Presentation on theme: "NOVEMBER 20 (A Day) November 21 (B day)"— Presentation transcript:
1 NOVEMBER 20 (A Day) November 21 (B day) SCIENCENOVEMBER 20 (A Day)November 21 (B day)
2 Interactive NotebookAdd this entry to your notebook: 6.P.1.2: Visible LightAlso add this entry to your table of contents…
3 Our standard….6.P.1.2: Explain the relationship among visible light, the electromagnetic spectrum, and sight
4 Today’s objective is to find out…. What does it mean for light to be reflected?How can light be absorbed?How is light refracted in water?How can light be transmitted or scattered?
5 Study Jams video 1. What does it mean for light to be reflected? 2. What does it mean for light to be refracted?3. How is light absorbed?
6 LightWrite these notes!Light is a form of energy emitted by the Sun and light producing objects on Earth.Examples: a flashlight, classroom lights, a candle
7 Interactive notebooks…. Today you will be recording information and drawing various images for visible lightYou will find the next 2 blank pages in your notebook and draw a vertical line down the middleSee teacher exampleThe left side will be imagesThe right side will be notesDoes anyone have any questions?
13 Draw and label pictures…. R-redO-orangeY-yellowG-greenB-blueI-indigoV-violetVisiblelight
14 Visible light travels in transverse waves. Write these notes!Can be seen when light waves are emitted (given off) and light enters our eyes.Visible light travels in transverse waves.It has different wavelengthsHuman eyes only respond to “visible light wavelengths” within the electromagnetic spectrum
16 How do we see different colors? Brain Pop video“Color”Bill Nye: Light and Color
17 Light Transmission – 2 types Write these notes!Definition - when light travels through a surface or object.1. Direct: light goes through air or glass2. Diffused: light goes through frosted materials (privacy glass)
18 Reflected Light - Notes Write these notes!Light hits a smooth surface and bounces offLight can be absorbed (taken in) or reflected (bounced off )White light = contains all the colors (ROYGBIV)Absorbed light = the colors not seenReflected light = the colors seenWhite objects reflect all the colors (ROYGBIV)Black objects absorb all the colors of light
19 Reflected Light - Notes Write these notes!White light shining on an apple:The color red bounces off the apple and enters our eyes while all the other colors are absorbed
20 Reflected Light: Introduction Video Discovery Ed video“ Reflected Light” (1:08 minutes)
21 Reflected LightThe colors we see are the colors reflected by objects; this explains why different objects have different colorsGreen Shamrock (green is reflected)Yellow Banana (yellow is reflected)Orange Pumpkins (orange is reflected)
22 Reflected Light - Notes Write these notes!This is why we wear light colored clothes in the summer because more colors are reflected and we feel coolerThis is why when we wear dark clothing in the summer, we feel hotter (it is absorbing light, just like our radiometer experiment too)
23 Now it’s your turn….Pick five items in the classroom and for each item list what color is being reflected and what colors are being absorbed.
24 Ms. Maas’ Five!1. Black Lab Table Tops = it is absorbing all colors (ROYGBIV) and reflecting black (we see) 2. Yellow Textbooks = reflecting yellow (we see) and absorbing ROGBIV 3. Blue Chairs = reflecting blue (we see) and absorbing ROYGIV 4. Green Plant = reflecting green (we see) and absorbing ROYBIV 5. American Flag Red Stripes = reflecting red (we see) and absorbing OYGBIV
25 Refracted Light: Introduction Video Discovery Ed videoRefracted Light (1:44 minutes)
26 Refracted Light - Notes Write these notes!All the colors of the visible spectrum travel at their own unique speed.When light travels from one substance into another substance it changes speed and bends.Light travels slower through water and glass than it does through airObjects look broken or bent in water!
27 Refracted Light - Notes Write these notes!White light entering a glass prism can be refracted (or bent) and separated into the visible spectrum (ROYGBIV).Colors refract (bend) at different angles because each color travels at different speeds.Violet is bent the most and red is bent the least
28 Refracted Light - Notes Write these notes!White light through a prism = all seven colors refractedThe refracted spectrum can be bent again, with a second prism = back to white light!
30 Refracted Light - Notes In nature, rainbows provide us with a beautiful spectrumRainbows occur when sunlight is refracted in small droplets of water.The raindrops act like little water prisms that refract the light and form the rainbow.
31 Light ScatteringWrite these notes!When light interacts with an object causing the light to be redirected in all directionsLight scattering = why the sky is blue during daytime and red and orange at sunrise and sunsetMolecules in the air scatter blue light the most when the sun is overheadWhen is sun is rising or setting, we see red and orange colors because the blue light has been scattered out and away from our line of sight.
36 Cow Eye Dissectionthe box is a model of your eye. Light enters through the opening in the front of your eye (the iris) and passes through a crystalline lens. The lens focuses the light into an image that falls on your retina (the inside of the back of your eye). When an image falls on the retina, nerve cells send signals to your brain which are interpreted to create an image.
38 Listen to the video to find out these answers.. What does it mean for light to be reflected?What does it mean for light to be absorbed? When light is taken in by a substance. This allows some colors to be taken in while other colors are reflected (these are the colors we see)What does it mean for light to be refracted? When light travels from one substance into another substance it changes speed and bends.