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Questions and Answers
A moving car possesses kinetic energy. Which of the following changes would result in the greatest increase in its kinetic energy?
A moving car possesses kinetic energy. Which of the following changes would result in the greatest increase in its kinetic energy?
- Doubling the mass of the car.
- Doubling the speed of the car. (correct)
- Increasing the speed of the car by 50%.
- Decreasing the mass of the car by half.
Potential energy is the energy of motion, while kinetic energy is stored energy due to position or condition.
Potential energy is the energy of motion, while kinetic energy is stored energy due to position or condition.
False (B)
Explain how the height and mass of an object affect its gravitational potential energy.
Explain how the height and mass of an object affect its gravitational potential energy.
Gravitational potential energy increases with both height and mass. A higher object or a more massive object has greater gravitational potential energy.
When a bow is drawn back, it stores ______ potential energy.
When a bow is drawn back, it stores ______ potential energy.
Match the following types of energy with their descriptions:
Match the following types of energy with their descriptions:
Which of the following best describes the relationship between energy and work?
Which of the following best describes the relationship between energy and work?
Sound energy can travel through a vacuum.
Sound energy can travel through a vacuum.
Describe how a guitar string demonstrates both kinetic and sound energy.
Describe how a guitar string demonstrates both kinetic and sound energy.
The energy stored in the nucleus of an atom is called ______ energy.
The energy stored in the nucleus of an atom is called ______ energy.
Why does hot chocolate have more thermal energy than a block of ice of the same mass?
Why does hot chocolate have more thermal energy than a block of ice of the same mass?
Flashcards
Energy
Energy
The ability to cause change.
Kinetic Energy
Kinetic Energy
Energy due to motion. Depends on speed and mass.
Potential Energy
Potential Energy
Stored energy due to interactions between objects or particles.
Gravitational Potential Energy
Gravitational Potential Energy
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Elastic Potential Energy
Elastic Potential Energy
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Chemical Potential Energy
Chemical Potential Energy
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Work
Work
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Mechanical Energy
Mechanical Energy
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Sound Energy
Sound Energy
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Thermal Energy
Thermal Energy
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Study Notes
Forms of Energy
- Energy is the ability to cause change.
- Kinetic energy is energy due to motion.
- The kinetic energy of a moving object depends on its speed and its mass.
- Potential energy is stored energy due to the interactions between objects or particles.
- Gravitational potential energy is energy stored between an object and Earth.
- It depends on the object's mass and its height above the ground.
- Elastic potential energy is energy stored when an object is compressed or stretched.
- Chemical potential energy is energy stored in the bonds between atoms.
Energy and Work
- Work is the transfer of energy to an object by a force that makes the object move in the direction of the force.
- Work is only being done while the force is applied to an object.
- You do work on an object only if the object moves.
Other Forms of Energy
- All forms of energy are measured in units called joules (J).
- Mechanical energy refers to total energy of an object, or group of objects due to large-scale motions and interactions.
- Sound energy is the energy that sound carries and is produced by vibrating objects.
- Sound energy cannot travel through a vacuum.
- Thermal energy is the sum of kinetic and potential energy of the particles in matter due to their random motion.
- Electric energy is the energy that an electric current carries.
- Electric appliances change electric energy into other forms of energy.
- Radiant energy is energy that is carried by electromagnetic waves.
- Electromagnetic waves (light waves, microwaves, and radio waves) can travel through a vacuum.
- Nuclear energy is energy that is stored in the nucleus of an atom.
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Description
Explore the concept of energy, its various forms like kinetic and potential, and the relationship between energy and work. Understand mechanical, thermal, electrical, radiant, and nuclear energy. Learn how energy is measured in joules and the conditions under which work is done on an object.
