plowing, why are dead weeds and stalks of previous year’s crop left in the ground?
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56. To retain moisture and hold the soil in place
Topic 5
Answer for 20 Points
To retain moisture and hold the soil in place
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57. In a cross section of soil, the B horizon consists of
Topic 5
Question for 25 Points
In a cross section of soil, the B horizon consists of
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58. Clay, minerals, and little humus
Topic 5
Answer for 25 Points
Clay, minerals, and little humus
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59. The "Big Points"
Question
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60. 25 10 9 11 12 14 13 8 7 3 2 4 5 15 6 1 16 27 26 28 29 30 24 23 18 17 20 19 21 22
“Big Points”
Question
A marble statue is left exposed to the wether. W/in few yrs, the details on the statue have begun to weather. This weathering is caused by
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61. Carbonic acid in rainwater
Big Points
Answer for Big Points
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