Summarize the key information presented in this passage about how sound waves travel and are perceived:

Sound is a form of energy that travels through a medium, such as air or water, in the form of waves. These sound waves are created by vibrating objects, which cause disturbances in the surrounding medium. The vibrations create areas of high and low pressure, which propagate outward as a series of compressions and rarefactions. The speed at which sound waves travel depends on the properties of the medium, such as its density and elasticity. In air, sound waves travel at around 343 meters per second. When these sound waves reach our ears, they cause the eardrum to vibrate, which sets into motion a series of tiny bones in the middle ear. These vibrations are then transmitted to the fluid-filled cochlea in the inner ear, where tiny hair cells convert the mechanical motion into electrical signals that can be interpreted by the brain as sound. The pitch of a sound is determined by the frequency of the sound waves, while the loudness is related to the amplitude or intensity of the vibrations.
Summarize the key information presented in this passage about how sound waves travel and are perceived:

Sound is a form of energy that travels through a medium, such as air or water, in the form of waves. These sound waves are created by vibrating objects, which cause disturbances in the surrounding medium. The vibrations create areas of high and low pressure, which propagate outward as a series of compressions and rarefactions. The speed at which sound waves travel depends on the properties of the medium, such as its density and elasticity. In air, sound waves travel at around 343 meters per second. When these sound waves reach our ears, they cause the eardrum to vibrate, which sets into motion a series of tiny bones in the middle ear. These vibrations are then transmitted to the fluid-filled cochlea in the inner ear, where tiny hair cells convert the mechanical motion into electrical signals that can be interpreted by the brain as sound. The pitch of a sound is determined by the frequency of the sound waves, while the loudness is related to the amplitude or intensity of the vibrations.
user
The key points are: sound is energy traveling as waves of compressions and rarefactions created by vibrating objects, the speed of sound depends on the medium's properties, sound waves cause the eardrum and inner ear structures to vibrate, converting the motion to electrical signals the brain interprets as sound, with pitch determined by frequency and loudness by amplitude.
assistant
Generate a series of (instruction, response) pairs that are similar in context and structure to the example provided below. Each pair should consist of a concise instruction followed by an appropriate, detailed response. The instruction should pose a clear task or question, while the response should provide a comprehensive answer or solution that could be understood by someone with a basic understanding of the subject.

Example pair: 
Instruction: Summarize in one sentence how old coal mines could heat homes without burning fossil fuels.

In a cavernous warehouse on the outskirts of Gateshead, north-east England, cases upon cases of wine tower into the distance. You might think that keeping these towering stacks of alcohol at a comfortable ambient temperature year round would lead to a mind-boggling energy bill – especially through the unforgiving north-east winters.

But, as is the case for a small but growing number of buildings in Gateshead, this is not so.

The warehouse sits above the remnants of old, flooded mine workings, deep below the surface. These old mines, which will never return coal to the surface again, are now producing another resource that, ironically, can help us emit less carbon, not more: geothermal heat.

In this part of England, with its long and complex history of mining coal, long-closed mines are being repurposed as an enormous, clean source of heat. And this warehouse is just the start. A new district heating system in Gateshead is poised to begin warming homes and buildings in the area at a cost 5% below market rate, using the clean heat from its mines 150m (490ft) below the ground.

Join me in the fourth episode of Future Planet's new video series, New Directions, where we visit the warehouse and a nearby mine water treatment plant, to explore how the skeletons of disused mines can provide sustainable heating.
Response: The old, flooded mines deep below the surface produce geothermal heat that can warm homes and buildings at a cost 5% below the market rate.

Your task is to generate more pairs that maintain this level of clarity and detail. The topic is Summarization. Write a long text of instruction by yourself, then summarize the given instruction in a response. Ensure that the responses are informative and accurate, suitable for an educational context. 

Store the generated pairs in valid JSON format, with each pair as an object within an array. Each object should have two key-value pairs: "instruction" and "response". For instance: 

{"contents": [{"instruction": "text", "response": "text"}, {"instruction": "text", "response": "text"}, ...]} 

Remember to maintain consistency in the format and ensure the generated pairs are diverse and cover a broad range of subjects. You must return the response in the asked format and you must not add any additional text in your response.
