SCIENCE ENERGY and MOTION. All the lights in your house need energy. So do the refrigerator and washing machine and computer. What else needs energy?. What do you and a car have in common? You both need energy! Gasoline is the car’s source of energy.
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What else needs energy?
You both need energy!
Gasoline is the car’s source of energy.
Food is your form of energy. Healthy foods give your body the energy it needs.
EVERYTHING THAT MOVES HAS ENERGY!
They get their energy from eating healthy foods.
a hill, it seems to stop at the top
for just a moment.
Then it speeds down to the bottom.
KINETIC ENERGY is ENERGY in MOTION.
POTENTIAL ENERGY is the energy something has because of its position or condition.
is the total
of an object.
pogo stick spring down.
The spring has
When the spring spreads
out, the pogo stick
goes up and now has
climbs to the top of a
hill, it gains POTENTIAL ENERGY.
The higher the coaster
climbs, the more
the cars have.
down the hill, the
of the changes in
POTENTIAL ENERGY + KINETIC ENERGY
You see lightning flash across the
sky. Then you hear a boom that
is so loud, it makes your heart pound.
Lightning and Thunder are two
Forms of Energy.
surface of the sun. It makes the
air around it rapidly expand. This
causes the BOOM of thunder.
How far away was that lightning strike?
As soon as you see a flash of lightning,
count the seconds until you hear
thunder. Then divide the number of
seconds by 5. This gives you an
approximate distance in miles.
is produced and used in
Light is a form of energy
that can travel through
Plants use light from the
sun to make food.
from the sun allows us to see.
Another source of LIGHT ENERGY
is electricity. If we couldn’t use
electricity to produce
LIGHT ENERGY it would be difficult
to work or play after dark.
Sound is made when something
moves back and forth. This motion
describes how high or low
a sound is.
LOUD sounds have more energy
than quiet sounds.
You could not do without energy for even one day.
is energy that is released by a
is energy that comes from electric
from the food we eat gives us the energy we need to grow and move.
Most cars run on gasoline.
Gasoline is a source of
Fire releases chemical energy that
provides heat and cooks our food.
is energy that comes from electric
Anything plugged into a wall outlet
uses electrical energy.
Electricity is generated using the chemical
energy released during the burning of
The sun, wind, and water can also
Electrical energy changes to light energy
when you turn on a light switch.
You feel heat energy given off by
many light bulbs.
Chemical energy in gasoline changes
to mechanical energy when a driver
presses the gas pedal.
energy in a glow stick.
Glow sticks have a glass tube
inside that has chemicals inside.
When you bend the glow stick, the
tube breaks. The chemicals mix
together and when they mix, light
energy is given off.
A remote control sends radio waves
to a remote-controlled car.
The radio waves change to electrical
energy to tell the motor
what to do:
start – stop – go faster.
The car also has batteries to change
chemical energy to electrical energy
to move the car.
Energy is the ability to cause change in matter.
Everything that moves has energy.
Kinetic energy is energy of motion.
Potential energy is the energy something
has because of its position.
Mechanical energy is the sum of kinetic energy
and potential energy.
Light energy allows plants to make food and
helps us see and stay warm.
Sound energy is caused by vibrations.
Energy can change from one form to another.
A dam can be
of falling water
People have always used water’s energy to move things. Before boats had engines, ferries and rafts used the motion of rivers to carry people and goods from place to place.
4. The water then flows back into the river.
Wind mills, like water mills,
have been used for hundreds of
years. They move because of
Wind energy is energy produced
by moving air.
Today, windmills are used to
The wind’s kinetic energy causes the
turbine’s blades to move.
The generator changes this energy
of motion into electrical energy.
electrical energy to power our
Wind and Water are clean
They do not hurt our environment
and they are both renewable
used by kites,
gliders and birds
as they fly.
wind energy to
sail the seas.
One day we will run out of fossil
fuels like coal, petroleum, and
If we want to continue using
electricity, we must find ways to
use other sources of energy.
When they are gone, they’re gone.
Water and wind are renewable
sources of energy.
Biofuels, which are made from living
things, are renewable resources
source of energy.
Windmills and water energy
are also renewable.
This car has a tank filled with hydrogen
instead of gasoline.
The hydrogen goes to a fuel cell, where the
Hydrogen mixes with oxygen to produce electricity.
Wind and water are two important
sources of renewable energy. People
have long used water’s energy to move
people and things. Windmills were often
used to grind grain.
Today, we use wind energy and water
energy to drive generators.
The generators change mechanical
energy into electrical energy.