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Physical Science Class. Today’s Topics: Waves and Wave Properties. To begin class.. Open your Science Notebooks. What do you think of when you hear the word wave ? Write a brief description in your science notebook of what you think a wave is. How can we describe a wave?.

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Physical Science Class

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Physical science class

Physical Science Class

Today’s Topics:

Waves and Wave Properties


To begin class open your science notebooks

To begin class..Open your Science Notebooks

  • What do you think of when you hear the word wave?

  • Write a brief description in yourscience notebook of what you think a wave is


How can we describe a wave

How can we describe a wave?

  • A Wave is disturbance that transfers energy from 1 place to another


Let s review key terms

Let’s Review Key Terms

  • Medium: the matter a wave passes through

  • Amplitude (height): the distance a medium rises or falls from its resting point

  • Wavelength: the distance from any 1 point on a wave to an identical point on the next weave. This measures the length of 1 cycle


Physical science class

Image source:

http://www.physicsclassroom.com/class/waves/Lesson-1/Categories-of-Waves


Longitudinal vs transverse waves

Longitudinal vs. Transverse Waves

  • Let’s view a simulation

  • http://www.animatedscience.co.uk/blog/wp-content/uploads/focus_waves/tl-wave.html


Physical science class

Surface Waves

A combination of

transverse and longitudinal.

An example is an Ocean Wave: As a wave travels through the medium (water), the particles of that medium travel in clockwise circles.

As a wave heads into shore, the top of the wave is free but the bottom of the wave becomes constricted, causing the wave´s crest to build. Eventually the water is unable to support the wave and it breaks


Let s watch and see how a wave s crest builds

Let’s watch and see how a wave’s crest builds…

  • http://news.bbc.co.uk/2/hi/4136289.stm

    • This shows a simulation on how a tsunami is formed

      You Tube has many videos of the 2004 Tsunami waves and the destruction


Parts of a wave

Parts of a Wave

  • The wavelength, λ, of a wave is the distance from any point on one wave to the same point on the next wave along

Image courtesy of: http://www.bbc.co.uk/bitesize/standard/physics/telecommunications/communication_using_waves/revision/5/


Parts of a wave1

Parts of a Wave

  • The amplitude, a, of a wave is the distance from the centre line (or the still position) to the top of a crest or to the bottom of a trough. Measured in meters


Parts of a wave2

Parts of a Wave

  • The frequency, f, of a wave is the number of waves passing a point in a certain time. We normally use a time of one second, so this gives frequency the unit hertz (Hz), since one hertz is equal to one wave per second


Video parts of a wave

Video - Parts of a Wave

  • http://safeshare.tv/w/SkYbVfMRpv


Physical science class

Who Wants

to be a

Millionaire?

Let’s Play!! Waves Review and Practice


Question 1 a wave is a disturbance that transfers from 1 place to another

energy

light

matter

water

Is this your

Final Answer?

Yes

No

Question 1?A wave is a disturbance that transfers ______ from 1 place to another


Question 2 name the 3 types of waves

Ocean, land, water

Compression, longitudinal, surface

Transverse, surface, compression

Longitudinal, transverse, surface

Is this your

Final Answer?

Yes

No

Question 2?Name the 3 types of waves

$100


Question 3 how is amplitude measured in units

feet

yards

meters

Meters/seconds

Is this your

Final Answer?

Yes

No

Question 3?How is amplitude measured in units?

$200


Question 4 the distance crest to crest is

amplitude

wavelength

frequency

meters

Is this your

Final Answer?

Yes

No

Question 4?The distance crest to crest is:

$500


Question 5 1 hertz is equal to 1 wave per

inches

second

hour

minute

Is this your

Final Answer?

Yes

No

Question 5?1 hertz is equal to 1 wave per _________

$1000


Question 6 ocean waves are

Compression waves

Longitudinal waves

Transverse waves

Surface waves

Is this your

Final Answer?

Yes

No

Question 6?Ocean waves are _______

$5000


Question 7 transverse waves move

Up and down

circular

Side to side

longitudinal

Is this your

Final Answer?

Yes

No

Question 7?Transverse waves move:

$10,000


Question 8 frequency of a wave is the of waves passing a point in

1 minute

A certain time

1 hour

Meters per second

Is this your

Final Answer?

Yes

No

Question 8?Frequency of a wave is the # of waves passing a point in:

$50,000


Question 9 hz stands for

height

Hertz/second

hertz

horsepower

Is this your

Final Answer?

Yes

No

Question 9?Hz stands for

$100,000


Question 10 the matter a wave passes through is

matter

soil

air

medium

Is this your

Final Answer?

Yes

No

Question 10?The matter a wave passes through is:

$50,000


Question 11

Wrong Answer

Wrong Answer

Correct Answer

Wrong Answer

Is this your

Final Answer?

Yes

No

Question 11?

$1,000,000


Physical science class

A

B

C

D

Poll the audience

?

C

B

D

A

?

?

?


Physical science class

Phone a friend


Physical science class

50 / 50


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