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Unit: Energy

Page history last edited by Shu-Yee Chen 10 years, 2 months ago

 

Unit: Energy

 

 

Central Concept-Energy: Energy is a quantitative property of a system that depends on the motion and interactions of matter and radiation within that system. Within a system, the total energy is conserved. Energy is continually transferred from one object to another and between its various possible forms. Mechanical energy generally refers to some combination of motion and stored energy in an operating machine.

 

Cross Cutting Concept- Systems and system models:  By defining the boundaries of a system, it provides tools for understanding and testing ideas that are applicable throughout science and engineering.

 

Science and Engineering Practices-Analyzing and interpreting data: After data has been collected, it must be analyzed in order to derive meaning. This allows scientists and engineers to identify significant features and patterns in the data, which can lead to drawing conclusions and possible solutions.

 

Learning Objectives:

By the end of this unit, you should be able to.... (Those in bold will be essential & will be assessed formally in the curriculum)

1.

Identify appropriate standard international units of measurement for energy (J) , work (J) or (Nm), and power (W).

2.

Perform calculations relating to an object’s gravitational potential energy and kinetic energy.

3.

Explain conservation law for energy and mechanical energy.

4.

Apply the law of conservation of mechanical energy to simple systems (including simple harmonic oscillators) both quantitatively and conceptually.

5.

Provide examples of how energy can be transformed from kinetic to potential and vice versa.

6.

Relate the net work done on an object to its change in kinetic energy (work-energy theorem).

7.

Recognize “energy” as the ability to work.

8.

Perform calculation relating to the work done on an object, the force exerted on the object, the displacement of the object, and the directions of the force and displacement.

9.

Perform calculations to determine the power of an object doing work.

10.

Describe the relationship among energy, work, power, and time conceptually.

 

 Vocabulary:

energy gravitational potential energy
kinetic energy
mechanical energy
conservation of energy
work
 Work-energy Theorem
power Joule Watts
calories simple harmonic motion      

 


Worksheets/Labs/Handouts: 

 

Past Year Worksheets:

 

Supplement Material:  

 

 

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