energy
Download
Skip this Video
Download Presentation
Energy

Loading in 2 Seconds...

play fullscreen
1 / 73

Energy - PowerPoint PPT Presentation


  • 75 Views
  • Uploaded on

Energy. The balloon was filled with Hydrogen . Along with Oxygen, the contents of the balloon combined to form water . The energy stored in the balloon is ALL chemical What forms of energy did this transform into? Heat , Mechanical, Radiant, Sound. L.o.C.o.E.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Energy' - trixie


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
energy

Energy

The balloon was filled with Hydrogen .

Along with Oxygen, the contents of the balloon combined to form water.

The energy stored in the balloon is ALL chemical

What forms of energy did this transform into?

Heat , Mechanical, Radiant, Sound

l o c o e
L.o.C.o.E.

The amount of energy we started with is

more than

equal to

less than

the amount we ended with.

l o c o e1
L.o.C.o.E
  • Energy cannot be Created!
  • Energy cannot be Destroyed!
  • Energy can ONLY be Transformed!
  • This simple set of statements is called the Law of Conservation of Energy.
  • When any energy is transformed, heatis always released.
the basics
THE BASICS:
  • Energy can be measured with two basic units: Caloriesand Joules
  • Energy can be found in two (2)different TYPES!
  • POTENTIAL ENERGY: stored
  • KINETIC ENERGY: moving
the basics1
THE BASICS:
  • Energy is found in 7different FORMS!
  • Most energy forms can be found as both types.
  • Some cannot be stored by themselves, only transformed into from other forms.
chemical energy1
CHEMICAL ENERGY:
  • Chemical energy is stored in chemical bonds
  • Plants use a process called photosynthesisto store the sun’s energy as sugars in fruits and roots.
  • CO2 + Water + ENERGY→ Sugar + Oxygen gas
  • The plant takes in the raw materials of CO2and waterand then uses the sun’s radiant energy to “glue” them together.
chemical energy2
CHEMICAL ENERGY:
  • Chemical energy is used when bondsare broken.
  • We eat the sugar and use the energy to make chemicals that we need to live. This is called respiration

Sugar + Oxygen gas → CO2 + Water + ENERGY

  • The amount of Calories in our food can be determined by burning the food in a calorimeter
heat energy1
HEAT ENERGY:
  • Heat occurs whenever particles collide
  • Two things happen when heat is added to particles speed upand spread out
  • The average speed of particles is called temperature
heat energy2
HEAT ENERGY:
  • Heat ALWAYS travels from HOTto COLD until temperatures are the same.
  • “Cold” refers to something that has less heatthan something else.
  • When something gets “cold”, heat is being removed
heat energy3
HEAT ENERGY:
  • Conduction- direct contact with temperature differences
  • Convection- circulation within a fluid (liquids and gases )
  • Radiation- an electromagnetic wave called INFRARED.
electrical energy1
ELECTRICAL ENERGY:
  • Electricity is usually stored as chemical energy.
  • One chemical gives electrons; the other takes electrons.
  • Static electricity can occur when there is a buildup of electrons.
  • Opposite charges attract
  • Like charges repel
electrical energy2
ELECTRICAL ENERGY:
  • The balloon has been rubbed on your hair. Draw the charges you would find on the balloon and the wall.

Wall

electrical energy3
ELECTRICAL ENERGY:
  • Two balloons have been rubbed on your head. Draw their interaction in the space below.
electrical energy4
ELECTRICAL ENERGY:
  • You place your hand on the Van de Graaf generator. Draw your hair AND the charges you would predict.
electrical energy5
ELECTRICAL ENERGY:
  • Electricity refers to the flow of electrons
  • A circuit must be closed (completed) for electrons to flow.
  • There are two types of circuits

series and parallel

electrical energy6
ELECTRICAL ENERGY:
  • SERIES CIRCUIT
    • Shares the voltage
    • Adding a light makes all of them dimmer
    • One goes out…they all go out
electrical energy7
ELECTRICAL ENERGY:
  • PARALLEL CIRCUIT
    • All receive maximum voltage
    • Adding a light changes nothing
    • One goes out…the rest stay on
electrical energy8
ELECTRICAL ENERGY:
  • Voltage (Volts): electrical pressure (the umpf behind the electrons)

Amperage (Amps): the frequency of electrons

mechanical energy1
MECHANICAL ENERGY:
  • Also called gravitational potential energy:

P.E. = mgh

P.E. = mass X gravity X height

kg m/s2 m

mechanical energy2
MECHANICAL ENERGY:
  • Kinetic Energy – The energy of motion

K.E. = ½ mv2

K.E. = ½mass X velocity2

kg m/s

nuclear energy2
NUCLEAR ENERGY:

Nuclear energy holds the nucleus together. It would love to fly apart!

nuclear energy3
NUCLEAR ENERGY:

Nuclear fission is when the

nucleus of large atoms is split.

radiant energy1
RADIANT ENERGY:
  • What is light? An electromagnetic wave
radiant energy2
RADIANT ENERGY:

Light is produced when a charged particle is vibrated.

radiant energy3
RADIANT ENERGY:

EM waves travel at the “speed of light” which is… 300,000,000 m/s or

300 thousand km/s

radiant energy4
RADIANT ENERGY:

What is a wavelength?

radiant energy5
RADIANT ENERGY:

Which wavelengths have the most / least energy?

  • Name some types of light in the spaces below.
radiant energy6
RADIANT ENERGY:

What wavelengths of light CAN been seen by humans?

sound energy1
SOUND ENERGY:
  • Sound is a wave of matter
sound energy2
SOUND ENERGY:
  • Sound cannot travel through a vacuum.
  • Sound travels slowest through a GAS, fastest through a SOLID.
sound energy3
SOUND ENERGY:
  • What is frequency?
    • The number of wavelengths that pass by a point in one second.
    • Measured in Hertz
  • What is pitch?
    • Refers to how high or low a tone is
sound energy4
SOUND ENERGY:
  • Doppler Effect:
ad