ELECTROMAGNETIC RADIATION AND ITS EFFECTS

_{ELECTROMAGNETIC RADIATION AND ITS EFFECTS}

Maria Vicenta Galvez-Evangelista

Zamboanga National High School West

Objective:

• Explain the effects of electromagnetic radiation in living things and the environment.

• S10FEIIe-F49

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Let's answer.

Fill in the Blanks

Correct the statement below.

Cell phones uses Infrared to communicate.

Multiple Select

Forge bank money can be detected through UV light.

• True

• False

Multiple Select

Microwave can cook food.

• False

• True

Multiple Select

Speed gun uses X-rays to calculate speed of moving vehicle

• False

• True

Multiple Select

Infrared are used in TV remote controls

• True

• False

_{Learning Task 1}

Read and analyze the various effects of electromagnetic radiation in the environment and other living things. Then answer the questions afterwards.

Electromagnetic Radiation

• Form of energy that is all around us.

• Takes many forms such as Radio Waves, Microwaves, infrared, visible light, ultraviolet rays, X-rays,and , Gamma rays in order of Decreasing Wavelength.

• These waves in various regions in the EM Spectrum share similar properties but differ in wavelength, frequency, energy and method of production.

ELECTROMAGNETIC RADIATION: ENVIRONMENTAL INDICATORS IN OUR SURROUNDINGS

• All living tissues have magnetic properties that are affected to some extent by the existence of electromagnetic radiation in the environment. Therefore all living creatures including plants, microbes, animals and humans are environmental indicators of exposure to electromagnetic radiation.

• Radiation is the process through which energy travels in the form of waves or particles through space or some other medium.

• Electromagnetic radiation is the propagation of waves that have an electric (E) and a magnetic (H) field component. Biological cell proliferation and differentiation can be affected by both the AC and DC magnetic filed.

ELECTROMAGNETIC RADIATION: ENVIRONMENTAL INDICATORS IN OUR SURROUNDINGS..(continuation)

• Radiofrequency and microwave wavelengths can be made to carry information via amplitude, frequency, and phase modulation such as data from television, mobile phones, wireless networking and amateur radio.

• Chromosomal damage is a mechanism relevant to causation of birth defects and cancer. Long term continuous or daily repeated EMF exposure has been found to induce cellular stress responses at non - thermal levels that lead to an accumulation of DNA errors.

ELECTROMAGNETIC RADIATION: ENVIRONMENTAL INDICATORS IN OUR SURROUNDINGS..(continuation)

• Comparative studies in animals that rely on electromagnetic orientation provide valuable information. The effects of electromagnetic orientation on plants and animal life include the diminished radial growth of pine trees, lowered density of bird species and mammals such as storks, sparrows and bats effects on bees, effects on magnetic-based homing mechanisms of birds, and many other effects.

• Plants and animals can be monitored as environmental indicators to assess the effects of electromagnetic radiation.

• -Adapted from: Environmental Indicators by Yael Stein and Osmo Hanninen, 2014

Open Ended

Can living things serve as an indicator of exposure to electromagnetic radiation? Why?

Open Ended

Explain the process of electromagnetic radiation.

Open Ended

Based on the article, what are some of the advantages that can be given by radio frequency and mcirowaves?

Open Ended

How about the disadvantages of the negative effects of EM radiation? Cite some examples.

Open Ended

As a conclusion, explain whether EM radiation is beneficial or harmful yo the environment and the living things. Support your idea by giving some points. ( Refer to your module Number 4 for completing task on page 8-9)

Picture Identification

Identify what type of EM waves affect them. Choose whether it is Radio Wave, Gamma Ray, Ultraviolet, Infrared, Visible light, Microwave and X-ray.

Picture Identification

Identify what type of EM waves affect them. Choose whether it is Radio Wave, Gamma Ray, Ultraviolet, Infrared, Visible light, Microwave and X-ray.

Picture Identification

Identify what type of EM waves affect them. Choose whether it is Radio Wave, Gamma Ray, Ultraviolet, Infrared, Visible light, Microwave and X-ray.

Picture Identification

Identify what type of EM waves affect them. Choose whether it is Radio Wave, Gamma Ray, Ultraviolet, Infrared, Visible light, Microwave and X-ray.

Multiple Choice

Multiple Choice. Read and understand and write the correct answer.

1. Looking directly at something bright such as the sun, has a negative effect on your __________.

• A. Skin

• B. Eyes

• C. Heart

• D. Lungs

Multiple Choice

Multiple Choice. Read and understand and write the correct answer.

1. Looking directly at something bright such as the sun, has a negative effect on your __________.

• A. Skin

• B. Eyes

• C. Heart

• D. Lungs

Multiple Choice

Multiple Choice. Read and understand and write the correct answer.

2. Which rays enables us to see?

• A. Microwave

• B. Infrared

• C.Ultraviolet

• D. Visible light

Multiple Choice

Multiple Choice. Read and understand and write the correct answer.

3.Which material can be used to protect people from gamma rays?

• A. Sunblock lotion

• B. Soap

• C.Alcohol

• D. Perfume

Multiple Choice

Multiple Choice. Read and understand and write the correct answer.

4. Which type of ray can be felt as warmth?

• A. Microwave

• B. Ultraviolet

• C. Infrared

• D. Visible Light

Multiple Choice

Multiple Choice. Read and understand and write the correct answer.

5. How can UV ray cause skin cancer?

• A. Too much exposure UV radiation from the sun can damage the genetic material in your skin.

• B. Low exposure UV radiation from the sun can damage the genetic material of your skin's cell.

• C. Exposure from UV rays will hinder the absorption of Vitamin D, which can damage your skin's cell.

• D. UV rays can cause mutation of skin cells that results to abnormal growth of skin allergies.

ASSIGNMENT FOR YOUR PERFORMANCE TASK NUMBER 4

MAKE A CAMPAIGN MATERIAL FOR POSSIBLE SOLUTIONS TO LESSEN THE EFFECTS OF ELECTROMAGNETIC RADIATION THAT WILL NOT BE EXPENSIVE. RUBRICS WILL BE PROVIDED AND YOU WILL BE GRADED FOR CONTENT, CREATIVITY, CLARITY AND NEATNESS AND ORIGINALITY.

Picture Identification

Identify what type of EM waves affect them. Choose whether it is Radio Wave, Gamma Ray, Ultraviolet, Infrared, Visible light, Microwave and X-ray.