![]() ![]() Hearing in humans involves a lot of different parts inside the ear working together. Here are some of our printable resources for helping your child learn more about sound waves. Sound waves for kids activities to extend the learning But bats that are active during the day and feed on fruit, don’t echolocate at all. Nocturnal bats also use echolocation to help them hunt for food and navigate the landscape at night. Echolocation helps them survive in darkness. And it is especially useful to animals that live deep in the ocean where sunlight does not reach. They use their lower jaws and foreheads to detect sounds, which they then transmit back to their inner ears where they are converted to nerve impulses and sent to the brain for interpretation. Some ocean animals (dolphins and whales) send out sounds, such as clicks or whistles, and then listen for the echo when these sounds bounce back off of nearby objects. They use sound waves to find food and navigate. So it’s no surprise that many animals in the ocean use sound for more than just communicating. For example, sound waves move four times faster in the water than in the air. Snakes use their skull, crickets hear with their front legs, and frogs sense sounds with their lungs!Īnimals in different habitats sometimes use different ways to hear. They then convert the vibrations into nerve impulses that are sent to our brains for interpretation. ![]() The fluid vibrates and moves these hairs. It houses the Organ of Corti, which has sensory hair cells called stereocilia. ![]() These little bones transfer the sound to the cochlea, which is full of fluid. It moves the vibrations to the three tiny bones (called ossicles) in our ear. When sound waves hit it, the skin vibrates. It is made up of a thin layer of skin stretched tight across the opening. Its job is to detect and amplify sound waves. Our eardrum is located in the middle ear. It helps to collect sound and funnel it into our middle ear. The outer ear is the body part that sticks out on the side of our head. We have special organs and bones inside our ears to help us hear sound. Source: Lars Chittka Axel Brockmann How we hear. Low energy sounds also don’t travel as far as high energy sounds. Low energy creates quieter sounds and higher energy makes louder sounds. How loud something sounds depends on the amount of the energy producing it. Instead, they move the energy from the source to the receiver. The particles themselves don’t travel from the source to the receiver. They, in turn, bump into the particles surrounding them, making them vibrate, and they affect the particles around them… and so on, and so on. When sound is produced, the energy vibrates the particles around it. Each of these mediums is made up of particles. Sound energy travels through different mediums: gas (air), liquid (such as water), and solids. And the energy movement through the medium creates the sound. The receiver hears (and interprets) the sound. ![]() To have sound, you must have a source, a receiver, and a medium. Vibrating things move back and forth really fast. Sound is simply energy vibrating particles. © Can Stock Photo / ra2studio What are sound and sound waves? This mini-lesson about sounds waves for kids ages 9 to 12 years old will explore sound and how it works. Sound is everywhere. A bird singing, a bouncing basketball, and an opera singer singing…we can hear all of these thanks to sound waves. ![]()
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |