Make Way For Light.
The Proerties of Light.
Students
will investigate how shadows are formed when light is blocked by opaque
objects.
What happens to light when it hits an object?
When lights hits an object, it is either reflected, absorbed, refracted or transmitted. When light is reflected, it reflects to our eyes, and it is this light that allows us to see an object. Certain objects will absorb certain colours and reflect other colours of the light spectrum. This is how objects gain their colour. Refraction of light is related to reflection and transmission of light. The light changes direction as it passes through a more dense medium and then reflects back to our eyes. Transmission of light is when light passes through an object. Opaque objects transmit no light.
Focus Questions and predictions for this lesson.
Can light travel through things? How do we know that?
Does light travel through all things? How do we know that?
How does this type of material affect the light transmitted?
How does the type of material affect the amount of light transmitted?
What does the brightness of the light tell us about how much light is being transmitted?
Which objects transmitted the most light?
Which objects transmitted the least light?
Were there some objects that only transmitted some light?
What happened to the light if it wasn’t being transmitted through an object?
Which object is easier to see from a distance?
Why do you think it is harder to see transparent objects than opaque objects?
Do you think a translucent object would be easier or harder to see than an opaque or transparent object?
What happens to light when it hits an object?
When lights hits an object, it is either reflected, absorbed, refracted or transmitted. When light is reflected, it reflects to our eyes, and it is this light that allows us to see an object. Certain objects will absorb certain colours and reflect other colours of the light spectrum. This is how objects gain their colour. Refraction of light is related to reflection and transmission of light. The light changes direction as it passes through a more dense medium and then reflects back to our eyes. Transmission of light is when light passes through an object. Opaque objects transmit no light.
Focus Questions and predictions for this lesson.
Can light travel through things? How do we know that?
Does light travel through all things? How do we know that?
How does this type of material affect the light transmitted?
How does the type of material affect the amount of light transmitted?
What does the brightness of the light tell us about how much light is being transmitted?
Which objects transmitted the most light?
Which objects transmitted the least light?
Were there some objects that only transmitted some light?
What happened to the light if it wasn’t being transmitted through an object?
Which object is easier to see from a distance?
Why do you think it is harder to see transparent objects than opaque objects?
Do you think a translucent object would be easier or harder to see than an opaque or transparent object?
Bill Nye the Science Guy, This is about how we see colour.
References:
BBC-Ks2, Bitesize Science, 2013, Shadows. Retrieved 1st December 2013. <http://www.bbc.co.uk/bitesize/ks2/science/physical_processes/shadows/read/2/ >
Education Services Australia, 2013, Scootle Education,, Light and Reflection: Light Rays. Retrieved October 13trh 2013. http://www.scootle.edu.au/ec/viewing/L2041/index.html
You Tube, 2011, Light and colour Bill Nye. Retrieved 21st October 2013.
< http://youtu.be/gtgBHsSzCPE >
You Tube, 2012, Science-Light- Properties-English. Retrieved 201th October 2013. http://www.youtube.com/watch?v=Q9HLqeoEatc
BBC-Ks2, Bitesize Science, 2013, Shadows. Retrieved 1st December 2013. <http://www.bbc.co.uk/bitesize/ks2/science/physical_processes/shadows/read/2/ >
Education Services Australia, 2013, Scootle Education,, Light and Reflection: Light Rays. Retrieved October 13trh 2013. http://www.scootle.edu.au/ec/viewing/L2041/index.html
You Tube, 2011, Light and colour Bill Nye. Retrieved 21st October 2013.
< http://youtu.be/gtgBHsSzCPE >
You Tube, 2012, Science-Light- Properties-English. Retrieved 201th October 2013. http://www.youtube.com/watch?v=Q9HLqeoEatc