The Electromagnetic Spectrum
Akopọ
Visible light is just one small part of a much larger family of waves. From radio waves to gamma rays, the electromagnetic spectrum spans an enormous range of wavelengths and frequencies, each with its own uses and dangers.
In this lesson you will learn the order of the electromagnetic spectrum, the uses of each type of radiation, the harmful effects of excessive exposure, and the protective measures that reduce those risks.
Awọn Afojusun
- Know that light is part of a continuous electromagnetic spectrum
- Know the order of the electromagnetic spectrum in terms of decreasing wavelength and increasing frequency
- Explain some of the uses of electromagnetic radiations
- Explain the detrimental effects of excessive exposure of the human body to electromagnetic waves and describe simple protective measures
Àwòrán ọpọlọ
A ti ṣe àwòrán kókó yìí kí o lè rí bí àwọn èrò ṣe so pọ̀.
Ṣí àwòrán ọpọlọ nínú áàpù
Káàdì ìrántí
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Ṣe ìdánrawò káàdì wọ̀nyí nínú áàpù
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Gba ohun èlò Green Bridge CBT sórí fóònù tàbí kọ̀mpútà rẹ fún gbogbo ilé ìkàwé IGCSE: ìwé ìdánwò àtijọ́, ìlànà ìdíwọ̀n, àwòrán èrò, káàdì ìkẹ́kọ̀ọ́ àti ẹ̀kọ́ ohùn.
Ìdánwò Ẹ̀kọ́
Oriire fun ipari ẹkọ lori The Electromagnetic Spectrum. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.
Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.
Lo ise abala yii gege bi anfaani lati mu oye re lori koko-ọrọ naa lagbara ati lati ṣe idanimọ eyikeyi agbegbe ti o le nilo afikun ikẹkọ. Maṣe jẹ ki awọn italaya eyikeyi ti o ba pade da ọ lójú; dipo, wo wọn gẹgẹ bi awọn anfaani fun idagbasoke ati ilọsiwaju.
- Which EM wave has the longest wavelength? A) Gamma rays B) X-rays C) Radio waves D) Microwaves Answer: C
- All EM waves travel at: A) 340 m/s B) 3 x 10^6 m/s C) 3 x 10^8 m/s D) Variable speeds Answer: C
- Excessive UV exposure can cause: A) Hearing loss B) Skin cancer C) Hypothermia D) Magnetic fields Answer: B
- Which is used in medical imaging of bones? A) Infrared B) Microwaves C) X-rays D) Radio waves Answer: C
- In order of increasing frequency: visible, infrared, ultraviolet. Correct? A) Yes B) No, it should be infrared, visible, ultraviolet C) No, it should be ultraviolet, visible, infrared D) No, they have equal frequency Answer: B
Ṣiṣẹ́ lórí àwọn ìbéèrè wọ̀nyí nínú ohun èlò náà
Ṣiṣẹ́ lórí àwọn ìbéèrè wọ̀nyí nínú ohun èlò náà
Awọn Iwe Itọsọna Ti a Gba Nimọran
Ẹ̀kọ́ síwájú láti àwọn orísun ṣíṣí
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Abala ìwé ẹ̀kọ́
The Electromagnetic Spectrum
Define the electromagnetic spectrum, and describe it in terms of frequencies and wavelengths
"Physics: The Electromagnetic Spectrum" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/physics/pages/15-1-the-electromagnetic-spectrum. Access for free at https://openstax.org/books/physics/pages/1-introduction
Àwọn àjọ mìíràn ló tẹ̀ wọ́n jáde lábẹ́ ìwé àṣẹ ṣíṣí, a sì dá wọn lọ́lá bí wọ́n ṣe béèrè. Àwọn ìjápọ̀ ń ṣí ojú òpó wọn.
Ṣe Adaṣe Awọn Ibeere Idanwo Adaṣe
Ṣe o fẹ ṣe adaṣe awọn ibeere idanwo adaṣe nipa The Electromagnetic Spectrum? Ṣe igbasilẹ ohun elo Green Bridge CBT lati wọle si awọn ibeere idanwo adaṣe ati awọn ayẹwo adaṣe kikun fun koko-ọrọ yii.
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