10/6 - 7th Grade Agenda Learning Objective: Learn about waves and the Electromagnetic Spectrum Brain Pop: Waves Textbook Reading: p. 38 - 39 HW: Reading.

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10/6 - 7th Grade Agenda Learning Objective: Learn about waves and the Electromagnetic Spectrum Brain Pop: Waves Textbook Reading: p. 38 - 39 HW: Reading & Note Taking p.23 – 26

Daily Reflection Prompt: What is the difference between manipulated and responding variable?

Wave A wave is a disturbance that transfers ene_____ from place to place. Who can give me examples of waves? Sound waves, Light waves rgy

Is light a wave? Yes But why? because there is physical space between the peaks of the waves - it is a real, physical, wave. Just like water waves and sound waves, you can do "wave things" to light waves, such as send them through diffraction gratings and see the interference.

Picture of Light Wave Image of a pulse of light that is 2.5 billionths of a millionth of a second long

Energy In science, energy is defined as the ability to do wo___. rk

Medium The material through which a wave tra____ is called a medium Who can give me examples of medium? vels

Do Light Waves need a medium? Scientist first thought that Light needed to travel through a medium. So they invented the idea of aether in space. They look for aether in outer space but they found nothing. So, Light Waves can travel without a medium even in a Vacuum of outer space.

Crest gh Hi___ point of a wave is called a crest

Trough ow L___ point of a wave is called a trough

Amplitude imum Amplitude is the max______ distance that the particles of medium carrying the wave move away from their rest positions. Which rope has higher amplitude?

Wavelength The distance between two corresp______ parts of a wave is its wavelength. Which rope has longer wavelength? onding

Frequency Wave frequency is the num_____ of complete waves that pass a given point in a certain amount of time ber

Daily Reflection Prompt: Write 3 facts that you learned from the video.