Cameras and Eyes Lv4: Recap what happens to light when it hits an object. Lv5: Explain how a pin hole camera works Lv6: Analyse how a camera works. Entrance Activity Discuss with your partner why cameras are important. Do we really need them? Why do some people not like them? Should we have CCTV? Tool Box Pin hole camera Refraction Reflection Lens Ray diagram

(All light transmitted) Learning Activity Torch Challenge In your classroom you have a number of different opaque, translucent, and transparent objects. Using a torch, try and find 5 objects for each category. Simply hold the torch up to the object and see what whether any light is able to pass through. (Don’t have a torch? Try using your phone instead) Opaque (All light absorbed) Translucent (Some light absorbed) Transparent (All light transmitted)

Torch Challenge “True or False” Assessment Activity Torch Challenge “True or False” 1) When light hits an opaque object the light is absorbed by the object and isn’t able to pass through it. 2) Transparent materials absorb some of the light and allow the remaining to be transmitted through it. 3) Paper, thin cloth, and steal are all examples of translucent materials. 4) A red translucent object will only allow red light to be transmitted through it.

Cameras and Eyes Lv4: Recap what happens to light when it hits an object. Lv5: Explain how a pin hole camera works Lv6: Analyse how a camera works. Entrance Activity Discuss with your partner why cameras are important. Do we really need them? Why do some people not like them? Should we have CCTV? Tool Box Pin hole camera Refraction Reflection Lens Ray diagram

Student Reading Activity Pin Hole Camera Student Reading Activity The simplest kind of camera is a pin hole camera. Light goes through a tiny hole and forms an upside-down image on a screen at the back of the camera. It is called a pin hole camera because the hole can be made with a pin. This camera is a good model of how your eye works because believe it or not your eye sees thing upside down. Your brain has to flip the image so that you see things the correct way up.

Making Pin Hole Cameras Learning Activity Cut out net. Score lines and fold- DO NOT STICK! Line net with black paper (use sugar paper) Use a point to create a hole at the 'x' Fold black net and stick together (put flaps on the outside and use sellotape.) Line empty face with tracing paper. Observe flame.

Cameras and Eyes Lv4: Recap what happens to light when it hits an object. Lv5: Explain how a pin hole camera works Lv6: Analyse how a camera works. Entrance Activity Discuss with your partner why cameras are important. Do we really need them? Why do some people not like them? Should we have CCTV? Tool Box Pin hole camera Refraction Reflection Lens Ray diagram

Cameras Independent learning Using page 150 in your exploring science text books, read about how a camera works. Key things to find out are: What are the lenses used for? How does light reach the view finder? How does light hit the film/sensor? Success criteria Lv4: Describe function of one part of camera. Lv5: Explain how light reaches the view finder Lv6: Summarise the full workings of the camera, inclusing how light reaches the sensor.

Cameras and Eyes Lv4: Recap what happens to light when it hits an object. Lv5: Explain how a pin hole camera works Lv6: Analyse how a camera works. Entrance Activity Discuss with your partner why cameras are important. Do we really need them? Why do some people not like them? Should we have CCTV? Tool Box Pin hole camera Refraction Reflection Lens Ray diagram

The Milky way (Our Galaxy) Plenary Food for thought Light travels at 3x108 m/s. If you look at a star that is 10x108 meters away. Are you looking into the past, present, or future? Interesting fact The closest star to earth is said to be 4.7 light years away. That means that it takes the light produced by that star 4.7 years to get here. The Milky way (Our Galaxy)