Electromagnetic Spectrum

Physical Science 2nd Semester

ASSIGNMENTPAGE

NUMBERS

DUE DATE HW POINTS EARNED

LAB POINTS EARNED

Vocabulary 1Learning Targets: Electromagnetic Spectrum 2-3

Basic Concepts 4

Wave Speed Problems 5

Light Stations Lab 6-7

Color Guided Reading 8-9

EMS Project 10

Review 12-13

TOTALS

NAME: ____________________________ CLASS PERIOD: ________

TEACHER: ________________

Electromagnetic Spectrum & Light Vocab

Term Definition in own words Picture Term used in a

sentenceRelated word(s)

Electromagnetic Wave

Diffraction

Refraction

Reflection

Speed of light

Particle model

Wave model

Electromagnetic Spectrum (EMS)

Term Wavelength Application/Use

Radio Waves

Microwaves

Infrared

Visible light

UV rays

X-rays

Gamma Rays

1

Answer the following questions to identify your level of understanding:Refer to chapters 17 and 18 in your textbook for assistance.

Learning Targets: 1 – Below Standard 2 – Approaching Standard

3 – At Standard 4 – Above Standard

A: I can make a labeled diagram of the electromagnetic spectrum showing how different regions of the spectrum differ regarding: wavelength, energy, frequency, and uses.

What are the seven areas of the electromagnetic spectrum called?

Describe what happens to the frequency of the electromagnetic spectrum as the wavelength increases.

Give a description of how all seven areas of the EMS are used by people.

Using your knowledge of the EMS, describe why nuclear/gamma radiation can be so harmful to humans in terms of energy.

B: I can describe the difference between electromagnetic and mechanical waves.

Give an example of an EM wave and an example of a Mechanical wave.

What are the two main similarities between EM and Mechanical waves?

What are the two differences between EM and Mechanical waves?

Describe a 3rd difference and similarity between EM and Mechanical waves.

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C: I can use the speed of light to calculate the wavelength or frequency of the different types of waves in the EMS.

What is the speed of light in a vacuum?

What if the frequency of blue light that has a wavelength of 4.5 x 10-7

meters

What is the frequency of an x-ray 3 x 1019 hz.

What does it mean if a stars emission appears to be red-shifted or blue-shifted.

D: I can explain how visible light is related to color.

Why does a pair of blue jeans appear blue?

Why would most people prefer a white shirt on a warm day to a black shirt?

What happens to white light when it passes through a prism? What causes this to happen?

What color does a yellow object appear under a blue light?

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4

Electromagnetic Radiation Basic Concepts1. Write three sentences describing how the wave particle duality of light (how light can be explained as both a

wave and a particle). Include when it is appropriate to use each type of description.

2. How are electromagnetic waves produced?

3. What happens to light as it travels farther from the source?

4. What types of mediums can electromagnetic waves travel through? How does the speed change through the different mediums?

5. What is the speed of light?

6. How are different types of electromagnetic radiation classified?

7. What does energy correspond to with electromagnetic radiation?

8. How do electromagnetic radiation waves differ from mechanical waves? List at least 2 ways. How are they the same? List at least 2 ways.

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Electromagnetic Wave Speed Problems

C = speed of light = 3.00x108 m/sλ = wavelength (m)f= frequency (Hz)

Answer the following questions using the triangle above. Don’t forget the 4-step method.

1. A radio wave has a wavelength of 150 m. What is its frequency?

2. A microwave has a frequency of 300,000,000 Hz. What is its wavelength?

3. The color red has a wavelength of 6.10x10-7m. What is its frequency?

4. Violet light has the shortest wavelength of the visible light. It can have a frequency of 7.0 x 1014 Hz. Calculate its wavelength.

5. Ultraviolet rays can cause damage to the skin if left exposed for too long. If an ultraviolet ray has a wavelength of 10-8 m, what would its frequency be?

6. Gamma rays are the highest energy rays. The ray that hit the Hulk and gave him his superpowers had a frequency of 1020 Hz. What was its wavelength?

6

ƒ

λ

c

λ

Light Stations Lab QuestionsPhet: Color Analysis:

1. What are the 3 primary colors of light? What color do you see when all 3 primary colors are fully present?

2. Describe the colors seen if only 2 of the 3 primary colors are fully present. These 3 colors are called secondary colors of light.

3. Draw a triple Venn diagram showing how the 3 primary colors of light combine to form the other colors.

4. Explain how the filter affects how you see light.

Mirror Mirror Analysis:

1. How did your image compare to the original?

2. What did you notice about the reflected image?

3. Why does the reflected image behave the way it does?

Crazy Spoons Analysis:

1. What do you see when you look at the back of the spoon?

2. What affect did moving the spoon away from your face have on the image?

3. What do you see when you look at the front of the spoon?

4. What effect did moving the spoon away from your face have on the image?

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Bent Pencil Analysis:

1. Draw a top down view of the pencil in the water

2. Draw a side view of the pencil in the water

3. What happens to the appearance of the pencil when it crosses from the air to the water?

4. Why does the appearance change?

Magic Penny Analysis:

1. What happens when you pour the water into the bowl?

2. Draw a diagram showing the bowl, the penny and your eye to explains how this works

3. What is the name of the property that allows you to see the penny when water is added?

Spectroscopes Analysis:

1. Describe what you see in the spectroscope when you look outside.

2. Describe what you see in the spectroscope when you look at the classroom lights, and draw a labeled diagram to help your description.

Simple Lenses Analysis:

1. Describe how each viewing object looks through the convex lens.

2. Describe how each viewing object looks through the concave lens.

3. Describe how each viewing object looks through the both lenses at the same time.

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4. Come up with at least 4 objects that use lenses, and predict which type of lens each object uses.

9

10

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As you read yesterday, the full range of frequencies of electromagnetic radiation is called the electromagnetic spectrum. Today, you will be designing your own electromagnetic spectrum….yeah Arts & Crafts!!!

Your electromagnetic spectrum must include the following:

All seven wave types clearly labeled. A colored picture that illustrates an example of each type of wave. List 3 facts for each type of wave (not including something listed in another bullet) A picture of how the wavelength and frequency change across the spectrum Show how energy changes across the spectrum Write a Summary including what you learned, two differences between mechanical and

EM waves, and why this information is important (should be 3-4 sentences)You may use a variety of sources to accomplish this task such as:

Your textbook

The Internet

Selected library books

Plagiarism will result in a zero on this project.

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Name: Class Period:Component 4/4 3/4 2/4 1/4All seven wave types clearly labeled

All wave types clearly labeled

Most wave types clearly labeled

Some wave types clearly labeled

Wave types are not clearly labeled

Color illustration of each wave type

All wave types have a color illustration

Most wave types have a color illustration

Some wave types have a color illustration

Wave types do not have color illustration

3 facts for each wave type

All wave types have accurate information provided with 3 facts

Some wave types have accurate information provided with 3 facts

Few wave types have accurate information provided with 3 facts

Wave types do not have accurate information provided with 3 facts

Diagram how wavelength and frequency changes across the spectrum

All wave types clearly show accurate changes in wavelength and frequency

Most wave types clearly show accurate changes in wavelength and frequency

Some wave types clearly show accurate changes in wavelength and frequency

Wave types do not show accurate changes in wavelength and frequency

Diagram how the energy level changes across the spectrum

All wave types clearly show accurate changes in energy level

Most wave types clearly show accurate changes in energy level

Some wave types clearly show accurate changes in energy level

Wave types do not clearly show accurate changes in energy level

Summary Contains 3-4 sentences with proper grammar and punctuation. Includes what you learned, 2

Contains 3-4 sentences with proper grammar and punctuation. Includes two of the following: what you

Contains less than 3 sentences without proper grammar and punctuation. Includes two of the following: what you

Does not use proper grammar/punctuation and includes only one of the following: what you learned, 2 differences between

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differences between mechanical and EM waves, and why the information is important.

learned, 2 differences between mechanical and EM waves, and why the information is important.

learned, 2 differences between mechanical and EM waves, and why the information is important.

mechanical and EM waves, and why the information is important.

Total: /24

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EMS & Light Review 1. What are the 2 types of “fields” that make up an electromagnetic (EM) wave?

2. What type of wave are all EM waves?

3. What is the speed of light?

4. What is one difference between mechanical waves and EM waves?

5. What is another difference between mechanical waves and EM waves?

6. What is a third difference between mechanical waves and EM waves?

7. What happens to the intensity of light as the distance from the source increases?

8. Name 5 types of the electromagnetic spectrum (EMS).

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9. What type of wave has the longest wavelength?

10.What type of wave carries the most energy?

11.Visible light is located between what 2 types of waves on the EMS?

12.Within the visible light part of the spectrum, which color has the highest frequency?

13.Give an example of a transparent object.

14.Give an example of a translucent object.

15.Give an example of an opaque object.

16.Which type of material lets the most light pass through it?

17.What property of light caused the “Magical Penny” to rise in the bowl in the light stations lab?

18.What are the primary colors of light?

19.What are the primary colors of pigments?

20.What are the secondary colors of light?

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21.Why do blue things appear blue? Include a description of absorbed vs. reflected light.

22.If green light shines on a red wall, what color would the wall appear?

23.What happens when white light shines onto a prism?

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