Fr/Dec/% Year 8 - Term2 ; Week 2

Alphabet Multiplacation

Word Web : Synonyms - Accomplish

Fr/dec/% Year 8 ; Term 2 : Week 4

Week 4 ; Term 2 : Think board - Henry

Echolocation : Explanation

Introduction

Echolocation is a unique process of sound that is repeatedly used mainly by many animals to help to avoid/detect danger,obstacles or food/water. Animals such as bats, marine mammals, rodents even humans.

Body:

A bat is a perfect example of echolocation. When a bat travel through pitch-black caves, they use echolocation. Bats sends vibrating signals which can either bounce back to the bat or carries on until they reach an object then bounce back. If the vibrations bounce back fast that means there are objects ahead so they avoid it but if it doesn’t come back until it reaches a nearby object the bat goes ahead until they reach that objects. Bats also use echolocation to hunt insects or food. Bats use their ears as eyes. They send the same vibrating signals which bounces of an insect then back which tells the bat thats its a prey. Echolocation helps humans too. They use ultrasound to check if a baby in the mothers stomach and to detect animals in seas and rivers.

Conclusion:

Try yelling in a cave can you hear your echo. The vibration of your vocal cord vibrated throughout the cave then back to your ears where the brain translates it back into sound. Many animals rely on their ears instead of their eyes.

Sound Explanation

Introduction : Sound is everywhere around us. Even when you're in a silent room you can still hear yourself breathing or your heart pumping. Body : Sound is vibration. If an object is hit, it begins to vibrate. These vibrations travel through sound waves. The closer the sound waves the higher the pitch, further away sound waves gives you a lower pitch. Also sound can travel four times faster in water than air. Just think about ripples in a pond. When you throw a pebble into the pond, it creates ripples. Just like sound, It vibrates then fades and it shows you an example of what these vibrations may look like. Why we hear sound is because these sound waves travel through your ears then into your brain where your brain translates it into words/sound. Did you know? In space there is no sound. The reason behind this is that vibrations need something to travel through. In earth the vibrations can travel through air or water. In space though, There is no mediums so the vibrations cannot travel and make sound. So without water or air there is no sound. Conclusion : A world without sound would be so tough. Sound boosts our chance of survival and communication. Sound can help animals hunt their food and help detect danger. Animals would become extinct fast and humans wouldn’t have meat to eat.