Classwork Grade 8

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•
Science
•
8th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the reason communication in space occurs by using radio waves?
Back
Sound needs a medium (like air) to be carried and space has no medium (it's a vacuum).
2.
FLASHCARD QUESTION
Front
Which wave has a greater frequency, A or B?
Back
Wave A has a greater frequency.
3.
FLASHCARD QUESTION
Front
What term is used to identify the distance between points C & G?
Back
Wavelength.
4.
FLASHCARD QUESTION
Front
What happens to light when it is refracted?
Back
Light bends.
5.
FLASHCARD QUESTION
Front
What is the definition of frequency?
Back
The number of waves that pass in a given amount of time.
6.
FLASHCARD QUESTION
Front
What is amplitude in wave terminology?
Back
The maximum extent of a wave's displacement from its rest position.
7.
FLASHCARD QUESTION
Front
What is the definition of wavelength?
Back
The distance between successive crests of a wave.
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