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Forms of Energy and Energy Transformation

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L K

on 8 November 2013

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Transcript of Forms of Energy and Energy Transformation

Biomass, Water (hydropower), Geothermal, Wind, Solar
Forms of Energy and Energy Transformation
Learning Target #1:
Define energy
Define potential energy. Two types of potential energy are Stored Mechanical Potential energy and Gravitational Potential energy. Define both of these then give one example of Stored Mechanical Potential energy and Gravitational Potential energy.
Learning Target #2:
Learning Target #3:
Define Kinetic Energy. Give 2 examples of an object or substance with kinetic energy.
Learning Target #4:
Give two examples where potential energy is changing into kinetic energy.
Learning Target #5:
Define each form of energy (Chemical Energy, Radiant Energy, Thermal Energy, Electrical Energy, Sound Energy, Nuclear Energy) and give 1 example of each.
For Nuclear Energy, define the process of fission and fusion.
Determine which forms of energy are kinetic energies and which are potential energies (Chemical Energy, Radiant Energy, Thermal Energy, Electrical Energy, Sound Energy, Nuclear Energy).

Define the Law of Conservation of Energy.
Learning Target #6:
Learning Target #7:
Give at least 5 different examples of energy changing from one form to another.
Learning Target#8:
Define renewable and nonrenewable resources. Give examples of renewable and nonrenewable sources of energies. Give one benefit and one consequence that each may have on Society.
"Energy Is the Ability to Do Work."
POTENTIAL ENERGY:
Potential energy is
stored energy and the energy of position
–gravitational energy. There are several forms of potential energy Ex. Stored Mechanical
& Gravitational
Stored Mechanical:
Gravitational:
Stored Mechanical Energy is
energy stored in objects
by the application of a force.
Compressed springs and stretched rubber bands
are examples of stored mechanical energy.
Energy an object or substance has because of it's position
, anything "up high". For example a
rock resting at the top of a hill
contains gravitational potential energy.
Compressed spring
Rock in high altitudes
KINETIC ENERGY:
Energy of motion.
Forms :
~ Motion
~ Electrical
~ Sound
~ Radiant
~ Thermal
Examples:
Lightning
Electrical Energy
Airplane Flying
Mechanical Energy
Gasoline in container and gasoline burning
stretched rubber band and released rubber band
Gasoline in a container
Potential energy
Spilled out gasoline burning
Kinetic energy
From potential to kinetic
Stretched rubber band
Released rubber band
Potential energy
Kinetic energy
When the rubber band is released its energy changes from potential to kinetic
Name
Definition
Example
& &
= Potential energy
= Kinetic energy
Key for
Chemical energy Radiant energy Thermal energy Electrical energy Sound Energy Nuclear energy
Is energy stored in the bonds of atoms and molecules
Is electrom-
agnetic energy that travels in transverse waves
Thermal energy or heat, is the vibration and movement of the atoms and molecules within substances
Is delivered by tiny charged particles called electrons, typically moving through a wire
Is the movement of energy through substances in longitudinal (compression/rarefaction) waves
Is energy stored in the nucleus of an atom — the energy that holds the nucleus together
Fusion:
The sun combines the nuclei of hydrogen atoms
Fission:
Nuclear power plants split the nuclei of uranium atoms
Batteries
Visible light
Cup of hot tea
Lightning
Capping
Sun
Fusion
"Energy is neither created nor destroyed"
Meaning when we use energy it never disappears, we just change/transform it into another kind of energy.
Burning candle
chemical energy
Heat
Light
Light
heat
sound
electrical energy
Laptop
Sand clock
Gravitational energy
Kinetic
Opening blinds
Mechanical energy
Gravitational
Arrow shot from cross bow
Mechanical energy
Kinetic
Renewable
Nonrenewable
Definition:
Definition:
Examples:
Examples:
Benefit:
Benefit:
Consequence:
Consequence:
Energy sources that can be replenished (made again) naturally
Energy sources that cannot be replenished in a short period of time.
Oil and petroleum products, Natural gas, Coal, Uranium
Does not directly emit greenhouse gases
It is more expensive way of getting energy than fossil fuels
Cheaper than renewable energy sources
Produces greenhouse gases and pollution
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