Light and Sound by brianandhadi

Light and Sound by brianandhadi https://padlet.com/brianandhadi/briananddavid Made by David and Brian en-us 2017-01-25 19:24:28 UTC 2017-06-26 15:02:52 UTC hello@padlet.com http://more-sky.com/data/out/6/IMG_105592.gif Sound and Hearing(Brian) brianandhadi https://padlet.com/brianandhadi/briananddavid/wish/149445449 Fact #1
Sound waves enter the outer ear and travel through a narrow passageway called the ear canal, which leads to the eardrum so we can here.

Fact #2
The auditory nerve carries this electrical signal to the brain, which turns it into a sound that we recognize and understand.

Fact #3
Our ears vibrate in a similar way to the original source of the vibration, allowing us to hear many different sounds.
Fact #4
The sound of thunder is produced by rapidly heated air surrounding lightning which expands faster than the speed of sound.
Source
http://www.sciencekids.co.nz/sciencefacts/sound.html

]]> 2017-01-25 19:40:12 UTC https://padlet.com/brianandhadi/briananddavid/wish/149445449 Changing sound(David) brianandhadi https://padlet.com/brianandhadi/briananddavid/wish/149445957 Fact #1
Whenever a sound is made something vibrates for example when we talk our vocal cord vibrates.
Fact #2
Sound is louder when it is going trough a solid object.If your friend puts his or hers ear on a metal poll and you speak on the poll it is louder in a poll than in air.
Fact #3
The pitch of a sound is how low the sound is or how high the sound is.Tuba has a low sound and a Flute has a high sound.
Fact #4
If you blow in a empty bottle it will make a low sound and if you fill a bottle up and blow in it the sound will be high.
Source
http://www.bbc.co.uk/schools/scienceclips/ages/9_10/changing_sounds.shtml]]> 2017-01-25 19:41:31 UTC https://padlet.com/brianandhadi/briananddavid/wish/149445957 Light and Shadow (Brian) brianandhadi https://padlet.com/brianandhadi/briananddavid/wish/149446450 Fact #1
A shadow is made when an object blocks light. The object must be opaque or translucent to make a shadow. A transparent object will not make any shadow, as light will pass straight through it.
Fact #2
The object must be opaque or translucent to make a shadow. A transparent object will not make any shadow, as light will pass straight through it.

Fact #3
Light is a form of energy which our sense of sight can detect. It is made of electro-magnetic radiation and travels in a straight path.
Fact #4
There are different colours of light because they are light waves which have different wavelengths. Red light has the longest wavelength while violet light has the shortest wavelength.

Source
http://www.kidsbuilder.com/FunFactsForKids/light.html

]]> 2017-01-25 19:43:03 UTC https://padlet.com/brianandhadi/briananddavid/wish/149446450 How we see things(David) brianandhadi https://padlet.com/brianandhadi/briananddavid/wish/149446849 Fact #1
Surfaces that best reflect light are surfaces that are shiny and smooth (like a mirror, or a glass wall). This is because light bounces off them more easily than surfaces that are dull and bumpy (like a brick wall).
Fact #2
When light bounces off a object our eyes see it and senses it, and when we see and object we see the color that it reflects.
Fact #3
Light first has to come from a light source and after that it reflects off an object and we can see the object.
Fact #4
when we look at a mirror it reflects light that hits it because it has a shiny face.
Source
http://www.bbc.co.uk/schools/scienceclips/ages/10_11/see_things.shtml

]]> 2017-01-25 19:44:20 UTC https://padlet.com/brianandhadi/briananddavid/wish/149446849 brianandhadi https://padlet.com/brianandhadi/briananddavid/wish/149459534 2017-01-25 20:25:31 UTC https://padlet.com/brianandhadi/briananddavid/wish/149459534