Energy Physical Science

​Physical Science Chapter 6 - Energy

​Physical Science Chapter 6 - Energy

Open Ended

How do you think a rollercoaster works? For example, If I was going to ride the fury, which is located in carowinds, describe how the roller coaster is able to pull you around the track?

​Physical Science Chapter 6 - Energy

​If you mentioned energy, mass, gravity, and height in your answer than you are somewhat correct!

​Physical Science Chapter 6 - Energy

Example: Urban Heat Island Effect...
Why do you think cities are hotter than rural areas?

​Physical Science Chapter 6 - Energy

Why is energy important?
- Energy moves and drives everything!
- For example, the water cycle is a never-ending system that runs by the use of energy.
- As humans, we consume and release energy (sandwich) (we release heat as by product)
- There are two forms of energy: Potential and Kinetic Energy

Open Ended

Do you think a sandwich has any energy? Explain your reasoning in two sentences.

​Physical Science Chapter 6 - Energy

What is energy?
- Energy is not easily definable...
- Meaning we do not know what energy is, but we do know what it does and has the potential to do.
- Energy is a positive scalar Quantity measured in Joules.
- Energy can be defined as the ability to do work
- Work = force x distance travelled...

​Physical Science Chapter 6 - Energy

What is energy?
***When work is done in a system, the system loses energy!!!***

Open Ended

How are work and energy interchangeable in science. Define both terms in your own words. This should be two separate sentences...

​Physical Science Chapter 6 - Energy

What are the two Forms of Energy?
- There are many different types of energy including: light, radiation, heat, elastic, potential, magnetic, nuclear, mechanical and many more! We will focus alot on mechanical energy = energy that is possessed by an object due to its motion or due to its position
- The TWO main FORMS of ENERGY are Potential and Kinetic Energy.

​Physical Science Chapter 6 - Energy

What is Potential Energy?
- Potential energy is energy that is dependent on position, and a force that has the potential to move an object from its current position.
- The easiest way to remember potential energy: roller coasters, pumpkin launching, food, and light bulbs!

​Physical Science Chapter 6 - Energy

What is Kinetic Energy?
- Kinetic energy is the release of the potential energy within a system
- All moving matter consists of kinetic energy (movement of energy).
- Systems usually have some type of potential and/or kinetic energy.

​Physical Science Chapter 6 - Energy

Video Segment: Pumpkin Launching!

Open Ended

Using the video segment in the previous slide, describe when the slingshot (with the watermelon on it) has potential energy? Why do you believe your answer is correct?

Open Ended

Using the video segment in the previous slide, describe when the slingshot (with the watermelon on it) has kinetic energy? Why do you believe your answer is correct?

Multiple Choice

What is Energy?

• The ability to do anything

• The ability to cause change

• The investigation of nature

• A fact of life

Multiple Choice

What is an example of kinetic energy?

• A bird sitting in a tree

• A bouncy ball on the table

• A car driving on the highway

• A book on shelf

Multiple Choice

What is an example of potential energy?

• A bowling ball rolling down a lane

• A car parked in a lot

• An apple falling from a tree

• Sunlight heating up the atmosphere

Multiple Choice

Which has more potential energy?

• A bird in a tree

• A car in the garage

• An airplane before takeoff

• A child on a swing

Multiple Choice

Energy cannot be created or destroyed.

• True

• False

Multiple Choice

Total energy will always change in a system of objects.

• True; energy is destroyed due to friction

• False; energy cannot be destroyed, only transferred.

Multiple Choice

What is kinetic energy?

• Energy that results from the position or shape of an object
• Potential energy related to an object's height
• The energy an object has due to its motion

Multiple Choice

When energy is transferred, the object upon which the work is done ______ energy.

• Gains 
• Loses 

Multiple Choice

Mechanical energy can be defined as:

• the energy associated with the motion and position of an object.
• is energy stored in the bonds of chemical compounds
• a form of energy that is reflected or emitted from objects in the form of electrical and magnetic waves that can travel through space. 

Multiple Choice

What is potential energy?

• The rate at which work is done
• The amount of energy transferred in a unit of time
• Energy that results from the position or shape of an object

Multiple Choice

What is gravitational potential energy 

• Potential energy related to an object's height 
• Energy that results from the position or shape of an object
• The energy associated with objects that can be compressed or stretched.  

Multiple Choice

What is elastic potential energy?

• Energy that results from the position or shape of an object
• Potential energy related to an object's height
• The energy associated with objects that can be compressed or stretched.  

Multiple Choice

Which of the following is an example of a form of energy?

• Potential Energy
• Kinetic Energy
• Both answers are correct

Multiple Choice

If I throw a baseball across the room, did I do work on the baseball?

• Yes - Work = Force x Distance, thus you performed work on the baseball, and transferred your mechanical energy to the baseball
• No, even though work = force x distance, there was no energy transfer through the ball. This is because the ball cannot receive energy like other working systems.

Multiple Choice

At which point does the roller coaster have the greatest gravitational potential energy (GPE)?

• 1
• 2
• 3
• 4

Multiple Choice

At which point does the roller coaster have maximum kinetic energy?

• 1
• 2
• 3
• 4

Multiple Choice

When does the pendulum have maximum Gravitational Potential Energy (Use the First Image to the Left!!!!)?

• A
• Both A and G
• F
• G

Multiple Choice

When does the pendulum have maximum Kinetic Energy (Use the First Image to the Left!!!!)?

• A
• D
• F
• G

Open Ended

Use the website link: https://phet.colorado.edu/sims/html/energy-skate-park/latest/energy-skate-park_all.html

Experiment with the skater. Make sure that the energy (+) is enabled along with all the things that can be checked (use image).

Question: When does the skater have maximum potential energy? Explain your reasoning using the lab above. Also, what is the definition of potential energy?

Open Ended

Use the website link: https://phet.colorado.edu/sims/html/energy-skate-park/latest/energy-skate-park_all.html

Experiment with the skater. Make sure that the energy (+) is enabled along with all the things that can be checked (use image).

Question: When does the skater have maximum kinetic energy? Explain your reasoning using the lab above. Also, what is the definition of kinetic energy?