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Forces and Motion

Developing Essential Skills for State Standards

Friction: K-12 TLC Guide

Quests Quests
PAGE ONE
What Is Force? 		PAGE TWO
Unbalanced Forces 		PAGE THREE
Mass and Inertia 		PAGE FOUR
Gravity 		PAGE FIVE
Friction 		PAGE SEVEN
Erosion
Answer Sheet State Standards Quest Archive
PAGE SIX: Drag
  1. Drag is wind resistance that slows down moving objects such as sprinters, race cars and spacecraft. Read this explanation of drag from NASA and answer this question:
    2.

    1. Which of these statements are true?

        2. A.    If drag is greater than thrust, the airplane's speed decreases.
        B.    If drag is less than thrust, the airplane's speed increases.
        C.    If thrust and drag are equal, the airplane will fly at a constant speed.
        D.    All of the above.
        E.    None of the above.



  2. Experiment using this screen from the BBC, complete the table and the quiz, and answer these questions:
    3.

    1. Which combination will make the truck travel farthest down the track?

        2. A.    Gradient=1, no weight, no parachute.
        B.    Gradient=2, small weight, no parachute .
        C.    Gradient=2, large weight, no parachute.
        D.    Gradient=2, large weight, small parachute.
        E.    Gradient=2, large weight, large parachute.

    2. Which combination will make the truck travel the shortest distance down the track?

        3. A.    Gradient=1, no weight, no parachute.
        B.    Gradient=2, small weight, no parachute.
        C.    Gradient=2, large weight, no parachute.
        D.    Gradient=2, large weight, small parachute.
        E.    Gradient=2, large weight, large parachute.

    3. Drag is:

        4. A.    A push force.
        B.    A pull force.
        C.    Both a push force and a pull force.
        D.    None of the above.

    4. Wadding a piece of paper into a ball before you throw it, helps the paper travel further because:

        5. A.    It increases the paper's mass.
        B.    It increases the force of gravity on the paper.
        C.    It decreases the drag on the paper.
        D.    All of the above.
        E.    None of the above.

    5. The purpose of a parachute is to:

        6. A.    Reduce friction.
        B.    Increase drag.
        C.    Reduce gravity.
        D.    All of the above.
        E.    None of the above.



TO PAGE FIVE: Friction TO PAGE SEVEN: Erosion
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This TLC Quest last edited 01/13/2007
This TLC Quest last revised 12/31/2006
This TLC Quest created 12/31/2006