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# 1.2

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### 1.2

1. 1. Science Starter: February 8, 2012 <ul><li>How could you measure each of these of things? </li></ul><ul><ul><li>Width of a door opening </li></ul></ul><ul><ul><li>Volume of a liquid </li></ul></ul><ul><ul><li>Length of time </li></ul></ul>Write out the questions and answer You have 5 mins after the bell rings. MAKE SURE TO PUT THE DATE
2. 2. Waves have Measureable Properties Pages 16-21 (section C)
3. 3. Measuring Wave Properties <ul><li>Crest - the highest point, or peak of a wave </li></ul>
4. 4. Measuring Wave Properties <ul><li>Trough - the lowest point, or valley of a wave </li></ul>
5. 5. Measuring Wave Properties <ul><li>Amplitude - the distance between a line through the middle of a wave and crest or trough </li></ul>Amplitude is important because it indicates how much energy a wave is carrying. *The bigger the amplitude, the more energy the wave has.*
6. 6. Measuring Wave Properties <ul><li>Wavelength - the distance from crest to crest or trough to trough </li></ul>
7. 7. Measuring Wave Properties <ul><li>Frequency - the number of wavelengths that passes a fixed point in a certain amount of time </li></ul>
8. 8. Wave Speed <ul><li>Wave speed can be measured: </li></ul><ul><ul><li>Speed= wavelength x frequency </li></ul></ul>
9. 9. <ul><li>http://videos.howstuffworks.com/discovery/27959-assignment-discovery-wavelength-basics-video.htm </li></ul>