Exam on Wednesday

Exam will be on Wednesday, Sept 16th.
If you are absent for any reason you need to scedule a time with me to make it up when you return.
The following are answers to the chapter 15 review which was assigned Friday and was due today, Tuesday.
The exam will cover this material and will not be open note or open book.

Review for chapter 15 exam (including metric and nutrition questions)

Metric system:
What are the metric units for
1. Weight (mass) grams, g
2. Distance meter, m
3. Volume liter, L
4. How many millimeters are in a meter? 1,000
5. How many meters are in a millimeter? 1/1,000
6. How many meters are in a kilometer? 1,000
7. How many milligrams are in a gram? 1,000

Nutrition:
The six basic nutrients are water, carbohydrates, protein, fats/lipids, minerals, and vitamins.
1. Which of these are sources of calories (energy)? Carbohydrates, fats, protein
2. Which of these are organic? Carbs, fat, protein, and vitamins
3. What is the preferred source of energy for our body? carbohydrates
4. Which has the most calories per gram? fats
5. What does malnutrition mean? You do not get enough of one of the nutrients, bad nutrition


Agriculture:
Vocabulary words
1. Persistant pesticide chemical that kills pests that stays in the environment for a long time
2. Pheromone chemical produced by one organism that affects the behavior of another
3. Yield amount of food produced in a certain area of land
4. Erosion when the soil is carried away by wind and water

1. How is subsistence farming similar to organic farming methods? Small scale, uses fewer chemicals, as well as compost and manure to fertalize crops
2. What are the three biggest staple crops of the world? (see figure 1 on page 380) corn, rice, and wheat
3. In terms of nutrition, why do people eat meat? Complete protein (and fat) high nutrients per gram
4. How does the north American diet differ from that of the developing world? (see figure 2 on page 380) we eat more meat (protein and fat) than most others
5. Name three things that can cause famine. Drought, soil loss (erosion), and problems with food distribution (may be related to war)
6. Name three things that can cause malnutrition. Poverty, transportation, war and political strife
7. The production of food from ___plants________ requires less energy, water and land that food from __animals__________.
8. What are three negative effects of the green revolution? Soil degradation and use more water, fossil fuels, and chemicals (pesticides and fertalizers)
9. What were positive effects of the green revolution? Crops with increased yield gives more food for people
10. Which layer of the soil is best for growing crops? topsoil
11. What are the soil layers from the top down? Surface litter, topsoil, leaching zone, subsoil, bedrock
12. What causes desertification? Land degradation, drought, erosion, pollution, salinization
13. What causes salinization? Too much irrigation with ground water or not enough rainfall
14. What are three methods of soil conservation? No till farming, contour plowing, terracing
15. What would a terraced hill look like? Steps cut into the hill
16. Soil conservation is meant to preserve __topsoil_______ by limiting ___errosion___.
17. How can you enrich the soil? Fertilizer, compost, manure
18. What are three major crop pests? Insects (six legs like grasshopper), funguses, rodents, weeds
19. What are three tools of biological pest control? Pathogens, chemicals from plants, plant defenses, pherimones, beneficial insects
20. Name three beneficial insects and say how they are beneficial. Lady bugs, praying mantis and wasps all eat other insect pests. Bees, butterflies, and ants pollinate flowers.
21. Integrated pest management includes _chemical pest control_, _biological pest control_, and __a variety of farming methods_.