Logs

​https://www.youtube.com/watch?v=e7DAM1zFDec

Logs

Multiple Choice

Who came up with the idea of logarithms?

• Isaac Newton
• Galileo Galilei
• Albert Einstein
• John Napier

Multiple Choice

In what year were logarithms created?

• 1614
• 1901
• 1776
• 1492

Multiple Choice

By 1624, there was a table for logarithms for numbers ______.

• 1-10,000

• 1-50,000

• 1-20,000

• 1-100,000

Multiple Choice

Which log is equivalent to log(12)+log(14)?

• log(12 + 14)
• log(12 - 14)
• log(12 * 14)
• log(12 / 14)

Multiple Choice

What is a common base for logarithms?

• 10
• e
• 5
• 2

Multiple Choice

What is an example of something the brain perceives logarithmically?

• Temperature and pressure
• Weight and height
• Color and texture
• Loudness and brightness

Multiple Choice

log100,000=?

• 5
• 6
• 4
• 3

Multiple Choice

What is log0.00005?

• 10
• -4.3

• -43

• .1

Multiple Choice

What two stars did the video compare?

• Alpha Centauri and Proxima Centauri
• Beetlegeuse and Sun

• Venus and Mars
• Sirius and Earth's sun

Multiple Choice

What is an example of a scale that uses logarithms?

• Richter scale
• Kelvin scale
• pH scale
• Fahrenheit scale

Multiple Choice

What is the pH of water?

• 7

• 5

• 1

• 10

Multiple Choice

How much more Hydrogen does a pH of 8 have compared to pH of 7?

• 10
• 100
• 1
• 1000

Multiple Choice

How much more powerful is an earthquake of 8.0 compared to an earthquake 5.0?

• 10
• 100
• 500
• 1000

Multiple Choice

How much louder is 100dB compared to 60dB?

• 500 times
• 100 times
• 2 times
• 10,000 times