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NOTES:1. You can place the diamond exhibits anywhere in either room (although they cannot be grouped together so try to space them out as much

NOTES:1. You can place the diamond exhibits anywhere in either room (although they cannot be grouped together so try to space them out as much as possible).2. You can place the start and end of laser beam on a wall anywhere in either room.3. You can use as many mirrors as you need; however, if you use more than 9, you will lose 1 mark for each additional mirror, and if you successfully use less than 9, you will gain 1 bonus mark.4. A mirror can be used to bounce the laser beam multiple times.5. Laser beams can cross each other.1. Using a pencil, LIGHTLY trace where you think the path of the laser beam will travel.You may need to try out a few ideas before you are sure. Hint: start with the hardest2.ray (in the middle?) and go from there.Cut and paste your mirrors where you need them. To change the angle of the rays, put your mirrors on a slant.3. Draw the Normal to the surface of the mirror. Use your protractor to make sure thatthe angle of incidence = angle of reflection.4. Draw your final rays permanently with a coloured pencil or marker. Draw arrows to show the direction of the laser.5. Glue your ray gun and sensor on your map.6. Cut and paste your diamond exhibits where you want them on the map. Be careful not to leave any gaps where a burglar can get at the diamonds.7. Give your security system a name.

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MIRROR ACTIVITY: Light Security System The Royal Ontario Museum (ROM) is looking for a new security system to protect their four (4) new diamond exhibits. The security system will consist of a laser beam that is reflected off several mirrors in the gallery rooms, creating a network of laser beams surrounding the diamond exhibits. GOAL: Design a security system using plane mirrors for the museum. CRITERIA: The light beam may be at any point of your choice in either room. The laser beam must block a burglar's entry from any of the doors or windows, and must adequately surround each diamond exhibit. Finally, it must hit the sensor which can be placed on any wall.beam must block a burglar's entry from any of the doors or windows, and must adequately surround each diamond exhibit. Finally, it must hit the sensor which can be placed on any wall. DIAMOND EXHIBIT DDD RAY GUN (START OF LIGHT BEAM) LIGHT SENSOR (END OF LIGHT BEAM) MIRROR NOTES:Marking: All doors and windows are adequately blocked by the laser. /4 Access to all diamond exhibits is adequately blocked by the laser. N Reflection of laser light is in accordance with the Law of Reflection. 15 Minimum number of mirrors used. 12 Diagram is neat and precise. Security system has a unique name. A /15

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