Please enable JavaScript.
Coggle requires JavaScript to display documents.
SCIENCE ENERGY (TYPES OF ENERGY (POTENTIAL ENERGY- energy that can be…
SCIENCE ENERGY
TYPES OF ENERGY
KINETIC
is the energy of movement. Anything that moves has kinetic energy. The faster an object moves the more kinetic energy it has.
HEAT
Can come from the sun, light globes, chemical reactions, flames, electrical devices or even from people and animals
LIGHT
Comes from the sun, light globes, and animals such as glow-worms (anything that provides humans and animals to be able to see)
-
ELECTRICAL ENERGY
Is produced by power stations running through wires to get to your house to make your food, turn lights on ect..
-
THE EYE
The eye is made up of a convex lense that forms an image we see
The convex lens directs the light to the retina (at the back of the eye) where the optic nerve is located.
If the light is focused either before or after the retina, then the image will be blurry when looking at things close by or far away.
If your eye ball is too long then the light is focused before the retina. this is called short sightedness or myopia.
If the eyeball is too short then light if focused behind the retina. this is called long sightedness or hyperopia.
CONDUCTION, CONVECTION, RADIATION - heat energy can be transferred through these three ways:
CONDUCTION-
This happens between two objects that are in contact. Heat transfers from the hotter object into the cooler one (until they both become the same temperature
CONVECTION
Heat can flow through liquids and gases in the process known as convection. Convection causes heat to rise, making it hotter near the roof than the floor. As the air cools it sinks down to the bottom
RADIATION
Heat radiates or spreads out wards from any hot objects. This is known as radiation. Radiant heat is transferred as a wave that can travel even through the vacuum in space. Radiation can be easily blocked.
-
SOURCES OF SOUND
REFLECTION- for a sound to be produced an object must be vibrating. As sound travels through material, the particles of that material vibrate. When the sound wave hits a solid/liquid surface (e.g. brick wall, water) it will reflect
ABSORBITION- When a sound wave hits a soft object (e.g. curtain, cloth) some of the kinetic energy is absorbed.
DEFFUSION- Sometimes it'll hit a rough object. This shatters the sound wave and spreads out its energy in many different directions.
FREQUENCY- measured in hertz (Hz), a higher pitch sound has a higher frequency then lower, dep pitch sounds
Sound travels at about 340m/s through air. This is why it takes several seconds to hear the thunder (the sound of lightning) The speed that sound travels at also depends on the material the sound travels through. The more closely the particles of the material are packed together, the faster a sound will travel through it.
-
-
-
-
ENERGY TRANSFORMATIONS- energy can be transferred from one object to another. it can also be transformed (changed) from one type of energy into another type of energy
-
ENERGY EFFICIENCY
ENERGY EFFICIENCY IS VERY IMPORTANT WHEN IT COMES TO HOUSE DESIGNS
The purpose of energy efficiency in a house is to reduce the running cost
The original house was made up of one room with one heating source
-