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10/7 & 10/8 - 7 th Grade Agenda. Collect: Reading & Note Taking : p. 35- 36 Pass back HW & Test Transparent, Translucent and Opaque Disappearing Water trick Video: Science in Action Waves Equipment Lab Passback Graded HW & Test Class Reading: p. 44 - 50

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10 7 10 8 7 th grade agenda

10/7 & 10/8 - 7th Grade Agenda

Collect: Reading & Note Taking : p. 35- 36

Pass back HW & Test

Transparent, Translucent and Opaque

Disappearing Water trick

Video: Science in Action Waves

Equipment Lab

Passback Graded HW & Test

Class Reading: p. 44 - 50

HW: Reading & Notetaking : p.37 - 40

daily reflection
Daily Reflection
  • Prompt: Give 5 examples of electromagnetic waves. What is the one difference between all the electromagnetic waves? .
electromagnetic wave
Electromagnetic Wave
  • An electromagnetic wave consists of vibrating electric and magnetic field that move through space at the speed of lig____

ht

what are some examples of electromagnetic waves
What are some examples of electromagnetic waves?
  • Radio Waves
  • TV Signals
  • Microwaves
  • Infrared rays
  • Light
  • Ultraviolet rays
  • X-Ray
how fast do electromagnetic waves travel
How fast do electromagnetic waves travel?
  • It is the fastest thing in the universe
  • 300,000 km per second
  • 186,000 miles per second
  • It takes 8 minutes for light to travel from the sun to the earth
  • It takes 3 million years for light to travel from the nearest galaxy (andromeda) to the earth
how do we use radio waves microwaves
How do we use Radio Waves & Microwaves?
  • Radio & TV signals
  • Microwave Oven
  • Radar
  • MRI
  • Cell phone
using microwaves
Using Microwaves
  • Why do you see sparks you put metal objects in a microwave?
  • Because of the build up of electrical energy in the metal
  • The long wave length of Microwaves can pass right through glass and plastic. That is why microwaves do not heat glass and plastic containers.
cell phone towers
Cell phone towers
  • These towers are placed 1 -2 miles apart in a city
  • They use M______wave to communicate with cell phones
  • They can be used to locate the loc_______ of the caller.

icro

ation

how do we use infrared rays
How do we use Infrared Rays?
  • Conventional Oven
  • Heat Lamps
  • Thermograms
transparent materials
Transparent Materials
  • Transparent material trans_____ most of the light that strike it.

mit

translucent materials
Translucent Materials
  • A translucent material sca____ light as it passes through, just as smoke, fog, and clouds scatter light as it passes through the air.

tters

opaque materials
Opaque Materials
  • An opaque material refl_____ or absorbs all of the light that strikes it.

ects

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