Monday, January 11 th Entry Task Write down 3 things that you feel you have learned really well about sound waves. Write down 3 things that you feel you could use a little more time studying about sound waves. Schedule: Review Chapter 16 Homework: Finish chapter 16 review Objective: I can understand important information about sound waves Please have on desk: 16.3 RSG

Tuesday, January 12 th Entry Task Decide if the following statements are true. If they are write them down as is, if they are not, change it and write down a correct statement. 1.Mechanical waves transfer energy through a vacuum. 2.A wave is a disturbance that transfers energy 3.Most EM (electromagnetic) waves are invisible but detectable Schedule: 17.1 Notes Homework: 17.1 RSG Objective: I can understand that Electromagnetic waves have unique traits Please have on your desk: Chapter 16 review

ISN Page 93 is the chapter 16 review packet 94 is tonight's homework, the 17.1 RSG 95 should be titled Electromagnetic Waves and will be the notes we are taking today

Electromagnetic Wave Disturbance that transfers energy through a field. –EM wave –Field- area around an object where the object can apply a force to another object

How EM waves form Read that section on page 554 Summarize in your own words how EM waves form –Include words such as: Electric field Magnetic field Vibrations Particles

Sources of EM waves List some sources of EM waves after reading page 554

Radiation Energy that moves in the form of EM waves Radiation, unlike a mechanical wave, can travel without a medium Mechanical waves eventually stop travel due to giving up energy to the medium Radiation can travel essentially forever since it can travel in empty space

How EM waves travel in a Vacuum Read that section from page 555 Briefly explain why EM waves can travel in a vaccuum.

Speed of EM waves in a Vacuum Read that section from page 555 Answer the following questions using full sentences, IQIA –What do we call the time it takes for the Sun’s rays to hit Earth? –How are EM waves used to measure distances in space?

Wednesday, January 13 th Entry Task Match the definition to the correct term: Definitions: 1.The transfer of energy by EM waves 2.A disturbance that transfers energy through a field Terms: a.Electromagnetic wave b.Radiation c.Medium d.vacuum Schedule: EM Waves notes Homework Read/RSG 17.2 Objective: I can understand important information about the different electromagnetic waves Please have on desk: 17.1 RSG

EM Waves What is different between electromagnetic waves (gamma rays, radio waves, x-ray, etc) –Wavelength –Frequency

Frequency Higher frequency –More EM vibrations per second –Shorter wavelength –More energy Lower frequency –Less EM vibrations per second –Longer wavelength –Less energy

EM Spectrum Range of all EM frequencies Left of spectrum are waves with longest wavelength, lower frequency Right are waves with shortest wavelength, higher frequency

Measuring EM Waves EM frequency is measured in hertz….Just like sound!

Thursday, January 14 th Entry Task Schedule: SCRATCH Homework Objective: I can understand Please have on desk:

Friday, January 15 th Entry Task Sing the EM spectrum song in your head. 1.List the parts of it from shortest wavelength to longest wavelength. 2.Put a circle around the part that has the highest frequency 3.Put a square around the part that has the longest wavelength 4.Put a triangle around the part that takes up the least amount of the spectrum (has the smallest range of frequencies) Schedule: EM Spectrum Book Objective I can understand the different electromagnetic waves and their properties Homework: Finish EM spectrum Book Please Have on Desk: 17.2 RSG

1.What are the two types of fields that make up an EM wave? 2.What are two sources of EM waves on Earth? 3.In the figure on page 554: how is wavelength of the wave measured? 4.How would a diagram of a wave with lower frequency differ from the wave in the picture on page How do EM and mechanical waves differ in the way they form? 6.How are EM waves used to measure distances in space? 7.In what form do EM waves transfer energy in a vacuum? 8.What happens when EM waves encounter a material medium? 9.How does microwave cooking depend on reflection? 10.What is the function of the fan in the microwave? 11.Why doesn’t the inside of the microwave oven get hot?