Energy Transformation

Energy Transformation

What are we doing today (03/08/2021)

• Answer Review Questions

• We will explain how potential energy transform into kinetic energy and vice versa by investigating:

• 1. Bouncy ball

• 2. Roller Coaster

• 3. Pendulum

• Wrap-up with 2 questions

• Group Work: Practice Energy transformation in a trampoline.

Multiple Choice

Review Q: The ability to do work by applying force is called

• Work

• Energy

• Force

• Net Force

Review

Multiple Choice

Review Q: what are the two forms of mechanical energy?

• Chemical and electrical energy

• Nuclear and chemical energy

• Potential and Kinetic energy

• Thermal and heat energy

Multiple Choice

Review Q: What is Potential Energy ?

• its the thermal energy

• Stored energy or energy due to its position.

• Energy of motion

Multiple Choice

Review Q: What are the two factors that determine the measure of Potential Energy (GPE)?

• Friction and mass

• Height and Friction

• mass and movement

• Height and mass

Multiple Choice

Review Q: What is Kinetic Energy ?

• its the thermal energy

• Stored energy or energy due to its position.

• Energy of motion

Multiple Choice

Review Q: What are the two factors that determine the measure of Kinetic Energy?

• Friction and mass

• Speed and Mass

• mass and movement

• Height and mass

Multiple Choice

Does still objects has Energy? what kind of Energy?

• No

• Yes, Potential Energy

• Yes, Kinetic Energy

Open Ended

Do objects move on their own? what do objects need to move or work?

Multiple Choice

Which vehicle has more kinetic energy?

• A

• B

Open Ended

What does Law of conservation of Energy?

How can we tell that the book on the top shelf has more potential energy?

• We can’t see potential energy, but we can see what happens when that potential energy is put to use. In this case, we could see what happens when the book falls from the shelf. The book from the top shelf will hit the ground harder.

As the book falls, its potential energy converts into kinetic energy.

Do you think kinetic energy could be converted to potential energy, too?

https://www.youtube.com/watch?v=b_yGiXMTOlg

Multiple Choice

Energy transformation occur when....

• energy change from one form to another.

• two forces slides together that are touching.

• a chemical reaction take place.

Can you explain energy transformation in a roller coaster?

Multiple Choice

What kind of energy is present at point A?

• Potential

• Kinetic

Multiple Choice

What kind of energy is present at point B?

• Potential

• Kinetic

Multiple Choice

What kind of energy is present at point C?

• Potential

• Kinetic

Read the following slide

Complete the questions in groups.

Read and review before answering the following questions.

Multiple Choice

At which point does she have the GREATEST elastic potential energy?

• A

• B

• C

Multiple Choice

At which point does she have the LEAST elastic potential energy?

• A

• B

• C