Science Grade 10 Quarter 2 Module 1 Electromagnetic Waves PDF

Republic of the Philippines Department of Education Regional Office IX, Zamboanga Peninsula 10 Z est for P rogress Z P eal of artnership SCIENCE Grade10...

Republic of the Philippines Department of Education Regional Office IX, Zamboanga Peninsula 10 Z est for P rogress Z P eal of artnership SCIENCE Grade10 Quarter 2 – Module 1 ELECTROMAGNETIC WAVES Name of Learner: Grade & Section: Name of School: Module Electromagnetic Waves 1 What I Need to Know When you were in Grade 7, you were able to demonstrate understanding of the characteristics of light by explaining color and intensity of light in terms of its wave characteristics. In Grade 8, you grasped the knowledge about some of properties and characteristics of light by explaining the hierarchy of colors in relation to the energy of visible light. This time, it will be all about comparing the relative wavelengths of different forms of electromagnetic waves. Have you ever tried sending messages, cooking in a microwave, listening radio or watching TV today? Have you ever tried to ask yourself “What makes this possible?”. As you go along this module, you will able to answer that BIG question. Content Standard The different regions of electromagnetic Spectrum Most Essential Learning Competency (MELC) Compare the relative wavelengths of different forms of electromagnetic wave (S10FE 11a-b-470) Specific Objectives: a. Trace the development of the electromagnetic wave theory b. Describe how electromagnetic wave is produced and propagated. 2  What’s In Let us recall the dispersion of light that you learned in Grade 8. This is when white light splits into many colors as it passes through a prism, thus creating a rainbow. Trivia: A rainbow is caused by sunlight and atmospheric conditions. Light enters a water droplet, slowing down and bending as it goes from air to denser water. The light reflects off the inside of the droplet, separating into its component wavelengths--or colors. When light exits the droplet, it makes a rainbow. (Source: https://scijinks.gov/rainbow/#:~:text=A%20rainbow%20is%20caused%20by,droplet%2C%20it%20makes%20a%20rainbow.) ACTIVITY 1: SHINE LIKE RAINBOW ! Score: 12 Directions: In the left box below, write the 7 colors of the rainbow arranged from top to bottom in the space provided (0.5 point each). In the right box below, write T if the statement about energy, frequency and wavelength is true and F if the statement is false (1 point each). 1. Red light has the highest frequency. 2. Violet has the highest energy. 1. RED 3. Violet has the longest wavelength. 2. 4. The higher the frequency of light, the greater the energy. 3. YELLOW 4. 5. The longer the wavelength, the lesser the frequency of 5. light. 6. INDIGO 6. Wavelength is directly proportional to frequency. 7. 7. Frequency is inversely proportional to energy. 8. Wavelength is inversely proportional to energy. 3  What’s New Score: ACTIVITY 2A: MATCH ME! Directions: Match the scientists given below with their contributions. Write the letter of the correct answer in the space provided before each number. Scientists Contributions 1.Ampere a. Contributed in developing equations that showed the relationship of electricity and magnetism _2. Faraday b. Showed experimental evidence of electromagnetic waves and their link to light _3. Hertz c. Demonstrated the magnetic effect based on the direction of current _4. Maxwell d. Formulated the principle behind electromagnetic induction _5. Oersted e. Showed how a current-carrying wire behaves like a magnet ACTIVITY 2B. LET’S TALK ABOUT EM! Score: Directions: Write T if the statement is True, F if the statement is false. (1 point each) _1. Electromagnetic waves transfer energy through vacuum. 2. A wave is a disturbance that transfers energy 3. Most EM waves are invisible and undetectable. 4. The electric field and the magnetic field oscillate parallel to each other 5. As wavelength increases, the frequency of wave also increases. 4  What Is It In the previous activity, you matched the scientists with their contributions on the discoveries of electricity and magnetism and the development of Electromagnetic wave theory. Hoping that you got them right. Take a look at this. Formulated the principle behind electromagnetic induction. Source:en.wikipedia.org/wiki/Michael_ Faraday Showed how a current Michael Faraday carrying wire behaves like 1791-1867 a magnet. Source:aps.org/publications/apsne w/200807/physicshistory.cfm Hans Christian Oersted Contributed in developing 1777--1851 equations that showed the relationship of electricity and magnetism. Source:thoughtco.com/james-clerk- maxwell-inventor1991689. James Clerk Maxwell 1831-1879 Showed experimental evidence of electromagnetic waves and their link to light. Source:https://en.wikipedia.org/wiki/He Demonstrated the inrich_Hertz magnetic effect based on Heinrich Hertz the direction of current. Source:https://www.britannica.com/biograph 1857--1894 y/AndreMarie-Ampere/media/1/21416/8352 Andre-Marie Ampere 1775-1836 5 Electromagnetic Waves Accelerating electrons produce electromagnetic (EM) waves. These waves are a combination of electric and magnetic fields. A changing magnetic field produces an electric field and a changing electric field produces a magnetic field. As accelerated electrons produce an electric field of a wave, the varying electric field produces the wave’s magnetic field. Both the electric field and the magnetic field oscillate perpendicular to each other and to the direction of the propagating wave. Therefore, electromagnetic waves are transverse waves, as shown in Figure 1. Figure 1. Electromagnetic Wave Propagation Among the examples of EM waves are radiowaves, microwaves, infrared, visible light, ultraviolet, x-rays and gamma rays. All EM waves travel at a speed of 3 X 108 m/s in a vacuum and denoted as c, the speed of light. Since all the electromagnetic waves have the same speed, as wavelength decreases, the frequency of the wave increases as expressed in the equation v=λf where: v is the wave speed, or c (speed of light) expressed in meter per second, f is the frequency expressed in Hertz λ is the wavelength expressed in meters Speed All electromagnetic waves travel at a speed of 300,000 km/s (3 x 108m/s) in a vacuum of space. However, when electromagnetic waves travel through matter, they slow down. The speed of the wave depends upon the material they travel through. 6 Electromagnetic waves usually travel the slowest in solids and the fastest in gases, as shown in Table 1 below. Material Speed (Km/s) Vacuum 300,000 Air Slightly less than 300,000 Water 226,000 Glass 200,000 Diamond 124,000 Table 1. Speed of Visible Light Frequency The frequency, represented by the Greek letter nu (ν), is the number of waves that pass a certain point in a specified amount of time. Typically, frequency is measured in units of cycles per second or waves per second. One wave per second is also called a Hertz (Hz) and in SI units is a reciprocal second (s−1). Example Problem 1: (Assume that the waves propagate in a vacuum.) 1. What is the frequency of radio waves with wavelength of 20 m? Given: v= c = 3 X 108 m/s λ= 20 m f= ? Equation: v=c=λf Solution: f=c/λ = 3 X108 m/s 20 m = 1.5 X 107 Hz Wavelength Wavelength is defined as the distance measured from one crest of a wave to the next crest or from one through to the second through. A wave cycle consists of one complete wave—starting at the zero point, going up to a wave crest, going back down to a wave trough, and back to the zero point again. The wavelength of a wave is the Figure 2. The wavelength 7 distance between any two corresponding points on adjacent waves. It is easiest to visualize the wavelength of a wave as the distance from one wave crest to the next. In an equation, wavelength is represented by the Greek letter lambda (λ). Depending on the type of wave, wavelength can be measured in meters, centimeters, or nanometers (1 m = 109 nm). To find wavelength ( λ ), use this equation v=λf Example Problem 2: 1. What is the wavelength of an electromagnetic wave that has a frequency of 4.95×1014 Hz? Given : f = 4.95 x 1014 Hz Solution: v= c=3.00 x 108 m/s λ=v/f λ =? = 3.00 x 108 m/s / Equation: 4.95 x 1014Hz v=λf = 6.06×10-7m Score: What’s More 10 ACTIVITY 3: SOLVE ME! Directions: Solve the problem. Write all your solutions and answers on the space provided after the question. 1. Calculate the wavelength of a photon that has a frequency of 2.5 x 10 12Hz. (5 points). 2. What is the frequency of an electromagnetic wave having a wavelength of 300,000 km? (5 points) 8  What I Have Learned Score: 10 ACTIVITY 4: FILL ME! Direction: Complete the statements below by filling in with correct word(s) found in the box. (1 point each) magnetic field Maxwell perpendicular electric field Faraday transverse electromagnetic wave theory vacuum electromagnetic waves 3x108m/s 1. A changing magnetic field produces an. 2. A changing electric field produces a _ 3. The successive production of electric and magnetic field results to the creation of wave. 4-5. The electric and magnetic fields vibrate _to each other to the direction the wave travels so it is a wave. 6. James Clerk Maxwell formulated the - which says that an oscillating electric current should be capable of radiating energy in the form of electromagnetic waves. 7. The one who formulated the principle behind electromagnetic induction was _. 8. contributed in developing equations showing the relationship of electricity and magnetism. 9-10. EM waves can travel through a with a speed value of. 9  What I Can Do Score: ACTIVITY 5: COMPLETE ME! 10 Directions: Complete the concept map (1 point each) Distance SI unit between wave crests Defined as Defined as Can travel through Have properties of Transfers kinetic energy in form of Range is called Defined as Electromagnetic Spectrum SI unit radiation Hertz which includes X-rays 10  Assessment Score: 10 MULTIPLE CHOICE Directions: Identify the letter of the choice that best completes the statement or answers the question. Write the letter on the space provided before each number. 1 Who formulated the principle behind electromagnetic induction? a. Faraday b. Hertz c. Ampere d. Maxwell 2. In the electromagnetic wave, the direction of the propagation of the wave is. a. always to the right b. always to the left c. parallel to electric and magnetic field directions d. perpendicular to the electric and magnetic field directions 3. Which of the following is the contribution of Oersted in the development of Electromagnetic Wave Theory? a. demonstrated the magnetic effect based on the direction of current b. showed how a current carrying wire behaves like a magnet c. showed how experimental evidence of electromagnetic waves and their link to light d. contributed in developing equations that showed the relationship of electricity and magnetism. 4. The following are the properties of Electromagnetic waves EXCEPT_. a. EM waves can travel through a vacuum b. EM waves travel at the speed of 3 x 10 8 m/s c. EM waves have an electric field and magnetic field which vibrate parallel to each other d. As wavelength of EM wave decreases, its frequency increases. 11 5. The source of all electromagnetic wave is a. magnetic fields b. heat c. electric fields d. vibrating charges 6. Which of the following is NOT an electromagnetic wave? a. Sound b. Radio c. Light d. Infrared 7. How far is a light-second?. a. 5000 km b. 300,000 km c. 4,000,000 km d. 50,000,000 km 8. What is the wavelength of an electromagnetic wave that has a frequency of 1 Hz? a.More than 1 m b.Less than 1 m c.1 m d Cannot be determined 9. What is the frequency of an electromagnetic wave having a wavelength of 300,000km? a. More than 1 Hz b. Less than 1 Hz c. 1 Hz d. Cannot be determined 12  _10. What is the wavelength of the wave with a frequency of 3 x 10 9 Hz? a. 1.0 x 10-1 m b. 1.0 x 101 m c. 1.0 x 10-2 m d. 1.0 x 102 m Score: Additional Activity 15 Directions: Make a Comic Strip about the scientist contributions on the development of electromagnetic wave theory. Refer to the rubric below for your guidance in making your output. Remember: A comic strip is a sequence of drawings in boxes that tell an amusing story, or a form of story-telling, which uses drawings or cartoon characters to tell a story. 5 4 3 2 Content Concept is Concept is Concept is Concept is limited; clearly evident; acceptable: evident. Spelling and There are no There are 1-3 There are 4-5 There are more Grammar spelling, spelling, spelling, than 5 spelling, punctuation punctuation or punctuation punctuation, and or grammar grammar or grammar grammar errors errorsNo errors errors errors Visual Effect Comic strip Comic strip is Comic strip is Comic strip is not is incredibly very exciting quite exciting interesting and exciting and and interesting and exciting interesting interesting Table 2. Rubric for Comic Strip 13  References Books Robert L. Weber et.al. College physics. The McGraw Hill Companies. 5th ed. Herma D. Acosta et.al. Science Grade 10 Learners Material.Pasig City. Department of Education- Instructional Materials Council Secretariat (DepEd-IMCS), 2015. Herma D. Acosta et.al. Science Grade 10 Teachers Guidl.Pasig City. Department of Education- Instructional Materials Council Secretariat (DepEd-IMCS), 2015. Publications Joly C. Baradero. Weaving the Wave Learning. A Strategic Intervention Material for Grade 10- Science.2nd quarter. Nilo Nhs /Tigbao District. Anjaylo B. Pascua. Gotta Catch ’EM All. A strategic IMs for Grade-10 Science. 2nd quarter. Websites https://imagine.gsfc.nasa.gov/science/toolbox/emspectrum1.html https://www.britannica.com/science/electromagnetic-spectrum https://www.teachengineering.org/lessons/view/clem_waves_lesson04 https://scijinks.gov/rainbow/#:~:text=A%20rainbow%20is%20caused%20by,droplet%2C%20it%20makes %20a%20rainbow.) Images https://en.wikipedia.org/wiki/Heinrich_Hertz https://www.britannica.com/biography/AndreMarie-Ampere/media/1/21416/8352 aps.org/publications/apsnew/200807/physicshistory.cfm thoughtco.com/james-clerk- maxwell-inventor1991689 en.wikipedia.org/wiki/Michael_Faraday electromagnetic spectrum - https://www.researchgate.net Development Team Mi Ultimo Adios Adiós, Patria adorada, región del sol querida, Deja que el sol, ardiendo, las lluvias evapore Writer: Ruby V. Caperida Perla del mar de oriente, nuestro perdido Edén! Y al cielo tornen puras, con mi clamor en pos; A darte voy alegre la triste mustia vida, Deja que un ser amigo mi fin temprano llore Y fuera más brillante, más fresca, más florida, Y en las serenas tardes cuando por mí alguien ore, Editors: Margie Lou C. Jacob También por ti la diera, la diera por tu bien. ¡Ora también, oh Patria, por mi descanso a Dios! Laarni A. Adonis En campos de batalla, luchando con delirio, Ora por todos cuantos murieron sin ventura, Kathleen Joy B. Padilla Otros te dan sus vidas sin dudas, sin pesar; El sitio nada importa, ciprés, laurel o lirio, Por cuantos padecieron tormentos sin igual, Por nuestras pobres madres que gimen su amargura; Joly C. Baradero Cadalso o campo abierto, combate o cruel martirio, Por huérfanos y viudas, por presos en tortura Lo mismo es si lo piden la patria y el hogar. Y ora por ti que veas tu redención final. Reviewer: Sandy R. Albarico Yo muero cuando veo que el cielo se colora Y cuando en noche oscura se envuelva el cementerio Y solos sólo muertos queden velando allí, Illustrator: Y al fin anuncia el día tras lóbrego capuz; si grana necesitas para teñir tu aurora, No turbes su reposo, no turbes el misterio, Management Team: Vierte la sangre mía, derrámala en buen hora Tal vez accordes oigas de cítara o salterio, Soy yo, querida Patria, yo que te canto a ti. Y dórela un reflejo de su naciente luz. Majarani M. Jacinto, CESO VI SDS-ZDS Y cuando ya mi tumba de todos olvidada ` Mis sueños cuando apenas muchacho adolescente, Mis sueños cuando joven ya lleno de vigor, No tenga cruz ni piedra que marquen su lugar, Fueron el verte un día, joya del mar de oriente, Deja que la are el hombre, la esparza con la azada, Y mis cenizas, antes que vuelvan a la nada, Visminda Q. Valde, Ed.D Secos los negros ojos, alta la tersa frente, Sin ceño, sin arrugas, sin manchas de rubor El polvo de tu alfombra que vayan a formar. ASDS Ensueño de mi vida, mi ardiente vivo anhelo, Entonces nada importa me pongas en olvido. ¡Salud te grita el alma que pronto va a partir! Tu atmósfera, tu espacio, tus valles cruzaré. Raymond M. Salvador, Ed.D ¡Salud! Ah, que es hermoso caer por darte vuelo, Morir por darte vida, morir bajo tu cielo, Vibrante y limpia nota seré para tu oído, Aroma, luz, colores, rumor, canto, gemido, ASDS Y en tu encantada tierra la eternidad dormir. Constante repitiendo la esencia de mi fe. Si sobre mi sepulcro vieres brotar un día Mi patria idolatrada, dolor de mis dolores, Juliet M. Magallanes, Ed.D Entre la espesa yerba sencilla, humilde flor, Querida Filipinas, oye el postrer adiós. Acércala a tus labios y besa al alma mía, Ahí te dejo todo, mis padres, mis amores. CID Chief Y sienta yo en mi frente bajo la tumba fría, Voy donde no hay esclavos, verdugos ni opresores, De tu ternura el soplo, de tu hálito el calor. Donde la fe no mata, donde el que reina es Dios. Florencio R. Caballero, DTE Deja a la luna verme con luz tranquila y suave, Adiós, padres y hermanos, trozos del alma mía, EPS-LRMDS Deja que el alba envíe su resplandor fugaz, Amigos de la infancia en el perdido hogar, Deja gemir al viento con su murmullo grave, Dar gracias que descanso del fatigoso día; Y si desciende y posa sobre mi cruz un ave, Adiós, dulce extranjera, mi amiga, mi alegría, Deja que el ave entone su cántico de paz. Adiós, queridos seres, morir es descansar. Sandy R. Albarico EPS-Science Dr. Jose Rizal 16