energy what is energy?. energy is the ability to do work or cause change
TRANSCRIPT
Energy
What is energy?
What is energy?
What is energy?Energy is the ability to do
work or cause change.
What is energy?Energy is the ability to do
work or cause change.Work = Force * distance
What is energy?Energy is the ability to do
work or cause change.Work = Force * distanceForce = Mass * Acceleration
What is energy?Energy is the ability to do
work or cause change.The total amount of energy
in the universe doesn’t change and has always been here.
What is energy?Energy is the ability to do
work or cause change.The total amount of energy
in the universe doesn’t change and has always been here.–1st Law of Thermodynamics
What forms does energy come in?
What forms does energy come in?
Kinetic energy:
What forms does energy come in?
Kinetic energy: The energy an object has due to its motion.
What forms does energy come in?
Kinetic energy: The energy an object has due to its motion.– The kinetic energy of an object is due to
both its mass and velocity.
What forms does energy come in?
Kinetic energy: The energy an object has due to its motion.– The kinetic energy of an object is due to
both its mass and velocity.– Kinetic energy = ½ X mass X velocity
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What forms does energy come in?
– Potential energy:
What forms does energy come in?
– Potential energy: Stored energy that results from the position or shape of an object.
What forms does energy come in?
– Potential energy: Stored energy that results from the position or shape of an object.
Gravitational potential energy:
What forms does energy come in?
– Potential energy: Stored energy that results from the position or shape of an object.
Gravitational potential energy: Potential energy related to an object’s height.
What forms does energy come in?
– Potential energy: Stored energy that results from the position or shape of an object.
Gravitational potential energy: Potential energy related to an object’s height.
– Gravitational potential energy = weight X height
Question? Who has more gravitational potential
energy?– Skier A has a mass of 50 kg and a height
of 5m.– Skier B has a mass of 60 kg and a height
of 4m.
Question? Who has more gravitational potential
energy?– Skier A has a mass of 50 kg and a height
of 5m. GPE = 50X5 = 250 J– Skier B has a mass of 60 kg and a height
of 4m. GPE = 60X4 = 240 J
What forms does energy come in?
– Potential energy: Stored energy that results from the position or shape of an object.
Gravitational potential energy: Potential energy related to an object’s height.
– Gravitational potential energy = weight X height
Elastic potential energy: The potential energy of objects that can be stretched or compressed.
What are some types of energy?
What are some types of energy?
What are some types of energy?
Electromagnetic Thermal Sound Mechanical Electrical Nuclear Chemical
What are some types of energy?
Electromagnetic: Energy that is caused by the acceleration of charged particles.
What are some types of energy?
Electromagnetic: Energy that is caused by the acceleration of charged particles.
Thermal: The total of all potential and kinetic energy of a particle.
What are some types of energy?
What are some types of energy?
Electromagnetic: Energy that is caused by the acceleration of charged particles.
Thermal: The total of the potential and kinetic energy of the particles in an object.
Sound: The energy produced by an object’s vibration.
What are some types of energy?
Mechanical: The form of energy that is associated with the position and motion of an object.
What are some types of energy?
What are some types of energy?
Mechanical: The form of energy that is associated with the position and motion of an object.
Electrical: The energy of electrical charges and can be potential or kinetic.
What are some types of energy?
What are some types of energy?
Nuclear: A type of potential energy that is stored in the nucleus of an atom.
What are some types of energy?
Nuclear: A type of potential energy that is stored in the nucleus of an atom.– Nuclear fission: The splitting of nucleus.
What are some types of energy?
Nuclear: A type of potential energy that is stored in the nucleus of an atom.– Nuclear fission: The splitting of nucleus.– Nuclear fusion: The fusing of two
separate nuclei into one nucleus.
What are some types of energy?
Nuclear: A type of potential energy that is stored in the nucleus of an atom.– Nuclear fission: The splitting of nucleus.– Nuclear fusion: The fusing of two separate
nuclei into one nucleus. Chemical: Potential energy that is
stored in the chemical bonds that hold chemical compounds together.
Can energy change from one type to another?
Can energy change from one type to another?
ABSOLUTELY
Nuclear
Electromagnetic
Chemical
Mechanical (movement)thermal (body temp.)Electrical (brain)