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ANSWERS
PART ONE- QUESTIONS
1. The rubber band unwinds and sends the spool spinning
across the floor
2. Sunlight was absorbed by green plants, cattle that ate
the plants obtained the plant's energy, people who ate the
cattle obtained their energy, with this energy people twisted
the rubber band, the rubber band stored the energy of the
twists, when the band was released the stored energy turned
into the energy of the spin, as the spool spun the energy
was transferred to the forward movement of this vehicle
3. Elastic potential energy.
4. Potential energy of the twisted rubber band is converted
to the kinetic energy of the spool's movement.
5. It is dissipated as heat, sound, or the energy is no longer
useful.
THINK ABOUT IT
Friction. The rough edge produced more friction so
the spool was able to better "grab" the floor. In contrast,
the slick edge did not produce enough spool friction to
propel the vehicle quickly.
CURRICULUM
LINKS
| Technology
: |
Robotics
Inventions
Engineering |
| Physical
Science : |
Machines
Modeling |
| Biology/Life
Science: |
|
Evolution
|
| Physics:
|
Motion
Energy transfers
Friction |
|
NATIONAL
SCIENCE STANDARDS
| Science
As Inquiry |
5-8:
Abilities
necessary to do scientific inquiry,
Understandings about scientific inquiry |
9-12:
Abilities
necessary to do scientific inquiry,
Understandings about scientific inquiry |
| History
and Nature of Science |
|
5-8:
Science as a human endeavor
|
9-12:
Nature
of science
|
| Science
& Technology |
5-8:
Abilities of technological design |
9-12:
Abilities
of technological design |
| Physical
Science |
5-8:
Transfer of Energy |
9-12:
Motions and forces |
|
 Back
to Teaching Guide
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