# Intensity in Physics: Definition & Measurement

Instructions:

question 1 of 3

### How much brighter is the sun than the full moon? Choose the best approximation. Hint: Use the apparent magnitude equation to calculate the ratio of intensities given the following apparent magnitudes: m sub sun = -26.7 m sub moon = -12.6

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### 2. Calculate the ratio of intensities of sound waves between a 60 dB conversation and a 35 dB whisper. Hint: Use the sound intensity level equation, and note that I sub o is a constant.

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Via multiple example problems, this quiz/worksheet fusion will test your understanding of principles such as apparent magnitude, sound intensity, and absolute magnitude.

## Quiz & Worksheet Goals

More specifically, you will be examined on:

• The brightness comparison between the sun and full moon
• Your calculation of the sun's absolute magnitude
• The ratio of intensities between different sound waves

## Skills Practiced

• Reading comprehension - ensure that you draw the most important information from the related lesson on intensity in physics
• Problem solving - use acquired knowledge to solve practice problems on absolute and apparent magnitude
• Information recall - access the knowledge you've gained regarding the empirical world