Electromagnetic SpectrumTEK: 8.8C- Explore how different wavelengths of the EM spectrum, such as light and radio waves, are used to gain information about the distances and properties of components of the universe. Marzano’s Word: Electromagnetic Spectrum

Electromagnetic SpectrumTEK: 8.8C- Explore how different wavelengths of the EM spectrum, such as light and radio waves, are used to gain information about the distances and properties of components of the universe. Marzano’s Word: Electromagnetic Spectrum

Day 1- MondayNovember 14

Today you will need: JOurnal, pen/pencil

When you come in, turn to the next empty page in your journal and create a title

page for “Universe”

Coming Up Next: *Vocabulary Due: Friday after

Thanksgiving Break

*EM SPectrum TEst: THis Friday

Daily ObjectiveLearning Target: Differentiate between types of wavelengths and frequencies of the EM Spectrum.

Success Criteria: I understand that red light has longer wavelengths than blue light.

Language Objective: I will write using newly acquired vocabulary.

Today’s GoalI will understand that red

light has longer wavelengths than blue

light.

Warm UpWrite 1 sentence describing the motion of the people in the

stands.

Marzano Word

Electromagnetic Spectrum

Engage

Spectroscopes!

Class Discussion1. Where do the different colors come from?

2. What are some examples of patterns you can observe?

3. Where have you seen light separated into the colors of the visible spectrum before?

ExplainWhat do a radio, a heat lamp, the sun, and an X-ray machine have in common? They are all types of light waves that can be found on the Electromagnetic Spectrum. Electromagnetic waves have two important parts: Frequency and wavelength.

What do you think?What is the relationship between wavelength

and frequency?

As wavelength ______, frequency _______.

ExplainThere are 7 types of light waves on the

EM Spectrum.

Humans can only see 1 type but we use them all to learn more about the

Universe.

Explain: Copy the

underlined information on the following

slides

Radio Waves� E-M waves with the LOWEST frequency and the

longest wavelength

� Least amount of energy

� AM or FM radio and old TV

The above image shows the Carbon Monoxide (CO) gases in our Milky Way galaxy.

Every day life and science use

Micro Waves� Higher frequency and shorter wavelength than radio

� Used to heat food, by causing molecules to moves rapidly

� Used in weather radar systems

because they can penetrate fog,

Haze, and rain.

Every day life and science use

Infrared Waves

� E-M waves used to detect heat

� Ex: heat from sun, campfire, and you, used in remote controls

� Satellites in space use infrared cameras to gather information about distant galaxies, stars and clouds of dust and gas.

�

Every day life and science use

Visible Light� E-M waves that have a high enough frequency and short

enough wavelength to glow

� Detectable with eyes

� ROYGBIV = colors

� Used in space when capturing satellite images

of Earth and other objects in space

� Red = longest wavelength= lowest frequency

� Violet = shortest wavelength = highest frequency

The Crab -Nebula

Every day life and science use

Ultraviolet � Higher frequency and shorter wavelength than

visible

� Good source of Vitamin D

� Can penetrate top layer of skin

� Too much exposure to UV waves = sunburn!

� We use Ultraviolet light to

gather data about the

temperature of objects

in space. Photo of the Earth reflecting the UV rays of the sun. Taken by a spectrograph camera left on the

moon by Apollo 16.

Sun

Every day life and science use

X-Ray� Enough energy to go right through skin and

muscle, but not bone

� Help doctors detect injuries and diseases

� We can use x-ray detectors to learn about things in space that are hard to detect.

First x-ray ever taken.

Supernova Remnant (leftover by a star that exploded)

Every day life and science use

Gamma� Waves with the highest frequency and greatest energy

� Very dangerous but can kill bacteria and cancer cells

� Used to detect high energy occurrences such as solar flares, supernovas, neutron stars, black holes, and active galaxies.

Taken by Egret Gamma Ray satellite. This “all sky” picture shows gamma rays in all of the universe.

Every day life and science use

The spectrum can go from big to small

The spectrum can go from small to big

Visual Vocabulary

Write:If you are an astronomer, which of the types of waves would be most useful while studying the universe? Explain

your answer.

Electromagnetic SpectrumTEK: 8.8C- Explore how different wavelengths of the EM spectrum, such as light and radio waves, are used to gain information about the distances and properties of components of the universe. Marzano’s Word: Electromagnetic Spectrum

Day 2- TuesdayNovember 15

Today you will need: JOurnal, pen/pencil, cell

Phone/tabletUse the markers at your table to decorate

your “Universe” title page.

Coming Up Next: *Vocabulary Due: Friday after

Thanksgiving Break

*EM SPectrum TEst: THis Friday

Daily ObjectiveLearning Target: Today we will learn how to identify elements through spectral analysis.

Success Criteria: I will be able to identify the elements found within stars.

Language Objective: I will work with a cooperative group to identify stars.

Today’s GoalI will be able to identify

which elements are found in different stars.

Warm UpColor and label the bands of visible light on the

spectrum.

Marzano Word

Electromagnetic Spectrum

Spectral Analysis Lab

Go next door into Ms. Harris’ room.

Electromagnetic SpectrumTEK: 8.8E- Research how scientific data are used as evidence to develop scientific theories to describe the origin of the Universe.Marzano’s Word: Electromagnetic Spectrum

Day 3- WednesdayNovember 16

Warm UpYou and your partner will sort the cards and place the

words in the correct square.

Hubble Video

Electromagnetic SpectrumTEK: 8.8E- Research how scientific data are used as evidence to develop scientific theories to describe the origin of the Universe.Marzano’s Word: Electromagnetic Spectrum

Day 3- ThursdayNovember 17

Warm Up

Daily ObjectiveLearning Target: Today we will learn how redshift and blueshift provide evidence of the Big bang Theory.

Success Criteria: I understand that redshifting galaxies are moving away from us.

Language Objective: I will write using newly acquired vocabulary.

Red shift, Blue ShiftMovement makes waves change

Doppler Effect

Explaining the Doppler Effect

How would this look in space?

Red Shift Blue Shift

Moving Stars don’t actually look completely red or blue, their colors just shift a little towards the

red or blue side of the color spectrum compared to where they were before.

How would this look on a spectral chart?

Let’s Practice

Let’s PracticeA star is observed 3 times, below are the spectral patterns

documented each time. Is the star moving towards or away from Earth?

Marzano WordElectromagnetic Spectrum

ReCapYou and your partner will sort the cards and place the

words in the correct square.

Fingerprinting the Stars

In Black and White

Big Bang Balloon Lab1. Inflate the balloon given to you slightly. Place two dots on

the balloon, about 2-3 inches apart. 2. Draw a wave connecting the two dots. 3. Inflate the balloon further and record your observations in

your journal, using the following sentence stem: a. As the dots moved away from each other, the

wavelength _______________. 4. Deflate the balloon slightly. Record your observations in

your journal, using the following sentence stem. a. As the dots moved closer to each other, the wavelength

____________________.

Big Bang Balloon LabPartner Talk

Partner A- Imagine that Location A on the balloon was the Milky Way and the other locations are distant galaxies. How would describe the motion of the other galaxies.

Partner B- How do scientist know if other galaxies in the Universe are moving farther away from us?

Red shift, Blue ShiftGet out your “EM Spectrum ”

paper from Tuesday

Red shift, Blue ShiftPartner Talk

Partner A, Partner B

Partner A: Which color of light has the shortest wavelength?

30 seconds to think- 30 seconds to talk

Speak in complete sentences!

Red shift, Blue ShiftPartner Talk

Partner B: Which color has the lowest frequency?

30 seconds to think- 30 seconds to talk

Speak in complete sentences!

Red shift, Blue ShiftPartner Talk

Partner A: Which color has the greatest energy?

30 seconds to think- 30 seconds to talk

Speak in complete sentences!

Red shift, Blue ShiftPartner Talk

Work Together: How might light be used to determine the energy of a wave?

Be ready to explain!

Show You Know

Let’s PracticeBlueshift or Redshift?

Let’s PracticePicture A represents the initial wavelength of light observed of distant star.

1) Which picture would represent a “blue-shift”? Why?

2) Which picture would represent a “red-shift”? Why?

Let’s Practice

The spectral data for a star is shown above. The “after” data was taken 10 years after the “before” data.

1) What can we conclude from this data? (What color would the wave be?)

Electromagnetic SpectrumTEK: 8.8E- Research how scientific data are used as evidence to develop scientific theories to describe the origin of the Universe.Marzano’s Word: Electromagnetic Spectrum

Day 4- FridayNovember 18

Warm UpWhy do most objects in the Universe look Red-Shifted to

us from Earth?

Marzano WordElectromagnetic Spectrum

Big Bang Theory

Big Bang Theory Explained

Big Bang Misconceptions NOT AN EXPLOSION! It is an expansion.

It is also not a collision of stars! Prior to the “Big Bang”, scientists believe there was nothing. Not

space, not time, not particles, not atoms, not planets, not stars...nothing.

Guided Reading

Tear out page 310 of your book.

Be ready to make your annotations!

Origin and Expansion of The Universe

The universe started out as a dense and hot ball, then expanded, cooled, and gave us stars. Then, gravity started pulling the

stars into galaxies.

Doppler Shift

1. When light travels away from you, what happens to the wavelength?

2. What happens to the light as our galaxy is expanding?