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Welcome! The Topic For Today Is…

Welcome! The Topic For Today Is…. Soil and Population Profiles. Topic 1: 200. Question: What is soil texture? Answer The relative size of the mineral particles that make up the soil. Back. Topic 1: 400. Question:

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Welcome! The Topic For Today Is…

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  1. Welcome! The Topic For Today Is…

  2. Soil and Population Profiles

  3. Topic 1: 200 • Question: • What is soil texture? • Answer • The relative size of the mineral particles that make up the soil. Back

  4. Topic 1: 400 • Question: • What are the three different words used to describe soil mineral (inorganic) particles? • Answer • Sand (largest), silt (medium), clay (smallest) Back

  5. Topic 1: 600 • Question: • What type of soil texture has good nutrient-holding and water-holding capacity? • Answer • Clay (best), silt (good), sand (poor) Back

  6. Topic 1: 800 • Question: • How does water-holding capacity relate to aeration? • Answer • As one goes up, the other goes down (inverse relationship). Back

  7. Topic 1: 1000 • Question: • How does water-holding capacity relate to water infiltration? • Answer • Inverse relationship (sand lets water flow right through, doesn’t hold on to the water). Back

  8. Topic 2: 200 • Question: • What does a population profile show? • Answer • The number of people in each age group in a country. Back

  9. Topic 2: 400 • Question: • What does the population profile of a developing country like Kenya look like? • Answer • Pyramid Back

  10. Topic 2: 600 • Question: • What does the population profile look like if a country’s TFR has been stable at replacement level fertility? • Answer • Column Back

  11. Topic 2: 800 • Question: • What is the shape of a population profile in a country with a graying population? • Answer • Inverted pyramid (kite) Back

  12. Topic 2: 1000 • Question: • What happens to the population profile in a country severely affected by the AIDS virus? • Answer • It loses a large number of working-age adults (gets a “waist”) Back

  13. Topic 3: 200 • Question: • The ability of soil to hold on to nutrients • Answer • Nutrient-holding capacity Back

  14. Topic 3: 400 • Question: • What 2 factors influence nutrient-holding capacity in soil? • Answer • Organic matter (humus) • Particle size (small is better) Back

  15. Topic 3: 600 • Question: • The ability of soil to hold on to water • Answer • Water-holding capacity Back

  16. Topic 3: 800 • Question: • The property of soil that lets roots “breathe” • Answer • Aeration Back

  17. Topic 3: 1000 • Question: • The relative acidity of soil • Answer • pH Back

  18. Topic 4: 200 • Question: • In India, how are fertility and education related? • Answer • Inverse relationship Back

  19. Topic 4: 400 • Question: • In sub-Saharan Africa, the age structure is such that even if TFR falls to 2 instantly, the population will double in this century. This is due to…. • Answer • Population momentum. Back

  20. Topic 4: 600 • Question: • What can change the status of women in a country like India? • Answer • Access to education and job training Back

  21. Topic 4: 800 • Question: • Describe the message of one family planning poster • Answer • Answer varies Back

  22. Topic 4: 1000 • Question: • What are reasons that the poor in developing countries have large families? • Answer • Security in old age, infant mortality, helping hands, cost of education, status of women, lack of available contraception Back

  23. Topic 5: 200 • Question: • The property of soil that describes how easy it is to cultivate • Answer • Workability…think about our clay soil Back

  24. Topic 5: 400 • Question: • The process of soil being washed or blown away • Answer • Erosion Back

  25. Topic 5: 600 • Question: • The 2 things lost from soil first when soil erodes are • Answer • Organic matter and small inorganic particles Back

  26. Topic 5: 800 • Question: • Why does erosion lead to desertification? • Answer • The soil components lost first are the ones that contribute to water-holding capacity. Back

  27. Topic 5: 1000 • Question: • What makes soil too salty? • Answer • Irrigation: dissolved salt is left behind when irrigation water evaporates. Back

  28. Bonus Question: 5000 pts. • Question: • List 5 things that encourage fertility rates to decline • Answer • Security in old age, decreased infant/child mortality, universal education, opportunities for women, access to contraceptives Back

  29. Daily Double

  30. Daily Double

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