NGSS 1.Waves: Light and Sound 1-PS4-1, 1-PS4-3, 1-PS4-4 (for more on 1-PS4-1 see Sound)
Core Disciplinary Ideas: PS4.A Wave Properties; PS4.B Electromagnetic Radiation; PS4.C Information Technologies and Instrumentation
Mechanics, Waves & Energy: Light Learn about the fundamentals of light: lenses, reflection, refraction, microscopes, telescopes, cameras, and the speed limit of the universe.
Lesson 1
This lesson requires diffraction glasses, prisms, crayons and paper. What are light sources? Is the Sun a light source? How about the Moon? Are bicycle reflectors light sources? Can you split white light into a rainbow? Is there an order to the colors in the rainbow?
You will also need a clean flat area to do the projects:ororas well as somemarkers and crayons.What does alight bulb have a candlein common with the Sun,and the distant stars?The light bulb, the sun, the candle and the distant stars are all lightSOURCES!They MAKE light.How do you KNOW
that there is light?You see light with
your eyes.To prove this to yourself,
close your eyes.What do you see?NOT MUCH!Your eyes are LIGHT detectors.With your eyes you can detect all the colors of theMost of the objects around you ARE NOT light sources.toy cartennis ballbookIn a room without ANY light, you could not see them.What about reflectors used on bicycles?What about reflectors used on bicycles?Reflectors don't produce light.
They only REFLECT light.Is the Moon
a light sourceNO! The Moon reflects
light from the SUN.
The Moon is NOT
a light source.Click for answer.Select or click on the images
that are light sources.What IS light?Light is NOT
a solid,
like a book
or a chair.Light is NOT
a liquid
like water
or juice.Light is NOT
a gas like the air in a balloon or
the wind that you feel.Light is ENERGY!from white light.Sunlight and electric lights
bathe the world in bright white light.You can make aRAINBOWOn to making rainbows.
Locate your light kit.When you are ready, go to the next slide.Find the rainbow glasses and the white card in your kit.Put on the glasses.Look around. Rainbows, rainbows, everywhere!You have split WHITE light
into a rainbow of colors.Are the colors in a rainbow always in the same orderYES!Click for answer.On a piece of paper
color your own rainbow. Are your colors in rainbow order?Here are the colors
in a rainbow -- in orderSomewhere Over the RainbowRainbow: With Garden HoseRainbow FactsOn a sunny day, you can use a prism to split WHITE sunlight into a rainbow of colors.BRIGHT
sunlightprismwhite
wallHold the prism
so the sunlight
shines through it
onto the white surface.Did you see a rainbow?A prism splits WHITE SUNLIGHT into a rainbow of colors.