INTERACTIONS OF LIGHT MATTER CAN INTERACT WITH LIGHT

INTERACTIONS OF LIGHT

MATTER CAN INTERACT WITH LIGHT IN 3 WAYS Matter can transmit light Remember light can travel through empty space, when it meets a material, it can be transmitted through it Matter that transmits light is called transparent Material that transmit light, but don't let it travel straight through are called translucent

This Photo by Unknown author is licensed under CC BY-SA. TRANSLUCENT VS TRANSPARENT

MATTER CAN INTERACT WITH LIGHT IN 3 WAYS Matter Can Absorb Light When light enters a material but does not leave it, the light has been absorbed Matter that does not let any light pass through it is called opaque Absorption is the transfer of light energy to matter

This Photo by Unknown author is licensed under CC BY-SA. WHICH IS OPAQUE?

MATTER CAN INTERACT WITH LIGHT IN 3 WAYS Matter Can Reflect Light Most objects do not give off light, instead light bounces off it The bouncing of light off a surface is called reflection When light bounces off a smooth or shiny surface, it reflects in a uniform way, producing an image

REVIEW: How many ways can light interact with matter?

REVIEW: What is it called when light bounces off a surface?

REVIEW: If something doesn't allow any light to pass through it, what is it called?

REVIEW: What is matter called if it allows light to pass straight through it?

REVIEW: What is it called when light energy transfers to matter?

REVIEW: What is it called when material transmits some light but doesn't let it travel straight through?

DIFFERENT FACTORS IMPACT THE COLOR OF OBJECTS

COLOR IS DETERMINED BY THE LIGHT REFLECTED OR ABSORBED (OBAQUEby. OBJECTS) Color is determined the colors of light reflected by the object An object that appears white reflects every color An object that appears black absorbs every color

TRANSPARENT AND TRANSLUCENT OBJECTS ARE DIFFERENT Color is determined by the colors of light that pass through the object Ex: Green bottle is green because it transmits green (allows it to pass through) while absorbing the other colors This Photo by Unknown author is licensed under CC BY-NC.

WHAT COLOR IS BEING REFLECTED? This Photo by Unknown author is licensed under CC BY-SA.

WHAT COLOR IS BEING REFLECTED? This Photo by Unknown author is licensed under CC BY-SA.

WHAT COLOR IS BEING REFLECTED?

WHAT COLOR IS BEING TRANSMITTED? This Photo by Unknown author is licensed under CC BY-SA.

REFRACTION Refrection is a change in direction as a wave passes from one medium to anoter Refraction is due This Photo by Unknown author is licensed under CC BY-SA. to a change in wave speed

This Photo by Unknown author is licensed under CC BY-SA.

This Photo by Unknown author is licensed under CC BY-SA.