HHE: Lesson 2.3 (9/8)
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One of the rescue workers has a special flashlight; it has a crank, and the light shines when the crank is turned.
Since the rescue worker has never had to replace the batteries or plug in the flashlight, she thinks this flashlight works without an energy source. Do you agree or disagree?
I think the flashlight ...
I think this because . . .
Annotate the following energy model.
CFS:
Accurately describes energy types (KE/PE) by analyzing the observable movement of objects
Accurately identifies the movement of PE and KE energy units in a system
Annotate the following energy model.
CFS:
Accurately describes energy types (KE/PE) by analyzing the observable movement of objects
Accurately identifies the movement of PE and KE energy units in a system
Identify how the following parts of the athlete machine could increase the amount of energy they have.
https://www.youtube.com/watch?v=M0jmSsQ5ptw&t=68s
CFS:
- Accurately describes energy types (KE/PE) by analyzing the observable movement of objects
- Accurately identifies the movement of PE and KE energy units in a system
Skydiver: How could you increase the skydivers initial potential energy?
"I could increase the PE of the skydiver by... "
Biker: How could you increase the bikers kinetic energy (speed)?
"I could increase the KE of the biker by... "
Car: How could you increase the car’s initial potential energy?
"I could increase the KE of the car by... "
Runner: How could you increase the runner’s initial kinetic energy?
"I could increase the KE of the runner by... "
Annotate the following:
- Circle the location with the most PE and the location with the most KE
- Circle the location with the least PE and the location with the least KE
Mr. Hwung really likes to fly fast! How would you suggest that he increase the speed of his fall by modifying the experimental variables (his mass or starting height).
CFS:
Accurately describes energy types (KE/PE) by analyzing the observable movement of objects
Accurately identifies the movement of PE and KE energy units in a system
Explanation 1-2 pieces of supporting evidence with rationale and engineering design decisions
"I could increase the speed of the Mr. Hwung by...
I know this will increase Mr. Hwung's speed because"
Annotate and analyze the wrecking balls below. They are different sizes but are lifted to the same height from the ground and from the house.
Which wrecking ball has the greatest amount of stored energy (PE) as they crash into the building?
How would you suggest builders increase either PE or KE to have a greater impact on collision?
CFS:
Accurately describes energy types (KE/PE) by analyzing the observable movement of objects
Accurately identifies the movement of PE and KE energy units in a system
Explanation 1-2 pieces of supporting evidence with rationale and engineering design decisions
"I could increase the energy of the wrecking ball by...
I know this will increase PE and KE because"