How do you light up your world part i virgi nia sol 5 3
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How do you LIGHT Up your world ? Part I-Virgi nia SOL 5.3 PowerPoint PPT Presentation


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How do you LIGHT Up your world ? Part I-Virgi nia SOL 5.3. Exa min ing Lig ht 20 04 with Hands-On Activities Compiled by, Marjorie Anne Wallace Elementary Science Resource Teacher 2002-2005 / NNPS & NSF Coop Agreement. Welcome to a power point presentation on LIGHT.

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How do you LIGHT Up your world ? Part I-Virgi nia SOL 5.3

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How do you light up your world part i virgi nia sol 5 3

How do you LIGHT Up your world ?Part I-Virgi nia SOL 5.3

ExaminingLight2004

with Hands-On Activities

Compiled by, Marjorie Anne Wallace

Elementary Science Resource Teacher

2002-2005 / NNPS & NSF Coop Agreement


Welcome to a power point presentation on light

Welcome to a power point presentation on LIGHT.

  • We will investigate the following:

  • 1. What is light?

  • 2.What are some sources of light around us?

  • 3. What are opaque, transparent, & translucent

    objects?

  • 4. What is a light wave?

  • 5.Are there any hands-on/minds-on activities I can do to learn more?


Light standards

National Science Education Standards

Physical Science: Content Standard B

As a result of the activities in grades

K-4, all students should develop an understanding of light, heat, electricity, and magnetism.

Virginia Standards of Learning 5.3 a-e:

The student will investigate and understand basic characteristics of visible light and how it behaves. (*Key concepts, 5.3a-e, are listed in your teacher curriculum guide)

LIGHT Standards


Light

Light

  • Our primary source of light is the sun.

  • Light travels in straight lines at a speed of 186,000miles per second.

  • *Light waves travel fasterthan sound waves!

  • Light energy from the sun travels through space , reaches earth, and some of it turns to heat energy and warms the earth’s air.

  • Light from the sun also travels to the cells of green plants (producers) and is stored as energy.

  • When light reaches an object, it is absorbed, reflected, or passes through it.


Sensing light

Sensing Light

  • Humans have two light detectors.

  • Do you know what they are called?


How many sources of light can you list and explain

How many sources of Light can you list and explain?

  • SUN=warms air,

    water, and land.

  • Fire=provides heat, light, and cooking fuel.

  • Lightning=

  • Firefly=

  • Flashlight=

  • Light bulb=

  • Laser beams=

  • Optical

    telephone

    fibers=

    *Trafficlights=

*AIMS: Primarily Physics:

Light Sources Activity


Can you answer these 5th grade 2003 sol queries

Can you answer these 5th grade 2003-SOL queries?

  • 1. A person will see a flash of lightning before they hear the thunder that goes with it because?

    *SOL 2003 querie #14/CORE 1 Exam (5.3e)

  • 2.Can you draw a long wavelength and a short wavelength next to it? *SOL2003 queire #9/CORE 1 Exam(5.3a)

  • 3.What scientific tools are used to study light?

    *SOL2003/CORE 2 Exam(5.3b)

  • 4. Can you contrast objects that are transparent, translucent, and opaque?*SOL2003/CORE 2 Exam(5.3d)


Just passing through what happens when light strikes glass or waxed paper or a book

“Just Passing Through:” What happens when light strikes glass? Or waxed paper? Or a book?

  • If light travels through an object it is =transparent

  • If light is blocked by an object and a dark shadow is cast it is= opaque.

  • If some light passes through but not all and a light shadow is present it is=translucent.

*AIMS:Primarily Physics: Just

Passing Through Activity


What happens when light hits these objects

What happens when light hits these objects?

  • Glass of water

  • School bus window

  • Notebook paper

  • Waxed paper

  • Plastic wrap

  • Tissue paper

  • Cardboard

  • Textbook

  • Hand lens…


Transparent objects

Transparent objects:

  • The windows on a school bus,

  • A clear empty glass,

  • A clear window pane,

  • The lenses of some eyeglasses,

  • Clear plastic wrap,

  • The glass on a clock,

  • A hand lens,

  • Colored glass…

  • ALL of these are transparent. Yes, we can see through them because light passes through each of them.


Translucent objects

Translucent objects

  • Thin tissue paper,

  • Waxed paper,

  • Tinted car windows,

  • Frosted glass,

  • Clouds,

  • All of these materials are translucent and allow some light to pass but the light cannot be clearly seen through.


Opaque objects

Opaque objects:

  • Heavy weight paper,

  • Cardboard

  • Aluminum foil,

  • Mirror, bricks, buildings,

  • Your eyelids and hands,

  • Solid wood door,

  • All of these objects are opaque because light cannot pass through them at all.

  • They cast a dark shadow.


Let s find out how light travels

Let’s find out how light travels?

  • Simple Activity: 1 working flashlight

  • 1. Shine a flashlight on a wall.

  • 2. Does light from the flashlight reach the wall? How do you know?

  • 3. What evidence do you have showing light travels in a straight line?

  • 4.Record answers in your science journal

  • 5.Move closer with the flashlight.

  • Any changes? *Write a story about light.


Understanding waves

Understanding Waves

  • The traditional hands-on/minds-on activities:

  • 1. “slinky lab: A Wave Simulation!” as well as

  • 2. “Waves in Action” (visual learner), and

  • 3. “Act It Out!Waves Tall and Small” (kinesthetic learner) activities will help children understand waves better.*Science Museum of Virginia: Light & Sound

    www.smv.mus.va.us

  • *Unitedstreaming movies:”Out of Darkness: An Introduction to Light: Facts About Light.”(auditory & visual learners).*Check with your building technology dept for

    your schools password.


What is light really elec trom agne tic radi atio n wa ves

What is light really?Electromagneticradiationwaves

  • Light waves are three dimensional.

  • Light waves vibrate in all planes around a center line.

  • The waves have high points called “crests.”

  • Waves also have low points called “troughs.”

  • *The distance from one crest to the next crest is called a “wavelength.”

  • *The number of waves passing a given point in one second is called the “frequency.”

wavelength

*A Science Museum of VA:

Light Science Activity


How do you light up your world part i virgi nia sol 5 3

Notice the wavelength is long(Radio waves) and gets shorter (Gamma Rays)


A wave simulation

*Science Museum of VA

A Wave Simulation

Activity/Demo OR

GEMS:”Invisible Universe”

Comparing Wave Makers

A wave simulation:

  • Materials: 1 long spring or rope

  • 1. Teacher and a strong student will hold either end of the coiled spring tightly braced against their body.

  • 2.Teacher will walk away from the student until the spring is loosely stretched between them.

  • 3.Gently snap the spring up and down once to send a wave of energy to the student’s hand. It will bounce back, or reflect, from the stationary end.

  • 4. Point out each wave has a crest (high half) and a trough (low half). Check for understanding


Electromagnetic radiation

*Electromagnetic Radiation

  • Electromagnetic radiation can be described as a stream of photons. Each photon traveling in a wave-like pattern, moving at the speed of light and carrying some amount of energy.

  • The only difference amongst radio waves, visible light, and gamma-rays is the amount of energy of the photons. Radio waves have photons with low energies. Microwaves have a little more energy than radio waves. Gamma-rays and cosmic rays have highest energy waves and are the deadliest.

*Page info from NSTA Conference 2004


How do you light up your world part i virgi nia sol 5 3

Don’t’ forget…longest waves (radio) ..to shortest waves (cosmic)

*Page info from NSAT Conference 2004


How do you light up your world part i virgi nia sol 5 3

Materials:

1. 9 volunteers

2. paper & pencil.

These 2 activities help to explain the electromagnetic spectrum and dispel some of the common misconceptions.

1.Acting It Out! Waves Tall & Small Activity(The electromagnetic family) +2.Scaling the Spectrum Activity

*Science Museum of Virginia

Acting It Out! Activity +

Scaling the Spectrum Activity OR

GEMS: Invisible Universe

Comparing Wave Makers I.


How do you light up your world part i virgi nia sol 5 3

Power point II covers the electromagnetic spectrum!


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