6.P.1 Forces In Motion

INTRODUCTION TO WAVES…6.P.1.1

STUDY HALL

Work silently at your desk (homework, reading, drawing, etc). Sit in assigned seats. No Talking

Written Response: April 30

Earlier this year we studied how waves carry energy. List the 2 types of waves we learned about and describe how we used a slinky to learn more about each wave type.

Brainstorm first, then construct your sentences.

Waves & Their Characteristics

Add to alphabet book…

• Vibrations: • create waves • Carries energy which transfers

(spreads) the energy away from the source.

Let’s learn about frequency

• This Brain Pop video will teach you!• http://www.brainpop.com/scien

ce/energy/waves/

Transverse Waves: Draw this

Transverse Wave Challenge• On the wave you drew, label:• Wavelength• Crest• Trough• Amplitude• Rest position• Frequency

Add to alphabet book…..

• Wavelength- the space between two identical parts of a wave

– from a crest to a crest, or a trough to a trough.

Add to alphabet book…..

• Trough- the bottom or lowest part of a wave, which happens every wavelength.

Add to alphabet book…..

• Crest- the top or peak of a wave. Crests occur every wavelength.

Add to alphabet book…..

• Amplitude- the height of the wave. • Shows the energy of the wave

Add to alphabet book…..

• Frequency- the number of times a wave passes a point in one second• How fast the wave is moving

Transverse Wave Facts

• Light waves, and waves in the water are transverse• Light waves are present in a vacuum

like outer space

Transverse Waves

• How to remember-• Rock thrown in a pond• The Wave at a sports event• Travelling=Transverse waves up/down

left/right

Let’s do some of this stuff!• Transverse wave- with a slinky!• Let’s pick my assistant• Here is the demo.• I will hold the slinky in the rest or equilibrium position.• My assistant will move it to the left and to the right.• Up and down.

Another thing for us to do to remember Transverse Waves

• The Wave!

• I will show you how we’ll do the wave.• We are just like a wave as the energy moves

down the line.• When I point to you react accordingly.

Amplitude

• 1st wave- Move our hand a few inches up and down.

• 2nd wave-Move our arms up and down• 3rd wave-Move our whole bodies and

arms up and down

Art Talent Time

2 Crests 10 Troughs

Teacher on 10 cups of coffee Longitudinal Waves

• http://www.youtube.com/watch?v=aLAB-d8VnZ8

Longitudinal Wave Facts

• Sound waves, and seismic earthquake waves are longitudinal.

• These waves can not move through a vacuum in space.

Let’s try the slinky again!

Wave Types

• Seismic Waves: waves of energy that travel through the Earth's layers• Example: earthquakes• http://www.iknowthat.com/mhscie

nce/Earthquakes/Fixed.htm

Wave Types

• Electromagnetic waves = waves which can travel through the vacuum of outer space.

• Mechanical waves = require the presence of a material medium in order to transport their energy from one location to another.

Write EVERYTHING on this slide…