March 31, 2014
We will review the six forms
of energy and finish
contraption demonstrations.
You will need:
*energy assignment
*sheet for notes
*pencil
Science:
Please take out your six forms of energy
assignment. You will also need a piece of
scratch paper and a pencil.
Anyone who has not presented their
contraptions, please get it now!
Here's why we need to review the
forms of energy...
Huh?
Some types of energy
must have made you feel
like this...
While others made
you feel like this...
But I want you to
feel like this...
March 31, 2014
Mechanical Energy
Simply put, it's the energy that moves objects.
Mechanical energy involves the conversion
between PE and KE. Hmm... haven't you been
showing examples of contraptions that do just
that??? Here are some other examples...
Sound Energy
Sound energy occurs when the particles that
make up a solid, liquid, or gas vibrate. Sound
actually travels in waves, but it must have
something to travel through.
It's easy to imagine
sound traveling through
the air, but who has
experienced a situation
Question
where you have
witnessed sound
traveling through a liquid
or solid?
March 31, 2014
Chemical Energy
This type of energy is not something you can really
see in action because it's a form of potential energy.
Chemical energy is stored energy, and certain things
have more or less chemical energy based on what
atoms make up the object or substance.
Here are some examples of items with stored chemical energy:
Now, of these examples, which do you expect to
have more potential to give energy?
Would some have more potential than others?
The items with the most potential to give energy
have the most chemical energy because of the
atoms that they are composed of.
March 31, 2014
Thermal Energy
(one of the most confusing types of energy)
Thermal energy is defined as the total amount
of energy from the movement of particles in
matter. Often times, thermal energy is confused
with temperature, but here's a way that you can
remember which things have more thermal (or
heat) energy.
Here's another example. If you had
an ice cube and wanted to melt it,
would it melt faster in a Dixie Cup of
warm water or a large bowl of warm
water?
The ice cube would melt faster in
the large bowl of water. There are
more water molecules giving energy
to the ice cube in a large bowl of
water!
Answer
March 31, 2014
Electromagnetic Energy
(another confusing type of energy)
The book's definition: a type of energy that is
transmitted through space in the form of
electromagnetic waves.
Well, what's an electromagnetic wave?
Electromagnetic waves are all around us. Most
of the waves that we come into contact with
every day are safe. They give us our television
and cell phone signals, allow radios to work,
heat up our food in microwaves, and . Others,
however, are higher frequency and more
dangerous. These include x-rays, UV rays, and
gamma rays.
March 31, 2014
Nuclear Energy
This type of energy is created from atoms
themselves, when they are joined or separated
under extreme conditions. Nuclear energy
occurs naturally in stars (fusion) and on Earth's
surface when atoms are split (fission). Let's
hear about it from Tim and Moby:
6 Forms of Energy - PE or KE?
March 31, 2014
Because several of these
energy types are confusing, you
will be given the option of
making corrections on the 6
Forms of Energy Assignment.
All assignments are due by
Friday.