Energy Forms
Energy Transformation
Energy Models

Potential Energy

Kinetic Energy

100

What is the definition of kinetic energy?

The energy of an object due to its motion

100

What happens to kinetic energy when an object comes to a stop?

The kinetic energy is transformed into other forms of energy, such as thermal energy due to friction.

100

What is a model in science?

A simplified representation of a system or phenomenon used to help understand and predict its behavior.

100

What factors determine gravitational potential energy?

Mass, height above the ground, and the acceleration due to gravity.

100

What formula is used to calculate kinetic energy?

KE=21mv2

200

Name two forms of potential energy.

Gravitational potential energy and elastic potential energy.

200

Describe an example of energy transformation in a roller coaster.

As a roller coaster climbs a hill, kinetic energy is converted to potential energy; as it descends, potential energy is converted back to kinetic energy.

200

How can diagrams help illustrate energy concepts?

Diagrams can visually represent energy forms and transformations, making it easier to understand the relationships between different types of energy.


200

How does height affect potential energy?

As height increases, gravitational potential energy increases.

200

How does speed affect kinetic energy?

Kinetic energy increases with the square of the speed; doubling the speed quadruples the kinetic energy.

300

What is thermal energy?

The energy that comes from the temperature of a substance; it is the total kinetic energy of the particles in an object

300

How can electrical energy be transformed?

Name at least 3 ways to earn the full 300 points 

Electrical energy can be transformed into any of the following:

- Light Energy (like in a light bulb)

- Thermal Energy ( like in a toaster)

- Kinetic Energy

- Spring Potential Energy

- Gravitational Potential Energy


300

What is a computer simulation in the context of energy models?

 A computer simulation is a digital representation that allows users to manipulate variables and observe how energy changes within a system.

300

Give an example of an object with high gravitational potential energy.

A book on a high shelf has high gravitational potential energy due to its height. 

*students can use any example that makes sense*

300

Provide an example of an object with kinetic energy.

A moving car possesses kinetic energy based on its mass and speed.

*Students can use any example that makes sense*

400

How is gravitational potential energy calculated?

Include what each variable means as well. 

Example: v= velocity

Gravitational potential energy is calculated using the formula PE=mgh, where m is mass, g is the acceleration due to gravity, and h is the height above the reference point.

400

What is the law of conservation of energy?

The law states that energy cannot be created or destroyed; it can only change from one form to another.

400

How can you use a model to show the relationship between kinetic and potential energy?

You can create a physical model of a pendulum showing how potential energy at the highest point is converted to kinetic energy at the lowest point. 

You can also use:

Diagrams

Bar Graphs 

Stacked Bar Graphs

400

How is potential energy related to the stability of an object?


Hint: Think about where an object has the most potential energy. Why might this make an object stable or unstable?

Objects with higher potential energy are less stable and have a greater tendency to fall or move downward.

400

Can kinetic energy be negative? Why or why not?


Hint: Is kinetic energy a vector or scalar quality? How might that affect the positive and/or negative value of something?

No, kinetic energy cannot be negative because it is a scalar quantity and is always calculated as a positive value.

500

Explain the relationship between kinetic energy and mass.

Kinetic energy is directly proportional to the mass of an object; as mass increases, kinetic energy increases, calculated by the formula KE=21mv2.

500

Provide an example of energy transformation involving Kinetic energy to potential energy in a roller coaster.

The rollercoaster starts off with very little potential energy and 0 kinetic energy because it is not moving

the roller coaster has kinetic energy as it is climbing to the top

at the very top of the rollercoaster, the potential energy is the highest

halfway down the roller coaster ride, the roller coaster will have equal parts kinetic and potential energy.  

500

Explain the importance of using models to understand energy changes in systems.

Models help visualize and predict energy changes, allowing for a better understanding of complex systems and interactions.

500

Describe how energy is stored in a compressed spring.

 A compressed spring stores elastic potential energy (EPE), which can be released when the spring is allowed to return to its original shape.

500

Explain how the concept of kinetic energy is important in sports.

Understanding kinetic energy helps athletes optimize their performance by analyzing motion, speed, and mass to improve techniques and outcomes. 


* any answer that contained the key words will be accepted*

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