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    Week 9 Grade 7

    Uploaded by

    mkraemer
    This document provides the homework schedule and assignments for 7th grade science class over the course of one week. It includes learning about electromagnetic radiation, the electromagnetic spectrum, properties of light such as reflection, absorption, and transmission. Students are asked to complete reading assignments from their textbooks, participate in class discussions and activities about these topics, and study for daily quizzes. The schedule covers electromagnetic waves, the visible light spectrum, how light interacts with different materials, and where light comes from like the sun and stars.

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    © All Rights Reserved
    Download as PPT, PDF, TXT or read online from Scribd

    Week 9 Grade 7

    Uploaded by

    mkraemer
    2K views40 pages
    This document provides the homework schedule and assignments for 7th grade science class over the course of one week. It includes learning about electromagnetic radiation, the electromagnetic spectrum, properties of light such as reflection, absorption, and transmission. Students are asked to complete reading assignments from their textbooks, participate in class discussions and activities about these topics, and study for daily quizzes. The schedule covers electromagnetic waves, the visible light spectrum, how light interacts with different materials, and where light comes from like the sun and stars.

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    This document provides the homework schedule and assignments for 7th grade science class over the course of one week. It includes learning about electromagnetic radiation, the electromagnetic spectrum, properties of light such as reflection, absorption, and transmission. Students are asked to complete reading assignments from their textbooks, participate in class discussions and activities about these topics, and study for daily quizzes. The schedule covers electromagnetic waves, the visible light spectrum, how light interacts with different materials, and where light comes from like the sun and stars.

    Copyright:

    © All Rights Reserved
    Download as PPT, PDF, TXT or read online from Scribd
    Download as ppt, pdf, or txt
    2K views40 pages

    Week 9 Grade 7

    Uploaded by

    mkraemer
    This document provides the homework schedule and assignments for 7th grade science class over the course of one week. It includes learning about electromagnetic radiation, the electromagnetic spectrum, properties of light such as reflection, absorption, and transmission. Students are asked to complete reading assignments from their textbooks, participate in class discussions and activities about these topics, and study for daily quizzes. The schedule covers electromagnetic waves, the visible light spectrum, how light interacts with different materials, and where light comes from like the sun and stars.

    Copyright:

    © All Rights Reserved
    Download as PPT, PDF, TXT or read online from Scribd
    Download as ppt, pdf, or txt
    of 40
    At a glance
    Powered by AI
    The key takeaways are that light comes from atoms emitting energy as electrons jump between orbits, and the electromagnetic spectrum describes different types of electromagnetic waves including visible light, radio waves, microwaves, etc.

    Light from the sun reaches Earth as electromagnetic radiation.

    Electromagnetic radiation is energy that electromagnetic waves transfer through matter or empty space at the speed of light.

    Grade 7 HOMEWORK

    WEEK 9: 10/12-10/14

    Pages 311-321

    Wednesday 10/12/16
    TO DO: QUIETLY GET ISN NOTEBOOK
    2. Get your Textbook and new Sci Spot handout

    TODAYS Sci-Spot Question:

    7TH Grade: What is: Electromagnetic


    Radiation?
    Find Book Page
    Video Clip-What-is-light STUDY

    What is EM Radiation?
    Class Discussion: Use Your Text Book Page 317 to
    Brainstorm with your shoulder partners-Think (2min) and
    Share Your answers to questions 1 and 2.
    1. How does Suns energy arrive on Earth?
    Suns energy arrives on Earth as EM Radiation.
    2. What is EM Radiation?
    Energy that Electromagnetic Waves transfer through
    matter or empty space at speed of light.
    3. Which part of EM Radiation is visible?
    Visible Light/ White Light, all other wavelengths are nonvisible.

    BEFORE YOU ANSWER WHICH COLOR BATHING SUIT WOULD BE


    MOST VISIBLE THE DEEPER YOU DIVE:

    Consider this

    Thursday 10/13/16

    TO DO: QUIETLY GET ISN NOTEBOOK


    2. TAKE A SEAT- TEXTBOOK WILL BE BROUGHT TO YOU

    TODAYS Sci-Spot Question:

    7TH Grade: Explain the term:


    Electromagnetic Spectrum

    Tomorrow is Spot Check please study your sci


    spots !

    Electromagnetic Spectrum

    EM Spectrum Notes
    In your notebook for each section, using your textbook fill
    out this table.
    Radio waves
    Microwaves
    Infrared
    Visible Light
    Ultraviolet Light
    X-rays
    Gamma rays

    Electromagnetic Spectrum
    EM Spectrum is made up of Energy and Visible Light
    that are manifested as Electromagnetic Waves of
    different wavelengths.
    Hands up who is familiar with:
    1.Radio Waves
    2. Microwaves
    3. UV Rays
    4. X Rays
    Electromagnetic Spectrum Song
    EM wave is a disturbance that involves transfer of electric
    and magnetic energy-aka a movement of charged
    particles which have electric and magnetic fields around
    them.

    Wave Activity Pick a Wave


    TIMER: 5 MIN

    Stand Up Hand up Pair Up two times, first with


    same gender than with opposite gender. Pick a
    Letter from the box: R (radio waves), M
    (microwaves), I (Infrared), U (Ultraviolet), X (X
    Rays), G (Gamma Rays)
    We are going to make a class wave, in order from the longest
    wavelength to the shortest. Each group will stand up and create a
    wave with hands modeling the slow and large wave (RADIO) for
    example or quick small fast wave (MICRO) depending on the wave
    type, be creative how your group stands up and performs a wave.
    Teacher will be Visible Light Wavelength. We will have a test trial run
    and a final run. Be Creative and Have Fun!

    Friday 10/14/16
    TO DO: QUIETLY GET ISN NOTEBOOK
    2. GET YOUR TEXTBOOK AND TAKE A SEAT

    TODAYS Sci-Spot Question:

    Based on what you know from


    experience explain which car will be
    get hotter on a hot day: black or
    white, and why?
    TODAY is a Spot Check, review your notes
    quietly!

    TIMER: 8MIN
    Use Your Textbook to
    Complete

    Which Waves get to Earth from


    Sun?
    The Earths atmosphere stops
    most types of EM radiation from
    Reaching Earths surface.
    This illustration shows how far
    Into the atmosphere different
    Parts of EM Spectrum can go,
    before being absorbed.
    Only portions of radio and visible
    Light reach the surface.
    (Credit: STScl/JHU/NASA)

    Absorption and Color


    Why is a black car hotter than a white car
    in the summer?
    Remember light is energy. Heat is another
    form of energy.
    A white car reflects all wavelengths of
    light.
    A black car absorbs all wavelengths of
    light, absorbing the energy and turning it
    to heat.

    How do we see light?


    We see light as color and
    brightness.
    What is Light?
    Its actually electromagnetic
    radiation: Part electric & magnetic.
    How does Light Flow?
    *Flows in straight line. (Radiates)
    Where does Light come from?

    Where does light come from?


    The Sun and the Stars.
    But how do they make light?
    It all starts with ATOMS: A nucleus surrounded by
    electrons that orbit. If you add energy to an atom (heat it
    up), the electrons will jump to bigger orbits.
    When atom cools, electrons jump back to original orbits.
    As they jump back, they emit light, a form of energy.

    Speed of Light
    Discuss: How fast is Speed of Light?
    Light travels at 300,000,000 m/sec
    How long does it take for a light wave or a
    photon) to travel from the Sun to the Earth?
    It takes 8 min for Light to reach Earth.
    Guess how long it takes for light from Moon
    to reach Earth?
    It takes 1 second for light reflected off the
    moon to reach the Earth.

    Color of Light
    Each electron that jumps back emits one photon
    of light
    What color is this light?
    Depends on how big the jump between orbits
    was.
    The bigger the jump, the higher the energy.
    The energy/frequency determines color;
    Why does blue photon has more energy than a
    red?
    Spin all the colors together, what do you see?
    Demonstration of the Color Wheel

    Light as Particle
    A photon is like a particle. What mass you
    think a photon has?
    Photon has no mass.
    Think of how a photon can be compared
    to a grain of sand?
    We see so many photons at the same
    time its like seeing all the sand on a
    beach; we dont notice the single grains.

    Brainstorm: How do Photons of Light


    Act Together?
    Photons of light act like a WAVE.
    Lets review: What are characteristics of a
    Wave?
    A wave has a wavelength, a speed and a
    frequency.
    Brainstorm: Does Light travel at different
    speeds? Does Light Need a Medium to travel?
    All light travels same speed (in vacuum) but at
    different speeds through solids<liquids<gases;
    doesnt need a medium to travel through.

    Sound Wave
    Does Sound Need a Medium to travel
    through?
    Open book on page 337.
    Look at the figure with speedometers,
    which medium sound travels fastest?
    Slowest?
    How does this compare to light wave?

    Speed of Light
    Discuss: How fast is Speed of Light?
    Light travels at 300,000,000 m/sec
    How long does it take for a light wave or a
    photon) to travel from the Sun to the Earth?
    It takes 8 min for Light to reach Earth.
    Guess how long it takes for light from Moon
    to reach Earth?
    It takes 1 second for light reflected off the
    moon to reach the Earth.

    Think Pair Share in Groups


    Brainstorm: How does slowing and
    speeding of light as it passes through
    different mediums compare to
    Wading/Walking?
    Which could you do faster: walk across
    the classroom or wade the same
    distance in lake? Why?

    Light and Matter


    When light hits something (air, glass, a green
    wall, a black dress), it may be:
    *Transmitted (if the matter is transparent)
    *Reflected or scattered (off mirror or raindrops)
    *Absorbed (off a black velvet dress)
    * Often its some combination. Take a simple
    piece of paper: you can see some light through,
    white reflects, black print absorbs.

    Draw these diagrams in your Scientific Notebooks.


    Take 8 min to finish this slide. Stopwatch
    Thewavescanpass

    throughtheobject

    Thewavescanbereflectedofftheobject.

    Thewavescanbescatteredofftheobject.

    Thewavescanbeabsorbedbytheobject.

    Thewavescanberefractedthroughtheobject.

    Light Transmission
    Transparent materials transmit light, like
    windows.
    Remember all light has same Speed in
    Vacuum, but Different frequencies have
    different speeds in DIFFERENT materials.
    Different frequencies causes a prism to
    separate the colors.
    Colored glass or plastic only transmits the
    color that it is; it absorbs or reflects the other
    colors.

    Light Absorption
    Study Jams Light Video

    Give White Boards for Quiz Activity.

    Reflection and Color


    Remember, white light contains all colors (a
    rainbow or prism separates them so we can see
    this)
    Why does a green wall look green in the
    sunshine?
    Why does it look different when its in the
    shade?
    Well, in the dark, its black. No light reflects off
    it.
    A green wall reflects only green light; it absorbs
    all the other colors.

    Absorption and Color


    Why is a black car hotter than a white car
    in the summer?
    Remember light is energy. Heat is another
    form of energy.
    A white car reflects all wavelengths of
    light.
    A black car absorbs all wavelengths of
    light, absorbing the energy and turning it
    to heat.

    Light Transmission
    Transparent materials transmit light, like
    windows.
    Remember all light has same Speed in Vacuum?
    Different frequencies have different speeds in
    transparent materials how does that affect
    colors?
    Different frequencies causes a prism to separate
    the colors.
    Colored glass or plastic only transmits the color
    that it is; it absorbs or reflects the other colors.

    Using Light to Study the Stars


    Astronomers collect energy from the stars with a telescope
    Visible light
    Infrared light
    Radio waves, etc.

    Each atom has a special pattern of light frequencies like a fingerprint.


    The fingerprint of frequencies will be shifted if the star is moving away
    or toward us (like the sound of a freight train)
    The temperature of the Star can be determined from the color of the
    Star.

    Here a picture of the ring nebula in infrared light.

    Where does light come from?


    The Sun and the Stars.
    But how do they make light?
    It all starts with ATOMS: A nucleus
    surrounded by electrons that orbit.
    Like the planets in the solar system,
    electrons stay in the same orbit, unless
    (Brainstorm how planets got into their
    orbits? 1min)

    Where does light come from?


    If you add energy to an atom (heat it up),
    the electrons will jump to bigger orbits.
    When atom cools, electrons jump back to
    original orbits.
    As they jump back, they emit light, a form of
    energy.
    Cycle: Again electrons get kicked into a
    different orbit
    This doesnt happen very often in solar
    systems, but it does in atoms.

    Happy Halloween
    Tickets out for Prizes
    Agenda:
    7th Grade Continue Unit on Light

    Picture of the ring nebula in visible light.

    Many nebulae or stars forming regions form the gravitational collapse of gas
    in the interstellar medium or ISM. As the material collapses under its own
    weight, massive stars may form in the center, and their ultraviolet radiation
    ionizes the surrounding gas, making it visible at optical wavelengths

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