Answer-Key-Its-All-About-Waves.doc
- 1. Name:_________________________________ Period:____________ Wave Worksheet-ANSWER KEY Slide 4. Define a wave any disturbance that transmits energy. Slide 5, go to website by clicking on here: (http://www.kettering.edu/~drussell/Demos/waves/wavemotion.html) 2. The website you were taken to shows 4 different kinds of waves, what are they? longitudinal, transverse, water and Rayleigh surface waves 3. A water wave is a combination of what two types of waves? longitudinal and transverse Slide 6. Close internet explorer and click on the ppt, be sure to put it in slide show format. 4. Some waves transfer energy by vibration. 5. Draw the movement of a vibration on your paper. Students should show arrows going back and forth between circles. Slide 8. 6. What are the three kinds of media? solid, liquid and gas/vapor Slide 9 7. Waves that do require a medium are called mechanical waves. 8. Two examples of mechanical waves are: ocean waves and sound waves Slide 10 9. Waves that don’t require a medium are called electromagnetic waves. Slide 11 10. Name five examples of electromagnetic waves. sunlight, X-rays, microwaves, radio waves, television waves Slide 12 11.Electromagnetic waves are what type of wave? (Circle one answer.) longitudinal or transverse Slide 14 Website: go to website by clicking on here: http://www.glenbrook.k12.il.us/gbssci/phys/Class/sound/u11l1c.html 12.What type of wave is a sound wave? (Circle one.) a. Mechanical b. Electromagnetic
- 2. Name:_________________________________ Period:____________ 13.Sound travels as what kind of wave? a. Surface wave c. Transverse wave b. Longitudinal wave d. Electromagnetic wave 14.Do sound waves require a medium? yes How is sound transmitted through a medium? Sound is transmitted through vibrations of molecules back and forth. Slide 16-22, Use the chart on the slides to answer the questions. 15.At 20,000 feet above sea level, how fast does sound travel (put the units!)? 707.3 mph 16.Does sound travel faster at 30,000 ft above sea level or 10,000 feet above sea level? 10,000 17.This chart is measuring the speed of sound in what type of medium? Circle one. Solid Liquid Gas 18. Does the temperature increase or decrease as the altitude increases? 19.What is the speed of sound in water (put your units!)? 1,482 m/s 20.Does sound travel faster in a solid medium or a gaseous medium? There are three different temperatures listed for air. Given this information, do you think that the speed of sound would be the same or different for hot water and cold water. Explain your answer. Different, it would likely be faster in hot water given that sound travels faster in hot air than cold air. Slide 24 21.When Isaac Newton took two prisms and flashed two rainbows, then he moved the prisms so they were on top of each other. He saw white light. Slide 26, go to website by clicking on here: Website: http://imagers.gsfc.nasa.gov/ems/waves2.html 22. Electromagnetic waves are formed when an electric field couples with a magnetic field. 23.These fields are perpendicular to each other. 24.Draw an image of an electromagnetic field.
- 3. Name:_________________________________ Period:____________ Slide 28 25.Where do you think the light beam is the brightest? a Slide 29 26.Look at the slide and explain what light absorption means in your own words. When particles in the air absorb or quench the energy from the light waves as they travel through air. Slide 31 27.Look at the slide and explain what light scattering means in your own words. Air particles can release energy as well as absorb it. When the light energy is released, the newly released light scatters. Slide 33 28.If you shine a light into a tank of water, what happens to the light beams when they hit the water? It bends away Slide 34 29.What is this phenomena called? refraction Slide 35 30.In this example, the light wave is moving through two mediums, what are they? a. Solid and gas c. Gas and solid b. Solid and solid d. Gas and liquid Slide 36 31.What happens when light moves from one medium to another? It slows down Slide 37, go to website by clicking on here: Website: http://www.glenbrook.k12.il.us/gbssci/phys/mmedia/optics/bp.html 32.View the broken pencil activity. Draw a picture to describe what you see when you place a pencil in water. a. Draw what happens when the pencil is in the middle of the glass. the portion of the pencil inside the cup of water looks larger b. Draw what happens when the pencil is to the left of the glass. the portion of the pencil inside the cup of water is slightly off to the side c. Draw what happens when the pencil is to the far left of the glass. the portion of the pencil inside the cup of water is looks like it is next to the side of the glass while the top portion is closer to the middle.
- 4. Name:_________________________________ Period:____________ Slide 39-41 33.Name three ways that light interacts with matter. absorption, reflection, transmission 34.Define transmission. When light passes through matter. Slide 42-44 35.Draw a line to connect the definition with the appropriate term. Light is transmitted through an object translucent Light the is transmitted and scattered opaque Light is not transmitted through the object transparent 36.Name an object in which light passes through windows, water, air 37.Name an object in which light does not pass through books, wood, bricks, etc.