forms of energy chapter 5 energy and energy resources lesson 1 mr. nigh science 7
TRANSCRIPT
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Forms of Energy
Chapter 5Energy and
Energy Resources
Lesson 1
Mr. NighScience 7
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Energy
Energy is the ability to cause change
All the activitiestaking place inthis picturerequire energy
EnergyHasMany Forms
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Kinetic EnergyThe energy due to motion
Kinetic Energy increases as mass
increases
Kinetic Energy increases as speed
increases
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Potential Energy-Stored Energy
Theenergy
of Position
Or Chemical
composition
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Gravitational Potential Energy
• Gravitational Potential Energy increases when weights are held overhead
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Elastic Potential Energy
• The rubber bands elastic potential energy increases when you stretch the rubber band. Or compress a spring
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Chemical Potential Energy
• Chemical potential energy is energy stored in the chemical bonds between atoms. It is released when chemical reactions take place.
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Work
Work is the transfer of energy that occurs when force is applied over a distance.
ThisIs
Work
Not Work
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Forms of Energy
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Mechanical Energy
The energy that
moves objects
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Sound Energy
Sound results from the vibration
of particles in solids, liquids, and
gasses***Since sound
needs tooriginate from
particles in the air
vibrating, it cannot travel
through
Empty Space
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Thermal EnergyThe total amount of energy from
the movement of particles that make-up objects
Always moves from warmer to colder
objects
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Electric Energy• When you turn on a fan, electric current runs
through the motor. Electric energy is the energy that an electrical current carries.
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Radiant Energy
Energy transmitted through space in the form of electromagnetic waves
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Nuclear EnergyThe center of an atom-the nucleus is
where nuclear energy is stored. When a heavy atom breaks apart
(fission) or when two small atoms join together (fusion) energy is
released
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The Sun a controlled
fusion reaction due to vast amounts of heavy
elements
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Chemical EnergyEnergy that is stored
in the chemical composition of matter
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Study Questions1. Which type of energy increases when
you compress a spring?2. Which type of energy increases when
you lift a large box? 3. What is the energy of motion?4. What form of energy is due to the motion
of particles?5. What form of energy can travel through
space?6. What form of energy is stored in the
nucleus of an atom?