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HEAT AND LIGHT
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Match the names of doraemon's friends with all of us
Nobita=Jorge, Suneo=Sergio, Gigante=Héctor, Shizuka Nerea, Doraemon Pepo, Dorami Mara
Refraction causes light to
bend as passes through a different medium.
Refection causes light to
change direction when it hits a surface.
Light is made up of ...
all the colors combined together.
Refraction occurs when...
light passes from one medium to another and the light energy changes direction.
Refelction occurs when...
light energy bounces off a surfaces and changes direction.
the basic laws of light:
1.- light travels in straight lines, 2.- light can be reflected, 3.- light can be refracted.
Name artificial sourcers
light bulbs, computer screen, torches.....
Nane a natural source of light
The sun
What is light?
It's a form or radiant energythrat we can see with our eyes and is transferred thorugh radiation.
What is a conductor material?
A m aterial that transfers heat easily.
What is a insulator materials?
A materials that doesn't transfer heat easily.
Expansion ocurrs
when thermal energy causes the molecules vibrate
The process when a solid is heated and it changes into a liquid is called
Melting
The process when a gas cools down and it changes into a liquid is called
Condensation
The process when a liquid cools down and it changes into a solid is called
Solidification
The process when a liquid is heated and it changes into a gas is called
Evaporation
What happens when a solid is heated?
It changes into a liquid. (Melting)
What happens when a liquid is heated?
It changes into a gas.(Evaporation)
What happens when a gas cools down?
It changes into a liquid. (Condensation)
Heat can cuases changes such as:
changes in state, expansion and chemical changes.
Radiation ocurrs when
heat is transferred through empty space by electromagnetics waves.
Convections ocurrs when...
heats travel through a gas or through a liquid (motion of molecules from the bottom to the top)
Conduction ocurrs when...
the heat is transferred when two objects are in contact.
Heat travels from the colder object to the hotter objet or heat travels from the hotter object to the colder obect?
Heat travels from the hotter object to the colder obeject.
What is temperature?
Temperature is the amount of thermal energy in an object.
What is heat?
Heat is the transfer of thermal energy.
What is the difference between temeperature and heat?
Temperature is the amount of thermal energy in an object adn heat is the transfer of thermal energy.
What is thermal energy?
Thermal energy is a form of energy that is transmitted as heat.


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