Electromagnetic Waves
Flashcard
•
Science
•
6th - 8th Grade
•
Practice Problem
•
Easy
Barbara White
Used 22+ times
FREE Resource
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10 questions
Show all answers
1.
FLASHCARD QUESTION
Front
Amplitude Noun
[am-pli-tood]
Back
Amplitude
A measure of a wave's maximum displacement from its equilibrium position, which is directly related to the wave's energy.
Example: This diagram shows amplitude as the maximum height of the wave from its center resting position to its highest point, the crest.
2.
FLASHCARD QUESTION
Front
Frequency Noun
[free-kwen-see]
Back
Frequency
The number of complete wave cycles or crests that pass a specific point in a given amount of time.
Example: This diagram shows how waves can have different frequencies; gamma rays have a high frequency (many waves packed together) while radio waves have a low frequency.
3.
FLASHCARD QUESTION
Front
Wavelength Noun
[wayv-length]
Back
Wavelength
The distance between two consecutive, identical points on a wave, such as from one crest to the next crest.
Example: This diagram shows that wavelength is the distance from the top of one wave (crest) to the top of the next one.
4.
FLASHCARD QUESTION
Front
Photon Noun
[foh-ton]
Back
Photon
A discrete particle or quantum of electromagnetic radiation that carries energy proportional to its radiation frequency.
Example: This diagram shows photons, which are packets of light energy, hitting a metal surface and knocking electrons out, demonstrating the photoelectric effect.
5.
FLASHCARD QUESTION
Front
Electromagnetic Wave Noun
[eh-lek-tro-mag-net-ik wayv]
Back
Electromagnetic Wave
A wave of oscillating electric and magnetic fields that propagates through space and can travel through a vacuum.
Example: The Sun sends energy to Earth in the form of electromagnetic waves, a process called radiation, which can travel through empty space.
6.
FLASHCARD QUESTION
Front
Electromagnetic Spectrum Noun
[eh-lek-tro-mag-net-ik spek-trum]
Back
Electromagnetic Spectrum
The entire range of all possible frequencies of electromagnetic radiation, ordered by frequency, wavelength, and energy.
Example: This diagram shows the electromagnetic spectrum, arranging different types of waves like radio waves and X-rays by their increasing frequency and decreasing wavelength.
7.
FLASHCARD QUESTION
Front
Infrared Noun
[in-frah-red]
Back
Infrared
Electromagnetic radiation with wavelengths longer than visible light, which is invisible to the human eye and often perceived as heat.
Example: This thermographic image shows a handprint's heat signature, demonstrating how infrared radiation, which we feel as heat, can be made visible by special cameras.
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