"Kinetic Energy and Potential Energy" Work and Mechanical Energy PPT Courseware 6

Description

"Kinetic Energy and Potential Energy" Work and Mechanical Energy PPT Courseware 6

Lesson objectives

Know what kinetic energy and potential energy are

Understand the factors related to the magnitude of kinetic energy and potential energy

Be able to use the control variable method and transformation method to study problems

Explore: What factors are related to the size of kinetic energy?

Conjecture: 1. The amount of kinetic energy is related to the speed of the object’s movement.

2. The amount of kinetic energy is related to the mass of the object

Design experimental plan:

The experimental method you want to use is __________;

Your inquiry steps are __________;

Your standard for comparing kinetic energy is __________.

What factors may determine the magnitude of gravitational potential energy?

Conjecture: 1. The magnitude of gravitational potential energy is related to the height at which the object is lifted.

2. The magnitude of gravitational potential energy is related to the mass of the object

Design experimental plan:

The experimental method you want to use is __________;

Your inquiry steps are __________;

Your standard for comparing the magnitude of gravitational potential energy is __________.

in conclusion:

When the mass is the same, the farther an object is lifted, the greater its gravitational potential energy

When the object is lifted to the same height, the greater the mass of the object, the greater the gravitational potential energy.

Exercise: How to make a clockwork car run longer?

A.Put the car in the classroom

B. Add two wheels to the car

C. Tighten the spring

D. Install electric lights on cars

what did you learn

1. Energy: An object can do work on the outside, which means that the object has energy.

2. Kinetic energy: The energy an object has due to motion.

The amount of kinetic energy is related to the mass and speed of the object.

3. Potential energy Gravitational potential energy: related to the mass of the object and the height to which it is lifted

Elastic potential energy: related to the degree of elastic deformation

4. Exploration method: Control variable method Transformation method

Trial test

1. What form of mechanical energy does the following object have:

Rocket taking off:_______________;

Falling raindrops:_______________;

Stretched rubber band:_______________.

2. An eagle with a larger mass and a swallow with a smaller mass fly in the air. If their kinetic energy is equal, then ____________ flies faster.

3. There is a line in Tang poetry that goes "The endless Yangtze River rolls in". This moving line vividly and vividly reflects that this great river contains a lot of kinetic energy.

4.—The object slides down the incline at a constant speed.

A. Kinetic energy increases, potential energy decreases

B. Kinetic energy and potential energy both decrease

C. Kinetic energy remains unchanged, potential energy decreases

D. Both kinetic energy and potential energy increase

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For more information about the "Work and Mechanical Energy Kinetic Energy and Potential Energy" PPT courseware, please click on the Work and Mechanical Energy PPT Kinetic Energy and Potential Energy PPT tag.

"Kinetic Energy and Potential Energy" Work and Mechanical Energy PPT Download:

"Kinetic Energy and Potential Energy" Work and Mechanical Energy PPT Download Part One: Classification Practice of Knowledge Points Knowledge Point 1 Energy 1. If an object can _____ externally, we say that the object has energy, or ___ for short. The more work an object can do, the greater the...

"Kinetic Energy and Potential Energy" work and mechanical energy PPT teaching courseware:

"Kinetic Energy and Potential Energy" Work and Mechanical Energy PPT Teaching Courseware Part One Content: Knowledge Points Basic Knowledge Point 1 Kinetic Energy 1. The following statement is correct (D) A. An object with energy must be doing work B. The greater the energy an object has The more work it does C. the object...

"Kinetic Energy and Potential Energy" Work and Mechanical Energy PPT:

"Kinetic Energy and Potential Energy" Work and Mechanical Energy PPT Part One Content: Preview Perception 1. Energy 1. Definition: The ability of an object to do work on the outside indicates that the object has energy. 2. International unit: Joule Symbol: J. 3. The more work an object can do, the more energy the object has..

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Update Time: 2024-11-22

This template belongs to Physics courseware People's Education Edition Physics for Grade 8, Volume 2 industry PPT template

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