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Knex 78890 - Education Amusement Park Experience Teachers Guide Manual

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LESSON 8
8: U
8: U
NDERSTANDING
NDERSTANDING
D
D
ISPLACEMENT
ISPLACEMENT
55
Am usement Par k Ex perienc e
ACTIVITY 4: DISPLACEMENT OF THE SEATS
PROCESS
Whole Class
1. Displacement refers to the distance between the original position of an object and its later position.
In this activity, students will investigate and experiment to determine whether or not there is any
pattern that occurs when the displacement of the seats on the Scrambler Ride is measured over
three rotations of the large arms.
In Groups
2. Ask the students to set up their experiment in the following way:
a. Remove the yellow Rod from the motor on the Scrambler so the ride can be turned by hand.
b. Place one or more sheets of butcher paper or newsprint under the ride. Be sure to use enough
paper - as you look down from above the ride as it turns, the seats should always pass over
the paper.
c. Select one seat on a small arm with a red Rod and mark it with masking tape. Do the same for
one seat with a yellow Rod.
d. With a marker, mark a tooth on the large yellow, horizontal Gear that is directly below one of the
blue Gears that travels around the yellow Gear. (See Fig. 1 below)
e. Move the seats on the two small arms that have been marked with tape in (c) above so they are
farthest from the center of the ride as possible. You do not want to move the blue Gear riding
on the large yellow Gear. Have your partner hold the blue Gear and yellow Gear in place while
you temporarily separate the Gears at the end of the large arm to swing the two seats into
position.
f. Place a dot on the paper just below the seat (with the masking tape) on the yellow Rod that is
furthest from the center of the ride. Mark this dot ‘Y start.’ Do the same for the marked seat on
the red Rod and label the dot ‘R start.’ You will measure all of your displacements from these
starting dots.
Gear
start point
10
th
tooth
… 57 …


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