1 8.2.2.1 8.4.6.1 Read the
statement is not correct? Listen, read and ch
1 Sound travels in waves.
2 Our ears and brain work together so that we can hear.
3 Sound travels through air, liquid and solid materials.
4 Cats, rabbits and horses don't hear as well as people.
hammer
What does this sound like?
We hear sounds all day long! There are sounds we enjoy, like music
or people talking to us. There are also sounds we don't like, for
example car horns or a dog barking. Sound actually travels in
waves. Our ears and brain work together for us to hear them. The
part of the ear that we see is the outer ear. This is where the sound
waves are collected. We hear them when they go through the ear
canal and hit our eardrum. When sound waves hit our eardrum, it
vibrates and moves three little bones, the hammer, the anvil and
the stirrup. These little bones bump against each other and help
sound move along and enter the cochlea. This is a small, curled
tube which looks like a snail shell. Inside the cochlea is liquid and
nerves. These nerves are really small, but very important. As the
stirrup moves, it makes waves in the liquid of the cochlea. These
cause the nerves to move as well. When this happens, the nerves
create signals that the brain understands and we can hear!
anvil
2.
DIDUKNOW?
Ю

killskorpion19    3   25.11.2021 07:37    4