What determines the pitch of a sound?
Extra Review For Unit 4 Test

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•
Mathematics
•
8th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Back
The pitch of a sound is determined by the number of vibrations produced per second.
2.
FLASHCARD QUESTION
Front
How do you calculate the total number of vibrations if a sound produces 2.62 x 10^2 vibrations per second for 5 x 10^-1 seconds?
Back
Multiply the number of vibrations per second by the time in seconds: 2.62 x 10^2 * 5 x 10^-1.
3.
FLASHCARD QUESTION
Front
What is scientific notation?
Back
Scientific notation is a way of expressing numbers as a product of a number between 1 and 10 and a power of 10.
4.
FLASHCARD QUESTION
Front
What are the two parts of scientific notation?
Back
The two parts are a coefficient (a number between 1 and 10) and a power of base 10.
5.
FLASHCARD QUESTION
Front
How do you divide numbers in scientific notation?
Back
Divide the coefficients and subtract the exponents of the powers of 10.
6.
FLASHCARD QUESTION
Front
What is the result of (6.9 x 10^7) / (2.3 x 10^-3)?
Back
3 x 10^10.
7.
FLASHCARD QUESTION
Front
If a class planted 7 x 10^5 trees and there are 3.5 x 10^3 students, how many trees did each student plant?
Back
Each student planted 2 x 10^2 trees.
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