Don’t Forget... Contestants

…Always phrase your answers in the form of a question!

Hands on your buzzers, its...

Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

What is a …? Colour My World`for $100 This is the distance from one place in a wave to the next similar place on the wave Y es NO

Back to Game Wavelength

Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

What is …? Colour My World for $200 Y es NO This is the wave height from the rest position of the wave to the crest or the wave depth from the rest position to the trough.

Amplitude Back to Game

Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

This is the mathematical formula which is used to determine the velocity of a particular wavelength of light. What is a …? Colour My World for $300 Y es NO

Good Answer! Back to Game Velocity = Frequency X Wavelength

Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

These are the six (6) main colours which comprise the visible component of the spectrum. What are …? Colour Mr World for $400 Y es NO

1- Red 2- Orange 3- Yellow 4- Green 5- Blue 6- Violet

Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

What are …? Colour My World for $500 Y es NO Based on the Additive Theory of Light, these are the three secondary colours.

Back to Game Magenta, Yellow and Cyan

Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

This is the entire range of wavelengths of light including the visible components What is the …? Light This for $100 Y es NO

Back to Game Electromagnetic Spectrum

Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

What are…? Light This for $200 Y es NO These carry more energy than visible light and therefore have a shorter wavelength and higher frequency than visible light

Ultra Violet Rays Back to Game

Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

What is the …? Light This for $300 Y es NO This model helps to explain how light behaves.

Wave Model of Light Back to Game

Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

What is the…? Light This for $400 Y es NO According to this,… coloured matter selectively absorbs different colours or wavelengths of light.

Subtractive Theory of Light Back to Game

Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

What is …? Light This for $500 Y es NO Some algae, jellyfish, insects, crustaceans, bacteria, earthworms, and fungi produce light by this method

Bioluminescence Back to Game

Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

What is a …? Only the Shadow Knows for $100 Y es NO This is an electroluminescent light source made out of a material called a semiconductor.

Back to Game Light-Emitting Diode (LED)

Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

Only the Shadow Knows for $400 Y es NO Drawing Question: Draw and label the following shadow created by a ray box light source

Ray Box Object

Back to Game Only the Shadow Knows for $400 Umbra Penumbra Ray Box Object

Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

What is …? Only the Shadow Knows for $300. Y es NO This occurs when light rays reflect off a rough or uneven surface and they do not remain parallel but are scattered in different directions.

Back to Game Diffuse Reflection

Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

What is…? Only the Shadow Knowsfor $400 Y es NO This is The Law of Refection

Back to Game When light reflects off a surface, the angle of incidence is always equal to the angle of reflection.

Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

What are…? Only the Shadow Knows for $500 Y es NO Drawing question: Draw a ray diagram which shows the final position of the image using a concave mirror

f

f Only the Shadow Knows for $500

Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

What is…? Mirror Image for $100 Y es NO This occurs when a object is placed at the focal point of a concave mirror.

f No Image

Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

What are…? Mirror Image for $200 Y es NO This is the kind of image produced using a concave mirror when the image is inside the focal point

f Virtual

Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

What are …? Mirror Image for $300 Y es NO These are practical examples of concave mirrors. Name two (2)

Back to Game Flashlights, telescopes, cosmetic mirrors and headlights

Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

What is the…? Mirror Image for $400 Y es NO These are the two formuli used to determine the magnification of an image

Back to Game Magnification =Image height = Image distance Object height Object distance

Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

Mirror Image for $500 Y es NO Drawing Question: Complete the following diagram for a convex mirror showing the final position of the image relative to the mirror.

f

f Virtual, smaller, upright

Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

What is …? Refraction Action for $100 Y es NO This is the formula used to determine the index of refraction for some unknown material.

Back to Game Index of Refraction = Speed of light in a vacum__ Speed of light in the material

Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

What is…? Refraction Action for $200 Y es NO This is Snell’s Law

Back to Game

Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

What is…? Refraction Action for $300 Y es NO This occurs when light reflects completely off the inside wall of a denser medium (higher index of refraction) rather than passing through the wall into a less dense medium (lower index of refraction).

Total Internal Refection Back to Game

Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

What is…? Refraction Action for $400 Y es NO This type of lens causes the converging effect of the light

Convex lens Back to Game

Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

Refraction Action for $500 Y es NO Drawing question: Complete the following image.

f f Refraction Action for $500

f f

FINAL JEOPARDY A converging lens is placed 12 cm from a wall chart. The focal length of the lens is 15 cm. What will the image look like??

ff Larger, upright and virtual

1 = f di do 1 = di 12 4 = di = 1 60 di di = -60 cm Solution