Energy Aboard Ship

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Energy Aboard Ship
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What is Energy?

• This module will emphasize the transformation of
  energy into useful forms.

Find out more about energy.
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Matter and Energy
Matter takes up space. Matter can also be
changed into energy.
Hear Einstein explain matter and
energy in his own words.
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Matter and Energy

• Energy is the ability to do work.

Force x Distance Work
Read an online book about energy.
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Kinetic vs. Potential

• Potential energy is stored energy.
• Kinetic energy involves motion.

Learn about the different forms and sources of
energy.
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Potential Energy

• Consider a roller coaster.

At the top, it has potential energy. The energy
is stored just as the energy in the rubber band.
It is energy waiting to be used for motion.
Check out the animated roller coaster.
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Kinetic Energy

• As the roller coaster moves toward the bottom,
  kinetic energy increases along with the roller
  coasters speed.

Try building your own roller coaster.
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The Transformation of Energy

• Energy is conserved.

Conservation of energy means it can change forms
between kinetic and potential, but it never
disappears.The total amount of energy is always
the same.
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Energy Aboard Ship

• How many different kinds of energy can you find
  on a ship?

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Steam Engines Transform Energy

• Potential energy is stored in fuel.
• Chemical change produces heat energy.
• Heat changes water to steam.
• Steam provides mechanical energy.

Learn more about how a steam engine works.
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Steam Engines Transform Energy

• Mechanical energy moves the ship.
• A moving ship has kinetic energy.

See an animated steam engine.
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The Steam Engine

• Steam turns large turbines.
• Turbines turn a series of gears.
• The gears reduce the turning speed of the shaft.

Visit a virtual engine room.
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Potential to Kinetic
Potential Energy (fuel)
Heat Energy (steam)
Mechanical Energy (engine parts)
Kinetic Energy (ship moves)
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Speed in Knots

• A knot refers to the number of nautical miles
  covered in one hour. Many years ago, sailors
  would throw a log with a knotted rope attached
  over the side of the ship.

To calculate speed in knots, a sailor would
simply count the number of knots that passed by
as the line to the log was let out.
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Speedy Transformations

• Starting and stopping a plane on the short deck
  of a ship means a fast conversion between kinetic
  energy and potential energy!
• This is accomplished with a catapult.

Build a catapult to launch a
balso wood glider plane.
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Fuel for People

• The people on a ship also need energy. Food
  provides fuel for people.
• A galley is a ships kitchen.

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Transferring Heat Energy

• Heat energy raises the temperature of matter. It
  makes it hotter. The atoms move faster.

Heat moves from warmer matter to cooler matter.
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Heat TransferConduction
Conduction is a way of transferring heat through
the contact of objects.
Try an interactive lesson on heat transfer.
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Heat TransferConvection
Convection is heat transfer through a fluid with
the hotter molecules rising and the cooler ones
sinking.
Try an interactive lesson on heat transfer.
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Heat TransferRadiation
Radiation is heat transfer through space. The
earth is heated by radiation from the sun.
Try an interactive lesson on heat transfer.
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Energy from Food

• Food is fuel that gives us energy.

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Energy in Food

• A calorie is a measure of the amount of energy.
  In food, energy is measured in thousands of
  calories or kilocalories.

Learn more about Measuring Calories.
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Transferring Energy in Food

• Food is digested and stored in our bodies as
  potential energy.
• This potential energy can be transformed into
  kinetic energy as our bodies move and exercise.

When you exercise, you get hot? What do you
think is happening?
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The Sun is a Source of Energy

• The suns energy becomes chemical energy and
  is stored in plants as potential energy.

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Energy in Food

• Find out how many calories are stored in a peanut
  with this simple science experiment.

Go to the peanut experiment.
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Burning Calories

• How many calories do you use when you are doing
  various activities?

• Use the following spreadsheet activity to find
  out.

Try the spreadsheet activity.
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Questions

• Learning through inquiry. The last portion of
  this module contains questions about energy.

How can...
What if...
Why...
When does...
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Electric Generators

• The electric generators are similar to the steam
  engines because they both transform energy into a
  useful form.

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Steam to Run a Ship

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Nuclear Energy

• Be a virtual tourist and explore nuclear energy
  and power.

Explore nuclear energy.
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History of Electricity

• Benjamin Franklin Kite Experiment

Read more about Franklins experiments.
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History of Electricity

• Benjamin Franklin Kite Experiment
• Thomas Edison Light Bulb

Read more and see pictures of Edisons bulbs.
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History of Electricity

• Benjamin Franklin Kite Experiment
• Thomas Edison Light Bulb
• George Westinghouse
• Nikola Tesla

Alternating Current
Click on this slide to learn more.
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Speed of Electricity
Electrons moving in a wire are different from the
electricity flowing through a wire.

• The electrons themselves move very slowly.
• The electricity moves nearly as fast as light.

Read answers to How fast..?
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Ships Engines
Take a virtual tour of an engine room.
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Fuel

• Bunker Oil
• Aviation Gasoline

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Electrical Energy Transfer

• When is water and electricity dangerous?
• Pure water does not conduct electricity.
• Our bodies are mostly water.
• Impurities like salt make water more
• conductive.
• Our bodies contain salt.

Do we conduct electricity?
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Water and Electricity

• Perform a simple experiment to see water conduct
  electricity.

Download instructions for experiment.
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Energy Use

• How much is a kilowatt?
• How much energy does your family use?

View an activity to learn more about energy use
and conservation.
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Energy Use

• Research electrical plants in your area.
• Find out more about your community.
• Where do you get your electricity?
• What kinds of energy sources are used?
• How much energy does your community use?

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Energy Matters

• Just as there are many kinds of
• energy and energy uses on a ship,
• you use many kinds of energy every
• day.
• List different kinds of energy you see around
  you.
• Will we ever run out of energy?
• What can you do to conserve energy?