Slide 1 / 59 Slide 2 / 59 Waves, Light & Information Classwork and Homework www.njctl.org Slide 3 / 59 Slide 4 / 59 1 True or False: Waves are not regular patterns of motion that are caused by a disturbance. Classwork #1: What are Waves? A True B False Slide 5 / 59 Slide 6 / 59 2 How can you produce waves in a basin of water? 3 A ___________ wave moving along a rope will cause each piece of rope to move up and down.
Slide 7 / 59 Slide 8 / 59 4 How do you make a transverse wave move through a rope? Homework: What are Waves? Slide 9 / 59 Slide 10 / 59 5 Explain the direction that a transverse wave 6 If the surface of water is calm and no disturbance moves through water and the motion of the drops is moving across the surface, this is referred to as of water. ________________. Slide 11 / 59 Slide 12 / 59 7 In the following picture, label all the parts of the wave: Classwork #2: Describing Waves
Slide 13 / 59 Slide 14 / 59 8 What is the highest point a wave will reach called? Homework: Describing Waves A Crest B Trough Slide 15 / 59 Slide 16 / 59 9 What is the lowest point a wave will reach called? 10 The distance from the dotted line running through the middle of the wave to either the crest or trough is called the _________. A Crest B Trough Slide 17 / 59 Slide 18 / 59 11 The distance between two close crests of a wave 12 What makes a wave periodic? is called the _____________________.
Slide 19 / 59 Slide 20 / 59 13 The ________________ around you is occupied by very small objects that we call particles. You can’t see them because they’re too small. Classwork #3: Sound Slide 21 / 59 Slide 22 / 59 14 A ________________ moves through the air 15 Compare and contrast the motion of particles in a through a series of collisions. transverse wave and a longitudinal wave. Slide 23 / 59 Slide 24 / 59 16 True or False: Sound is an example of a transverse wave. Homework: Sound A True B False
Slide 25 / 59 Slide 26 / 59 17 True or False: Higher pitched sounds are always 18 Can sound move in outer space? Support your louder then lower pitched sounds. argument with some facts you know about space and longitudinal waves. A True B False Slide 27 / 59 Slide 28 / 59 19 We need ________________ in order to see. Classwork #4: Sight Slide 29 / 59 Slide 30 / 59 20 So far, we learned that three things could happen 21 The sun and other light sources give off to light, it can either be absorbed, bent, or ________________ of light. They will continue on ________________. in straight paths until they collide with something else.
Slide 31 / 59 Slide 32 / 59 22 Why can’t we see in the dark? Homework: Sight Slide 33 / 59 Slide 34 / 59 23 True or False: We can see an object because after the light hits the object it is reflected back to our eyes. Classwork #5: Color A True B False Slide 35 / 59 Slide 36 / 59 24 What colors do you get after passing a beam of 25 True or False: All of the colors are contained white light through a prism? within a beam of white light. A True B False
Slide 37 / 59 Slide 38 / 59 26 True or False: The color we see is the color that is absorbed by the object. Homework: Color A True B False Slide 39 / 59 Slide 40 / 59 27 The color that we see is ________________ off the 28 A box appears red because it ________________ the color red and object; this is why we see that color instead of all the other colors. ________________ the rest of the other colors. Slide 41 / 59 Slide 42 / 59 29 If nothing is reflected off the surface of the object what color do you see? Classwork #6: Mirrors
Slide 43 / 59 Slide 44 / 59 30 True or False: Light reflected off the surface of a 31 If an object is located 5 meters in front of a plane mirror will go off at a different angle then the one mirror, how far will the image appear behind the it hit the mirror. mirror? A True B False Slide 45 / 59 Slide 46 / 59 32 Which path will the beam of light take after hitting the mirror or mirrors? (The colors for the paths are just meant to make it easier to see the different paths of light, we are not asking anything about color here!) Homework: Mirrors A path 1 B path 2 C path 3 Slide 47 / 59 Slide 48 / 59 33 Describe what you see when you place an object like a ruler or pencil into a glass of water. Classwork #7: Refraction
Slide 49 / 59 Slide 50 / 59 34 Why does the ruler or object placed in the water appear to be bent? Homework: Refraction Slide 51 / 59 Slide 52 / 59 35 What do we call the bending of light when it happens from moving from one material into another? Classwork #8: Digitized Information Slide 53 / 59 Slide 54 / 59 36 Information is transmitted through waves, how 37 If you needed to communicate with someone right does a cellphone convert from one wave to next to you and didn’t have to be quiet, what another to transmit what you are saying to would be the easiest way? someone else?
Slide 55 / 59 Slide 56 / 59 38 If your friend was away on vacation in Europe, what would be the easiest means of communication? Homework: Digitized Information Slide 57 / 59 Slide 58 / 59 39 Binary code is comprised of 0’s and 1’s to 40 If you are given a 3x3 grid and the string of communicate information. If we wanted to form numbers: 100010100 and told that the number 1 the image of an x on a 3x3 grid what would be the represents a black square and the number 0 string of numbers we would need to input represents a white square, what image would you (remember, go left to right on the top row, then have made? left to right on the middle row, then left to right on the bottom row)? Slide 59 / 59 41 Write the following message in Morse Code: Hello World
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