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Soundwaves and Pressure
Investigation 3
Investigation 3
Soundwaves and Pressure
Phase 1 – Defined Understanding
Student Guide
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Access Teacher Guide
Student Guide with answers
Teacher PreLab
Prepare for the Experiment
Phase 2 – Dynamic Understanding
► Investigation Three Summary – Sound waves and Matter
In Investigation Three, you modeled how different types of matter affect sound waves. During this Investigation, you:
1. Modeled the speed of sound in three types of matter, air (gas), water (liquid) and iron (solid).
2. Calculated the speed of sound in solids, liquids, and gases.
► Investigation Three Summary – Learning Goals
Through these experiments, you concluded that:
1. The speed of sound is fastest in solids, not as fast in liquids, and slowest in gases.
2. The speed of sound changes depending on the type of matter. Matter that exhibits more attraction between its atoms or molecules will allow sound to travel at greater speeds. Matter that exhibits less attraction between its atoms or molecules will allow sound to travel at lower speeds. Different types of matter will cause a change in the wavelength of a sound wave, but the frequency of the sound wave will not change.
Concept Slides
Launch and Discuss
Mathematics Concepts in This Investigation
- (in)direct relationships
- patterns/trends
- frequency in Hertz
- greater than/less than/equal to
- problem-solving
- data table
- data analysis
- wavelength in meters
- calculating speed (m/s)
- decimals to the nearest tenth, hundredth, thousandth
- multiplication
- division
- manipulating mathematical formulas
- comparing values/measurable characteristics
- bar graph
- least to greatest
- skip counting by 1000