ARE NOT SUITABLE FOR ANYONE WITH EPILEPSY AND MAY GIVE SENSORY - PowerPoint PPT Presentation

HERE IS A LIGHT SHOW. THE LIGHTS ARE FAST AND FLICKER A LOT SO IF THEY DAZZLE YOU PLEASE TURN THEM OFF. THEY ARE NOT SUITABLE FOR ANYONE WITH EPILEPSY AND MAY GIVE SENSORY OVERLOAD TO PEOPLE WITH AUTISM. https://www.youtube.com/watch?v=Y_1AI4bbh-g

WHAT DO WE NEED TO LEARN ABOUT IN Y3? We Are Learning To • identify sources of light • identify reflectors of light

WHAT IS LIGHT? Light is a form of energy that travels in a wave from a light source. Objects that give off light are called sources of light or can be described as being luminous. If an object is luminous, the light energy moves outwards from the object, in straight lines.

THESE OBJECTS ARE SOURCES OF LIGHT. THEY ARE LUMINOUS. Fireworks A fire fly A lit match An artificial A natural An artificial light source light source light source

THE SUN AND THE STARS ARE THE BIGGEST SOURCES OF LIGHT IN THE UNIVERSE

THE POLAR LIGHTS CAN BE SEEN AT THE EARTH’S MAGNETIC POLES IN THE NIGHT SKY. THEY ARE A BEAUTIFUL SPECTACLE.

HUMANS NEED LIGHT TO SEE. HUMANS HAVE BECOME VERY GOOD AT MAKING ARTIFICIAL LIGHT SOURCES. Candle Light Bulb Large Stadium Lights

THE MOON • The Moon looks as if it is a light source but it is not. . • The Moon reflects the light from the sun at night.

PLANETS AND MOONS DO NOT MAKE THEIR OWN LIGHT. THEY ARE NOT LUMINOUS SO THEY ARE NOT SOURCES OF LIGHT. THEY ARE REFLECTORS OF LIGHT.

NOW CUT OUT THE PICTURES AND SORT THEM INTO 2 GROUPS; ONE GROUP THAT ARE LIGHT SOURCES, EMITTING THEIR OWN LIGHT AND ONE GROUP THAT ARE NOT LIGHT SOURCES.

HERE ARE THE SOURCES OF LIGHT. DID YOU IDENTIFY ALL 11 OF THEM?

THESE OBJECTS MAY HAVE BEEN TRICKY FOR YOU. A television screen emits • A window is made of • The camera uses light light and is luminous to make a photograph. glass and this is when it is switched on! It is not a light but it transparent so it will We use many screens – may have a flash light allow light to pass e.g. phones, tablets, to use when there is through it. computers - and they are poor natural light. all sources of light.

CLICK ON THE LINK TO SEE REALLY COOL BIOLUMINESCENT SEA LIFE! https://www.youtube.com/watch?v=A9jaz0fynsk