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Light and heta

ainhoamariasg

Created on April 4, 2018

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Transcript

LIGHT AND HEAT

Unit 5: Back to the future

“Light is a form of energy that allows us to see everything around”

Important things about light

It can come from different sources:- Natural sources : Sun, fire... - Man made sorurces: Candles, lasers...

The light is compound by particles called PHOTONS

The light travels at 300,000 km/sIt travels like a line and waves It travels in all directions

Light and objects

Transparent

Translucent

Opaque

Ligth cannot pass and they have a shadow

Light passes and you can see the other side

Only some light can pass and the other side is blurry

Reflection

Refraction

Colors and light

Why is light related with colors? Why is better wearing white than black clothes in summer?

"Heat is produce with thermal energy" "It is the transference of thermal energy from a hot thing to a cold thing"

Heat and particles

The TEMPERATURE measures how fast are those particles moving