Not all waves are the same Observe, Question, Comment Do Now: Not all waves are the same (Please draw the picture and write your answers in complete sentences.) 1. How are the waves different from each other? 2. Which wave has the highest frequency? Which wave has the lowest? How do you know? 3. Which wave has more energy? How do you know? 05/26/11 05/26/11 Standard 6a: Students know visible light is a small band within a very broad electromagnetic spectrum. Objective: Students will… Explain what causes waves Describe the properties of waves A B C D E A B C 5L 5R

Copied from the last slide  Brain Pop: Waves 1. What do all waves have in common? 2.What does a mechanical wave need? 3. How are electromagnetic waves different from mechanical waves? 4. What are examples of electromagnetic waves? 5. How is the energy of the wave related to its amplitude? 6. Long wavelength _____ frequency 7. Short wavelength _____ frequency Challenge Question: Why can light travel through space, but sound cannot? (Please write answer in complete sentences.) Observe, Question, Comment, Picture, or Logo 05/25/11 05/25/11 NOTES Ch.2, Sec.1--Waves and Electromagnetic Spectrum Copied from the last slide  4L 4R

Notes: You tube videos on WAVES Observe, Question, Comment Do Now: Not all waves are the same (Please draw the picture and write your answers in complete sentences.) 1. How are the waves different from each other? 2. Which wave has the highest frequency? Which wave has the lowest? How do you know? 3. Which wave has more energy? How do you know? 05/26/11 05/26/11 Standard 6a: Students know visible light is a small band within a very broad electromagnetic spectrum. Objective: Students will… Explain what causes waves Describe the properties of waves Notes: You tube videos on WAVES A B C D E A B C Observations Questions 5L 5R

Notes: Youtube videos on WAVES Observations Questions Record your observations How do they work? How are they different? How are they the same? Record your questions What else do you want to know??? Slinky showing transverse vs. longitudinal/compressional http://www.youtube.com/watch?v=LlEpt8G0Hik&NR=1&feature=fvwp Bill Nye Waves Song http://www.youtube.com/watch?v=77slIdkkQWg&feature=related Creating a longitudal/compressional wave animation http://www.youtube.com/watch?v=aguCWnbRETU&feature=related Creating a transverse wave animation http://www.youtube.com/watch?v=UHcse1jJAto&feature=related Transvers and longitudinal at the same time http://www.youtube.com/watch?v=Rbuhdo0AZDU&NR=1 5R

Workbook Practice  Everyone needs a textbook open to page 39 If you have a workbook, please turn it to page 31 If you do NOT have a workbook, please get out 2 sheets of lined paper Begin copying from the packet that I am loaning to you You must include BOTH the question and your answer Everyone will READ pages 39-41 in the book and answer questions #1-19 in the workbook Please work QUIETLY either alone or with one person at your table You have 20-30 minutes to finish before we grade it For early finishers, find an space in your workbook to complete: Page 40 in the textbook, Figure 2 “Developing Hypotheses” questions Page 45 in the textbook, Section 1 Assessment: #1 and #2 (a,b,c) Page 72 in the texbook, #21 (a, b, c) AND # 22, and # 23 Please write answers in complete sentences and copy drawings.

Unit 10 Quiz #1: Waves Please get out a half sheet Put your FIRST and LAST name, DATE, and PERIOD in top, right corner Put the TITLE and number it 1-10 Put the Standards Box at the top for STANDARD 6A You DO NOT need to write the question

Unit 10 Quiz #1: Waves The material through which a wave travels is called the ____________. True or False? When waves travel through a medium, they carry the medium with them. Give an example of a wave that can travel through empty space. __________________

Quiz continued…. 4. A wave with a bigger amplitude has ____________ energy. (more/less) 5. A wave with a longer wavelength has a __________ frequency. (higher/lower) 6. True or False? Light and sound waves both travel through empty space. #7-10 with the ELMO

Copy from next slide NOTES Observe, Question, Comment, Picture, or Logo 05/26/11 05/26/11 NOTES Ch.2, Sec.1--Waves and Electromagnetic Spectrum PART 2 Copy from next slide 6L 6R

NOTES: Ch.2, Sec.1—Waves/Electromagnetic Spectrum PART 2 10. Hertz = the unit used to measure frequency of a wave Example: a wave that cycles once per second has a frequency of 1 Hz 11. Electromagnetic Wave = transfers electrical and magnetic energy --does NOT need a medium --move at the speed of light --Real-life examples: light, radio waves, microwaves, X-rays Please draw the picture!!! 6R

NOTES: Ch.2, Sec.1—Waves/Electromagnetic Spectrum PART 2 12. Electromagnetic Radiation= the energy transferred by electromagnetic waves --no need for a medium can move E thru empty space --this means we can see the sun and stars in space!!! 11. Electromagnetic Spectrum = complete range of electromagnetic waves placed in order of increasing frequency (decreasing wavelength) PAGE 44-45 6R

14. Visible Light --all the others are INVISIBLE to humans!!! = the electromagnetic waves that the HUMAN eye can see --all the others are INVISIBLE to humans!!! (RADIO WAVES, INFRARED RAYS, ULTRAVIOLET RAYS, X-RAYS, and GAMMA RAYS) Visible Light 6R

Exit Slip: What did you learn about…???? 1. Waves 2. Electromagnetic waves 3. Visible light