Energy Transformations by Michelle Torelli & Mohamed Marzouk
RESEARCH AND EXPERIMENTS:
Through research we encountered a variety of experiments to gain knowledge of our topic, Energy Transformations. We gathered that there is Potential, Kinetic, and Elastic energy. In one simple experiment of dropping a ball both factors of Potential and Kinetic was shown. When the ball is in the air Potential (gravity) is stored, once released the ball's energy transforms from potential to kinetic as kinetic energy becomes greater as the stored (potential) energy is transferred. Another experiment done was of a catapult launching an object through the air. Depending on the structure of the catapult there is Elastic energy within a spring-like material to then launch the object, the transfer of energy is from Elastic to Kinetic but may be dissipation where some of the energy is wasted due to friction.
HOW TO SHOW THROUGH QUALITATIVE DATA:
There are several ways to express Energy Transformations through visuals such as LOL diagrams and pie charts. LOL diagrams are diagrams showing Initial Energy, The Flow of Energy, and Final Energy. Pie Charts represent qualitative and/or quantitative of how the energy is being transferred.
Example 1: (LOL diagram)
Scenario: Free Fall of a Ball = Potential (gravitational) to Kinetic (before the ball comes in contact with another force)
Example 2: (Pie Chart)
Scenario: Catapult Launching an Object = Elastic energy becomes kinetic over time
GENERAL UNDERSTANDING:
Overall, Energy Transformation "is the process of changing energy from one form to another." Energy Transformation is in everyday life from dropping a ball to sliding down a playground slide. Energy can be potential (stored), kinetic (moving)
elastic (spring constant), dissipation (lost), and radiation(waves). Throughout the process of energies changing there can be more than one in existence. For example you may have a dart shoot into a ceiling and then remain in place due to initially the dart had kinetic energy then one hits the ceiling dissipated energy but also has some potential (gravitational) energy.
4. An example of the types of questions (multiple choice) related to your topic that might appear on the PSSA with an explanation of how you can decide on the correct answer.
A child kicked a soccer ball. How is energy being transferred?
A) Potential (Gravitational)
B) Kinetic
C) Dissipation
D) Radiation
Explanation: Since the ball is in motion the only logical answer is Kinetic.
What units is energy measured in?
A) Newtons
B) Kilograms
C) Joules
D) Pounds
Explanation: With process of elimination; Newtons measures force, kilograms measures mass, and pounds measures weight with the only option left is "Joules".
Which energy transformation is used to cook food in a microwave?
A) Radiation
B) Dissipation
C) Friction
D) Gravity
Explanation: Radiation travels in waves which cooks food in a microwave its a type of heat. Choices B,C, and D are irrelevant.
Sound is _______ energy?
A) Heated
B) Dissipated
C) Cold
D) Kinetic
Explanation: When sound is distributed it transforms into nothing more than just rhythms or syllables to our ears. When energy is not transferred than it is lost; dissipated.
Through research we encountered a variety of experiments to gain knowledge of our topic, Energy Transformations. We gathered that there is Potential, Kinetic, and Elastic energy. In one simple experiment of dropping a ball both factors of Potential and Kinetic was shown. When the ball is in the air Potential (gravity) is stored, once released the ball's energy transforms from potential to kinetic as kinetic energy becomes greater as the stored (potential) energy is transferred. Another experiment done was of a catapult launching an object through the air. Depending on the structure of the catapult there is Elastic energy within a spring-like material to then launch the object, the transfer of energy is from Elastic to Kinetic but may be dissipation where some of the energy is wasted due to friction.
HOW TO SHOW THROUGH QUALITATIVE DATA:
There are several ways to express Energy Transformations through visuals such as LOL diagrams and pie charts. LOL diagrams are diagrams showing Initial Energy, The Flow of Energy, and Final Energy. Pie Charts represent qualitative and/or quantitative of how the energy is being transferred.
Example 1: (LOL diagram)
Scenario: Free Fall of a Ball = Potential (gravitational) to Kinetic (before the ball comes in contact with another force)
Example 2: (Pie Chart)
Scenario: Catapult Launching an Object = Elastic energy becomes kinetic over time
GENERAL UNDERSTANDING:
Overall, Energy Transformation "is the process of changing energy from one form to another." Energy Transformation is in everyday life from dropping a ball to sliding down a playground slide. Energy can be potential (stored), kinetic (moving)
elastic (spring constant), dissipation (lost), and radiation(waves). Throughout the process of energies changing there can be more than one in existence. For example you may have a dart shoot into a ceiling and then remain in place due to initially the dart had kinetic energy then one hits the ceiling dissipated energy but also has some potential (gravitational) energy.
4. An example of the types of questions (multiple choice) related to your topic that might appear on the PSSA with an explanation of how you can decide on the correct answer.
A child kicked a soccer ball. How is energy being transferred?
A) Potential (Gravitational)
B) Kinetic
C) Dissipation
D) Radiation
Explanation: Since the ball is in motion the only logical answer is Kinetic.
What units is energy measured in?
A) Newtons
B) Kilograms
C) Joules
D) Pounds
Explanation: With process of elimination; Newtons measures force, kilograms measures mass, and pounds measures weight with the only option left is "Joules".
Which energy transformation is used to cook food in a microwave?
A) Radiation
B) Dissipation
C) Friction
D) Gravity
Explanation: Radiation travels in waves which cooks food in a microwave its a type of heat. Choices B,C, and D are irrelevant.
Sound is _______ energy?
A) Heated
B) Dissipated
C) Cold
D) Kinetic
Explanation: When sound is distributed it transforms into nothing more than just rhythms or syllables to our ears. When energy is not transferred than it is lost; dissipated.
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