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8th Grade Chapter 2 Sec 1 Food and Energy
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8th Grade Chapter 2 Sec 1 Food and Energy

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  • 1. Ch. 2 Sec. 1 Food & Digestion
  • 2. calorie
    • amount of energy needed to raise temp. of 1 gram of water by 1 Celsius degree
    • 1 C alorie = 1,000 calories
    • more calories = more energy
    • more active you are  more calories needed
    one serving of popcorn may contain 60 Calories (60 kcal), or 60,000 calories, of energy
  • 3. nutrients
    • substances in food that provide raw materials & energy body needs to carry out all essential processes
  • 4.  
  • 5.  
  • 6. nutrients carbo- hydrates fats protein vitamins minerals water
  • 7.
    • = 4 Calories of energy
    • divided into 2 groups
  • 8. 1. simple carbohydrates
    • a.k.a. sugars
    • found naturally in fruits, milk & vegetables
    • glucose = main source of energy
  • 9. 2. complex carbohydrates
    • eg. fiber
      • can not be digested
      • found in plant foods
  • 10.  
  • 11. fats
    • provide 2X as much as energy as carbs.
    • classified in 2 groups
  • 12. fats
    • 1. unsaturated fats
      • liquid at room temp
      • ex. olive oil
  • 13. fats
    • 2. saturated fats
      • solid at room temp.
      • foods that have saturated fat
      • contain cholesterol = waxy, fatlike substance found only in animal products
        • made by liver
  • 14.  
  • 15. Activity- Do snack foods contain fat? Describe mark on bag Fat (Yes or no) Peanut butter Cheese spread cracker Pretzel Peanut butter chips Chocolate chips Popcorn Prediction Food
  • 16.  
  • 17.
    • needed for tissue growth & repair
    • made up of amino acids
    • 2 types of proteins:
    • 1. complete
    • 2. incomplete
  • 18. proteins incomplete proteins
  • 19.  
  • 20.  
  • 21. vitamins
    • 2 types:
    • fat soluble
    • water soluble
    Scurvy Song-Pink
  • 22.  
  • 23.  
  • 24. minerals
    • not made by living things
    • present in soil
    • absorbed by plants thru roots
  • 25.  
  • 26.  
  • 27. water
    • most important nutrient
  • 28. Carbohydrates, Proteins, Fats, Vitamins, and Minerals [04:25]
  • 29. Name that nutrient
  • 30. vitamins
    • 2 types:
    • fat soluble
    • water soluble
  • 31. water
    • most important nutrient
  • 32. complex carbohydrates
    • eg. fiber
    • can not be digested
    • found in plant foods
  • 33. minerals
    • not made by living things
    • present in soil
    • absorbed by plants thru roots
  • 34. simple carbohydrates
    • a.k.a. sugars
    • found naturally in fruits, milk & vegetables
    • glucose = main source of energy
  • 35.
    • made up of amino acids
  • 36. fats
    • provide 2X as much as energy as carbs.
    • classified in 2 groups:
      • saturated & unsaturated
  • 37.  
  • 38.
    • Pour some of the food into a Ziploc bag. Seal the bag with as little air in it as possible, then mash the food until you make a powder.
    • Fill the bag with some water and mix.
    • Let the mixture sit for at least one hour.
    • After the cereal mixture has been allowed to sit, pour some into a plastic cup.
    • Move a strong magnet against the side of the cup for about a minute. You should observe iron particles collecting on the side of the cup!