Podcast
Questions and Answers
What unit is used to measure energy and work?
What unit is used to measure energy and work?
- Watt (W)
- Pascal (Pa)
- Joule (J) (correct)
- Newton (N)
Energy can be created and destroyed, depending on the form it takes.
Energy can be created and destroyed, depending on the form it takes.
False (B)
What are the two main categories used to classify energy?
What are the two main categories used to classify energy?
Potential energy and kinetic energy
A windmill lifting water from a well is an example of ______ being done.
A windmill lifting water from a well is an example of ______ being done.
Match the scenario with whether work is being done (Yes/No):
Match the scenario with whether work is being done (Yes/No):
Which of the following factors does kinetic energy depend on?
Which of the following factors does kinetic energy depend on?
Potential energy is the energy of motion.
Potential energy is the energy of motion.
Give two examples of how potential energy can be stored.
Give two examples of how potential energy can be stored.
When a roller coaster car is initially pulled up the tallest hill, it gains a great deal of ______ energy.
When a roller coaster car is initially pulled up the tallest hill, it gains a great deal of ______ energy.
Classify the following forms of energy as either potential or kinetic:
Classify the following forms of energy as either potential or kinetic:
Which of the following scenarios involves the conversion of potential energy to kinetic energy?
Which of the following scenarios involves the conversion of potential energy to kinetic energy?
If two cars of different masses are moving at the same speed, the car with the smaller mass has more kinetic energy.
If two cars of different masses are moving at the same speed, the car with the smaller mass has more kinetic energy.
Define work involving an object?
Define work involving an object?
Kinetic energy is greatest at the ______ and potential energy is greatest at the ______ of a basketball's arc.
Kinetic energy is greatest at the ______ and potential energy is greatest at the ______ of a basketball's arc.
Match the form of energy with provided example:
Match the form of energy with provided example:
Why do roller coasters work?
Why do roller coasters work?
Potential energy can only be stored through mechanical means, like stretching or lifting objects.
Potential energy can only be stored through mechanical means, like stretching or lifting objects.
What happens to a basketball's energy as it rises into the air?
What happens to a basketball's energy as it rises into the air?
Energy is transferred or work is done when a force causes an object to change its ______, ______ or ______.
Energy is transferred or work is done when a force causes an object to change its ______, ______ or ______.
Match the following terms:
Match the following terms:
Flashcards
What is Energy?
What is Energy?
Energy is the measure of the ability to do work and is measured in Joules (J).
What is Work?
What is Work?
Work is a force that causes an object to change its shape, position, or direction and is measured in Joules (J).
Kinetic Energy
Kinetic Energy
Energy that is associated with motion.
Potential Energy
Potential Energy
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Kinetic Energy and Speed
Kinetic Energy and Speed
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Kinetic energy and mass
Kinetic energy and mass
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Stored potential energy
Stored potential energy
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Potential energy due to work
Potential energy due to work
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How do roller coasters work?
How do roller coasters work?
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Energy transformation
Energy transformation
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Thermal energy
Thermal energy
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Radiant/Light energy
Radiant/Light energy
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Nuclear energy
Nuclear energy
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Sound energy
Sound energy
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Gravitational energy
Gravitational energy
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Mechanical energy
Mechanical energy
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Study Notes
- Key Question: What is the difference between types and forms of energy?
Relationship Between Energy and Work
- Energy is the measured capacity to do work.
- Energy is measured in Joules (J).
- Work is a force that changes an object's shape, position, or direction.
- Work is measured in Joules (J).
Types of Energy
- Energy is classified into two main types: potential and kinetic.
- Kinetic energy is the energy of motion.
- Potential energy is stored energy or energy at rest.
Kinetic Energy
- Kinetic energy is present when something is moving.
- The faster an object moves, the more kinetic energy it possesses.
- The greater the mass of a moving object, the more kinetic energy it has.
- Kinetic energy depends on both mass and velocity.
Potential Energy
- Potential energy is stored energy.
- Potential energy can be stored in fuels, the nucleus of an atom, and in foods.
- Potential energy can be stored due to work done on an object.
- Examples of potential energy include a stretched rubber band, a wound watch, a pulled-back bow's arrow, and a lifted brick.
Kinetic-Potential Energy Conversion
- Roller coasters utilize the conversion between potential and kinetic energy to power the cars.
- Cars are initially pulled up the tallest hill on a roller coaster, storing a great deal of potential energy.
- As a basketball player throws a ball into the air, an energy conversion occurs.
Forms of Energy
- Energy can be converted from one form to another, but it cannot be created or destroyed.
- Forms of energy include heat/thermal, light/radiant (including solar), nuclear, sound, gravitational, and mechanical.
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