Topic 3 Lesson 3 Waves and the Electromagnetic Spectrum

Flashcard
•
Science
•
4th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is a wave?
Back
A wave is a disturbance that transfers energy from one place to another without transferring matter.
2.
FLASHCARD QUESTION
Front
What is the electromagnetic spectrum?
Back
The electromagnetic spectrum is the range of all types of electromagnetic radiation, including visible light, radio waves, X-rays, and more.
3.
FLASHCARD QUESTION
Front
What happens when light hits a transparent material?
Back
Most of the light can go through the transparent material, which is called refraction.
4.
FLASHCARD QUESTION
Front
What is refraction?
Back
Refraction is the bending of light as it passes from one medium to another, changing its speed.
5.
FLASHCARD QUESTION
Front
What is absorption in terms of light?
Back
Absorption is when light is taken in by a material and does not pass through or bounce off.
6.
FLASHCARD QUESTION
Front
What are X-rays used for?
Back
X-rays are used in medicine to see inside the human body, as they can be absorbed by dense materials like bones.
7.
FLASHCARD QUESTION
Front
What is the function of the aperture in a camera?
Back
The aperture controls the amount of light that enters the camera, similar to how the pupil controls light entering the eye.
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