Sound gr.6
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The document discusses key properties of sound including amplitude, frequency, pitch, how it travels through different materials, and how some organisms use echo. It explains that sounds have larger amplitude and frequency when generated with more force. Pitch is determined by the length and tension of the vibrating object. Sound travels fastest through solids and slowest through air. Examples are provided of how bats and dolphins use echo to detect their surroundings. Relevant YouTube videos about sound and how the ear works are also listed.
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This document discusses disease and immunity. It defines pathogens and how they cause damage and enter the body. The body has mechanical, chemical, and cellular defenses against pathogens like hairs, mucus, stomach acid, lymphocytes, and phagocytes. Good hygiene practices like handwashing, food handling, waste disposal, and personal hygiene help reduce disease transmission. The immune system produces antibodies to mark pathogens for destruction. Memory cells provide long-term immunity after infection. Active immunity occurs through antibody production while passive immunity uses antibodies from another source temporarily.
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How To Sell Hamster Kombat Coin In Pre-market
How To Sell Hamster Kombat Coin In Pre Market
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Unlocking potential across borders! 🌍✨ Discover the transformative journey of Codeavour 5.0 International, where young innovators from over 60 countries converged to pioneer solutions in AI, Coding, Robotics, and AR-VR. Through hands-on learning and mentorship, 57 teams emerged victorious, showcasing projects aligned with UN SDGs. 🚀
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Read the full impact report to learn more about the Codeavour 5.0 International.Dr. Nasir Mustafa CERTIFICATE OF APPRECIATION "NEUROANATOMY"
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"NEUROANATOMY"
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Sound gr.6
- 1. Sounds
- 6. Larger amplitude Smaller amplitude Smaller frequency Larger frequency
- 7. • You hear a louder sound when you hit the drum with greater force. The drum vibrates with more energy making the air vibrate with more energy. • As sounds travels a greater distance molecules will vibrates with less force, that is why you hear a sound quieter when its source is further away from you.
- 8. Sound bouncing off objects Sound will bounce of objects, causing echo. Some organisms are able to feel their surroundings using echo, like bats and dolphins.
- 10. Sound pitch • The pitch is how high, or low a sound is. A child will usually scream at a high pitch. While a man will shout at a lower pitch. • Making a vibrating string shorter will result in a higher pitch note. Increasing the tension will also increase the pitch. Try it with rubber bands on a tissue box .
- 11. Sound will travel faster in solids than liquids, and slowest in air.
- 12. Videos to watch on Youtube • Sound video • https://www.youtube.com/watch?v=kt1pTcfstC8 • How the ear works • https://www.youtube.com/watch?v=HMXoHKwWm U8