Log Basics
Real-Life Applications
Richter Scale
pH and Biochemistry
Sound & Decibels
100

This is the inverse of an exponential function.

What is a logarithmic function?

100

This logarithmic scale measures how acidic or basic a solution is

what is the pH scale?

100

An earthquake that measures 6 is this many times more intense than one that measures 5.

What is 10 times?

100

pH stands for this.

What is potential of hydrogen?

100

This scale measures the loudness of sound

What is the decibel scale?

200

The value of log₁₀(100) is this.

What is 2?

200

This scale measures earthquake strength using logs

what is the richter scale?

200

The formula used for the Richter scale is log(I/I₀), where I is this.

What is the intensity of the earthquake?

200

The formula to find pH is this.

What is –log[H⁺]?

200

A sound that is 10 dB louder is this many times more intense.

what is 10 times?

300

The base in the expression log₂(8).

What is 2?

300

Logs are used to compress this property of sound

what is intensity?
300

A Richter scale reading of 3 corresponds to this value of intensity if I₀ = 1.

What is 1,000?

300

A solution with pH 3 has this many times more H⁺ than one with pH 5.

What is 100 times more?

300

Decibels use this type of math

What are logarithms?

400

log₅(1) always equals this.

What is 0?

400

Logs help model the rate at which this biological process occurs over time

what is enzyme activity?

400

A magnitude 7 quake is this many times more intense than a magnitude 4.

What is 1,000 times?

400

Enzyme activity is very sensitive to this.

What is pH level?

400

the formula for decibels is 10 x log(l/l0) where l0 is this.

what is the reference intensity?

500

log₃(81) equals this.

What is 4?

500

logarithms are used in finance to calculate this over time.

what is compound interest?
500

The Richter scale is logarithmic because earthquake energy increases this way.

What is exponentially?

500

A pH of 7 means a solution is this.

What is neutral?

500

A sound that is 100 times more intense has this decibel increase

What is 20 decibels?

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