2. Energy
Lets get something straight. All things have a
certain type of energy when moving. That’s a
fact. There are two types: Kinetic and Potential.
Potential Energy - The possible amount of force an object has. The
higher the object, the more potential energy it has.
Kinetic Energy - The amount of force an object in motion has. The faster
the object, the more kinetic energy it has.
3. Airplane Problem
(Question)
What do you think? When an airplane lands,
what dose an airplane’s kinetic and potential
energy do? Does it decrease, or increase? Or dose
one increase and the other decrease? Well?
4. Airplane Problem
(Ansewer)
The kinetic energy decreases. How, you ask? Well the rule for kinetic
energy is: The faster the object gose, the more kinetic energy it has. So
when the plane lands, it slows down, so the kinetic energy decreses.
The potential energy decreses, too. The rule for potential is: The higer the
object, the more potential energy it has. So when the plane lands, it gets
lower and the potential energy decreses too.
5. Chemical Properties
Each object has chemical properties.
Chemical Properties - Chemical reactions,
combustion, rusting, or burning/setting on fire.
Cannot be reversed.
6. Pyhical properties
Every object has many pyhical properties.
Pyhical properties - our five sences: smell, touch,
taste, sound, etc.
Can be reversed.
7. Heat Transfer
Some things give off heat, but how? How do we
feel heat without touching the cause? Or when
we feel heat WHEN the touch it. Also when we
are outside and the wind heats us up? Theese are
all ways off heat transfer.
8. Radiation
Radiation- heat waves passing by.
Examples: The sun’s rays warming your face. A
light bulb’s electricty passing through out its
wires. A kid sitting next to you sweaty body.
9. Conduction
Conduction- heat given by an object from
touching it.
Examples: A pot on a fire. A child touching a
stove. A pan from the oven.
10. Convection
Convection- the heat of moving wind or water.
Examples: Water in a pot boiling. The land
breeze on a beach blowing in your face. A cold
front following a warm front.
