Bell Ringer 3-17-14Write the question and your

answer..

Waves transfer ____, have describable

______, and interact in predictable ____

Hint: Ways, Energy, Properties

BELL RINGER 3/17/17THE BIG IDEA

Waves transfer energy, have describable properties, and interact in predictable ways.

Hint: Ways, Energy, Properties

MYP: Can you hear (OR SEE) me NOW?AOI: Health and Social EducationLearner Profile: InquirerEssential Question: What are waves?Standard: S8P4.Students will EXPLORE the wave nature of sound and electromagnetic radiation. A. Identify the characteristics of

electromagnetic waves and mechanical waves. Learning Target: Today I am learning about

the properties of waves, this is important because it will help me understand my world better.

Homework: Study for upcoming quiz on Friday.

Opening- Think – Pair - Share

Watch the Demo, then work with your elbow partner to come up with 5 example of waves in your daily experience.

Work Session- Flip Foldable1- Place 3 pieces of paper with long edges aligned and the short edges staggered.

2- Fold Edges over to reveal staggered spacing- staple along the top

1

2

Label the Flaps

WAVE

Mechanical & Electromagnetic Waves

PARTS OF A TRANSVERSE WAVE

PARTS OF A LONGITUNINAL WAVE

Transverse Waves

Longitudinal Waves

Wave Basics Definition: A disturbance that transfers

ENERGY through matter OR empty space What causes waves: Waves are

created when a source of energy causes a medium to vibrate.

A vibration is a repeated back and forth or up and down motion.

Waves are classified by what they move through or on how energy moves through them.

Classification based on what they move Through

Mechanical waves: waves that can ONLY move through a medium (through matter).. Mechanical waves require the particles of the medium to vibrate in order for energy to be transferred. They cannot travel through empty space!!

Electromagnetic waves: are waves that

can travel through matter or empty space where matter is not present.

NATURE OF WAVES- Do Not Write We now know that waves can be

mechanical or electromagnetic, but there are also 3 types of waves:

Three types of waves:*TRANSVERSE*LONGITUDINALSURFACE/WATER

Classification based on how energy moves through them.

Transverse waves- waves in which particles of the matter vibrate by moving in an up and down motion (move perpendicularly to the direction the wave is moving). Transverse waves are made up of

CRESTS and TROUGHSex: electromagnetic waves (light, x-ray)

PARTS of a TRANSVERSE WAVE!- Top

Parts of a Transverse Wave - Bottom Crest- The highest point of

a wave (top) Trough- The lowest point

of the wave (bottom)

Time to Practice Use your rope to demonstrate a

transverse wave:Work with a partnerOne of you move your end of the ROPE

back and forth (left and right, like a snake crawling), perpendicular to its stretched length.

The other student must hold his or her end of the ROPE still.

A series of transverse waves will be generated and will travel through a medium (ROPE)

LONGITUDINAL WAVES Particles vibrate parallel to (in the same

direction of) wave travel

Ex- Sound

http://www.lcse.umn.edu/specs/labs/glossary_items/rarefaction_spring.html

Parts of a longitudinal wave - top

Parts of a longitudinal wave- Bottom

When the particles move close together it is called COMPRESSION and when they move farther apart RAREFRACTION .

Sound waves

Closing- BBC Bitesize