Science

Q1: Why do scientist use models?

A.) Scientist use models to learn about things that are too small, too late, or too complex to observe directly.

B.) Scientist use models because doing so is always part of the scientific method.

C.) Scientist use models because they always work exactly like the systems they represent. ****

D.) Scientist use models so they have a opportunity to use their hands

Q2: Which of the following is not a model?

A.) An ant farm

B.) A bicycle

C.) An atlas***

D.) A plastic human skeleton

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  1. I would go with B on the first. On the second, looking at an atlas map, pick a location, and ask what happens if one goes West? You can predict from that. I count maps as models.

    What model does a bicycle demonstrate?

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    bobpursley
  2. The answers are
    A
    B
    B
    D
    D
    100%

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  3. Thanks I HATE MS. SUE I got 100%

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  4. The second one is kind of a trick question... An atlas is not a model lol. But it contains maps which are considered models. It should be on the list as Maps. Not a book.

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  5. the correct answers are
    A
    B
    B
    D
    D
    100% i just took the test and sugarPie is correct

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  6. Thanks_SugarPie!!!

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  7. their is 20 qestions !

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  8. Lesson 8: Models and Systems
    Science 8 A Unit 1: Introduction to Science 8

    Models and Systems

    Responses saved. The final score is 5/5 (100%).

    Multiple Choice

    1. Why do scientists use models? (1 point)
    *A. (1 pt) Scientists use models to learn about things that are too small, too large, or too complex to observe directly.
    B. (0 pts) Scientists use models because doing so is always part of the scientific method.
    C. (0 pts) Scientists use models because they always work exactly like the systems they represent.
    D. (0 pts) Scientists use models so they have an opportunity to work with their hands.
    1/1 point

    2. Which of the following is not a model? (1 point)
    A. (0 pts) an ant farm
    *B. (1 pt) a bicycle
    C. (0 pts) an atlas
    D. (0 pts) a plastic human skeleton
    1/1 point

    3. Turning on the switch in a flashlight starts a chemical reaction in the batteries. The chemical energy is turned to light energy and the flashlight lights up. Which part of this systems is an example of a process? (1 point)
    A. (0 pts) Turning on the switch is a process.
    *B. (1 pt) The conversion of chemical energy to light energy is a process.
    C. (0 pts) The light that the flashlight produces is a process.
    D. (0 pts) Turning the switch off is a process.
    1/1

    4. You are exercising on a hot day. Your body temperature goes up. You begin to sweat. The sweat cools your body. The rise in your body temperature that signals to start sweating is an example of:
    (1 point)
    A. (0 pts) input.
    B. (0 pts) process.
    C. (0 pts) output.
    *D. (1 pt) feedback.
    1/1 point

    5. How is a model of an atom different from a real atom? (1 point)
    A. (0 pts) A model of an atom is not as big as an actual atom.
    B. (0 pts) A model of an atom is the same as a real atom.
    C. (0 pts) A model of an atom is more complex than a real atom.
    *D. (0 pts) A model of an atom is not as small as an actual atom.
    1/1 point

    The final score is 5/5 (100%).

    (Remember, this is for connexus users 8th grade only under this topic.)

    Have a Nice Day!

    - Lady Jiskha

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  9. In Other Words, The User "SugarPie" is Right, 100%

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  10. You guys! @SugarPie is 100% correct! :))

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  11. wait there are 20 questions tho

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  12. there is not 20 questions only 6 but thanks sugar pie for the answers!

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  13. 1. A
    2.B
    3.B
    4.D
    5.D

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  14. I have 6 questions...

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