Behaviour of Light On Different Materials and Surfaces

Behaviour of Light On Different Materials and Surfaces

Lab time! - Take the next 15 minutes to fill out the Behaviour of Light on Different Materials & Surfaces prelab You should do this independently! Once completed, turn to the next page and make predictions - - AFTER you have made predictions, your teacher will pass out the various materials - - HOW WILL LIGHT BEHAVE WHEN A FLASHLIGHT IS SHONE ON THE MATERIALS? SHINE A FLASHLIGHT ON THEM, AND RECORD YOUR RESULTS Complete all questions on your sheet!

Have you handed your labs in? ! GOOD! NOW LET’S DISCUSS WHAT HAPPENED!

Reflection - What happens to light when it is reflected? What colour of tee shirt would you want to wear on a hot day? What happens when you look at a green plant?

Absorption - What happens to the light during absorption? What colour absorbs ALL light? What colour absorbs NO light? What happens to white sunlight when it hits a red stop sign?

Transmission - What happens to the light during transmission? Is it always 100% transmitted? What are some examples of partial transmission of light?

Refraction - - What is refraction? WHY does the light bend? - DENSITY! - The light changes speed Watch the following video discussion the refraction of sunlight! https: //www. brainpop. com/science/energy/rainbows/

TRANSPARENT - All light goes through - Examples - Glass - Bubbles - Clean, clear water - Magnifying Glass

TRANSLUCENT - Only SOME light goes through - Examples - Stained glass - Tinted windows - Sunglasses

OPAQUE - NO light goes through - Example - Apple - Wall - Table - Couch