Cultivation of KODO MILLET . made by Ghanshyam pptx
Light and sound CEIP Los Ángeles Torrelodones 6th graders
1. Light and Sound
Light and sound
By Carlos Q, Heidy, Bea, Alberto, Carlos S, Marta, Lucía
2. Light and Sound
1- Light
1.1 The properties of light
1.2 Transparent, translucent and opaque materials
1.3 Light reflection
1.4 Light refraction
2- Colour
4.1 Colour mixing
3- Sound
5.1 How sound travels
5.2 Characteristics of sound
5.3 Sound reflection
5.4 Noise pollution
4- Group activity
INDEX
By Carlos Q, Heidy, Bea, Alberto, Carlos S, Marta, Lucía
5. Light and Sound
THE PROPERTIES OF LIGHT
They can:
Travel in a straight line and in any direction
Pass trough some materials
Some objects can´t pass trough and they can make a shadow
By Carlos Qiang
22. Light and Sound
3. CHARACTERISTICS
Loudness: some are loud and some are soft. We messure it
in decibels (db)
Pitch Some are high and some are low
Timbre has got a special quality which help us to identify
their source
By Lucía Paz Torán
23. Light and Sound
4. SOUND REFLECTION
EchoEcho
Sound reflects on a surface
that it´s far away
Sound reflects on a surface
that it´s near
ReverberationReverberation
By Lucía Paz Torán
24. Light and Sound
5. CURIOSITIES
Stethoscope Thunders and lightings
By Lucía Paz Torán
25. Light and Sound
6. NOISE POLLUTION
Sound is essential to our daily lives, but noise is not.
By Marta Herrero
26. Light and Sound
By Carlos Q, Heidy, Bea, Alberto, Carlos S, Marta, Lucía
Group :1 Group :2 Group :3 Group: 4
Sergio Triana Jaime Samu
Julia Nico.V Cristina Laura
Pablo.L Sara Javi Jorge
Amara Pablo.J María Miranda
Marcos Esteban Ernesto
GROUP ACTIVITY
27. Light and Sound
a). b).
By Carlos Q, Heidy, Bea, Alberto, Carlos S, Marta, Lucía
GROUP ACTIVITY
28. Light and Sound
By Carlos Q, Heidy, Bea, Alberto, Carlos S, Marta, Lucía
THANK YOU!
Editor's Notes
Natural:
The Sun
Artificial:
Light bulb
TRANSPARENT MATERIALS :
THE LIGHT PASS THROUGH THEM
WE CAN SEE THROUGH THEM
TRANSLUCENT MATERIALS :
SOME LIGHT CAN PASS THROUGH THEM
WE CAN’T SEE VERY CLEAR
OPAQUE MARIALS :
THEY BLOCK LIGHT
WE CAN’T SEE THOUGH THEM
They can:
Travel in a straight line and in any direction
Pass trough some materials
Some objects can´t pass trough and they can make a shadow
When light is refracted its speed and direction change.
A lens is a piece of transparent material that refracts
1.White light from the Sun is a combination of seven colours
2.If youshine white light through a glass prism light is divided into colours.The Sun light is formed into a spectrum of seven colours.
3.Different materials reflect some colours and absorbs other.
The wall looks white because it doesn´t absorb any colour.
The door looks green because it reflectsgreen light.
The cat looks black because it absorbsall light and it doesn´t reflect any colour.
The colour of an objet depends on the colours of light that it reflects.
If you mix two primary colours of ligth you will get a second colour.
For example:
If you mix specific colours like:
Blue, green, red, yellow, cyan and magenta you will get white colour
Sound is a form of energy produced by the vibration of objects. We can hear the sound through the sense of hearing.
Production: First the object vibrate. For example: the bell vibrates
Transmission: Then the vibration is transmitted in sound waves.
Reception: Finally the sound waves enter to our ears
Sound waves can travel in different ways:In a straight line, they can travel in all directions
Trough a medium: solid, liquid or gaseous substance.
And they can travel through water: at about 1,500 metres per second and through air at about 340 metres per second
Loudness it´s a loud sound and easy to hear we messure it in decibels (db)
Pitch Some are high and some are low
Timbre has got a special quality which help us to identify their source
Echo: Sound reflects on a surface that it´s far away for example: when you shout in front of a mountain, sound waves reflects on the mountain´s wall and it produces echo
Reverberation: Sound reflects on a surface that it´s near for example: whem someone is talking with a microphone, sound waves reflects, as you can see in the picture, sound waves reflect on the people that is near to us
Stethoscope is the tool that doctors use to hear the heartbeat. The most common heartbeat for people is about 70-80 heartbeats. But it´s interesting…. Fetus usually have 150 heartbeats!!!! Now you´re going to work in groups. Each group will have one stethoscope and you´re going to listen the others heartbeats.
Do you know why thunders appear after lightnings? Well, light is quicklier than sound so, light travels 300.00 m/s and sound travels 340 m /s
Questions:
Sound is essential to our daily lives, but noise is not. Noise is generally used as an unwanted sound because they are so loud. For example you are sleeping and suddenly you hear you dog barking, your neighbours are in a party and you also hear the car. It will be horrible!!
