Presentation on theme: "Ms. Bandy General Science – Wave Interactions"— Presentation transcript:
1 Ms. Bandy General Science – Wave Interactions Day 1Parts of a WaveDay 2Ms. BandyGeneral Science – Wave Interactions
2 17 Parts of Waves Monday February 27th, 2012 Warm-up: Objective: Students will be able to observe characteristics of waves in order to identify parts of waves.Homework: Wave Interactions Homework 1 (Due Fri 3/2)Monday February 27th, 2012Warm-up:(1) Why is the spring toy considered a medium? (answer in complete sentences)(2) A _________is a disturbance that transfers __________ from place to place
3 Vocabulary Reference Wave A disturbance that transfers energy from one place to anotherEnergyThe ability to do work ; or the ability to cause matter to move or changeMediumThe material through which the wave travels
4 Parts of WavesINBOXI always thought that waves were only found at the beach and they carried me to the shore; but, now I know that isn’t true! True. The waves don’t carry you, but as you sit on your board, don’t you rise up with the wave? Yes! That’s right. I bet that rise has a name and knowing more about that name will definitely land us that job we want!From
5 17Demonstration1. Observe the demonstration of wave motion by your teacher.2. Illustrate the movement of the waterDescribe different wave-like motions you have observed in your life. How are they similar or different to the movement you observed?
6 Observe the demonstration by your instructor. To understand the parts of waves, it helps to represent a wave on a diagram. In this activity, you will generate waves on a rope and use your data to illustrate the parts of a wave.Observe the demonstration by your instructor.
7 Making Waves16(1) Lay the rope on top of the masking tape. (2) Hold one end of the rope without moving while your partner makes a steady side-to-side motion so that one “hill” and one “valley,” is formed with the rope. (3) Mark the “hill” and “valley” by laying your pencil across them. (4) Illustrate your wave on Page 16. (include the masking tape in your drawing) (5) Measure the distance from the tape to the hill and from the tape to the valley. Record your measurements on your paper.
8 16Making WavesUse information from pages of Prentice Hall: Science Explorer, Sound and Light to label your diagram with the parts of waves.Be sure to include:Rest positionCrestTroughAmplitudewavelength.
9 16 or 17AnalysisIdentify one other example of wavelike motion that happens in everyday life that has not been mentioned.Explain why your example demonstrates wavelike motion.
10 19 Parts of Waves Tuesday February 28th, 2012 Warm-up: Objective: Students will be able to observe characteristics of waves in order to identify parts of waves.Homework: Wave Interactions Homework 1 (Due Fri 3/2)Tuesday February 28th, 2012Warm-up:(1) How do waves transfer energy? (answer in complete sentences)(2) Waves are produced when a source of energy causes a medium to…A. Shrink B. Expand C. Vibrate D. Move
11 18 Wave Practice Draw a wave as shown by your instructor on page 18. As a new part of the wave is presented, add it to your diagram and include the definition!!!
16 Rest PositionThe position at which the wave is at rest.An imaginary line that represents where the medium would be if the energy stopped being transferred.
17 WavelengthThe distance between two identical points on neighboring waves.The measured distance from one crest to another crest or from one trough to another trough
18 AmplitudeThe maximum distance that the medium moves from the rest position.
19 Types of Mechanical Waves 19Types of Mechanical WavesExamine Figure 5 on page in Prentice Hall: Science Explorer, Sound and Light. Construct a Venn diagram or chart to compare a transverse and longitudinal wave.
20 Vocabulary Reference Mechanical Wave A wave that requires a medium through which to travel.
21 Figure 1: Diagram of a Wave 1. In Figure 1, “Diagram of a Wave,” wavelength is represented by letter ___ 2. Identify how many waves there are in Figure 1. ____________
22 Analysis #33. Using Figure 1, explain what would happen to the number of waves if the wavelength increased. Justify your response. The number of waves will decrease, because the wavelength is increasing.
23 Exit Ticket FIGURE 1 DIAGRAM OF A WAVE In Figure 1, “Diagram of a Wave,” wavelength is represented by letter ________.Using Figure 1, identify and explain which letter would be most affected if the amplitude increased. Justify your response
24 Transverse wave Longitudinal Wave A wave in which the vibration is moving in a direction perpendicular to which the wave is traveling.Longitudinal WaveA wave in which the vibration is moving in the same direction that the wave is traveling.