Practical Quiz 2


  1. If you are under 30 years old, you do not need to think about heart disease.
a. true
b. false

  1. There are some good reasons for eating healthy foods. But why bother, people feel just as well whether or not they eat healthy foods. Besides, eating what you like is more pleasurable.
a. true
b. false

  1. How many karats is pure gold?
a. 10
b. 16
c. 24

  1. The average person needs about how many calories of food energy each day?
    a. 200
    b. 1500
    c. 15000


    1. Oil reduces friction because
    a. Molecules are always moving, oil slows down that motion. Slower moving molecules get out of each others way more easily.
    b. Oil keeps moving surfaces separate from each other.
    c. Friction produces heat. Oil provides a route for heat to escape. Lower temperatures means less binding of the surfaces.
    d. Oil disolves molecules at the surfaces of materials so they flow out of each others way.


    1. Knives work by...
    a. Pressure at the knife's cutting edge causes heating of the material. The heat causes the material to loose strength and separate.
    b. The motion of the molecules in the knife's edge is what actually does the cutting.
    c. The force applied by the knife is concentrated to a small area along the knife's edge.

    1. What is the best color of clothes to wear in hot weather?
    a. red
    b. black
    c. white
    d. makes no difference

    1. Where should you go for shelter if caught outdoors in a thunderstorm?
    a. under a tall tree; if lightning strikes it will follow the tree instead of going through your body
    b. go to an open area where there are no tall objects to attract lightning
    c. you might as well stay where you are, one place is about as safe from lightning as another
    d. the lowest place you can find, lightning will more likely strike high objects

    1. You are swimming in the ocean. What should you do if a rip current is carrying you away from shore?
    a. Relax and go with the flow. Rip currents are short lived. When motion stops swim to shore.
    b. Wave your arms and call for help.
    c. Swim parallel to the shore until you are out of the current. Then swim to shore.
    d. Take the shortest distance path back to shore.


    1. To help avoid food poisoning when cooking raw meat in a microwave oven:
    a. Do not allow meat to be unrefrigerated for more than one hour
    b. Use soap to wash hands and all kitchen surfaces that were contacted by raw meat
    c. Cover food to be cooked in the microwave with a cover that will trap steam
    d. both a and b
    e. all of the above



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