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HHE: Lesson 2.3 (9/8)

Last updated over 2 years ago
13 questions

Objective: SWBAT identify the differences between PE and KE by analyzing the movement of objects in a system.

Do Now:

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?


0

I think the flashlight ...

0

I think this because . . .

Guided Notes: Energy Transfer

0

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

0

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

Practice:

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
0

Skydiver: How could you increase the skydivers initial potential energy?

0

Biker: How could you increase the bikers kinetic energy (speed)?

0

Car: How could you increase the car’s initial potential energy?

0

Runner: How could you increase the runner’s initial kinetic energy?

Independent Practice:

Analyze the Skydiver below and identify transfer or changes in PE and KE in the sysetm.
0

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

0

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

Exit TIcket:

0

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.

0

Which wrecking ball has the greatest amount of stored energy (PE) as they crash into the building?

3

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