mirrors and lenses.pptx
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The document provides rubrics for assessing a report on reflection and mirrors, including content, presentation, materials, and assessment. It then discusses key terms and concepts related to reflection such as the angle of incidence, angle of reflection, and normal line. Demonstration activities are described to illustrate the left-right reversal of images in plane mirrors and a "who wants to be a millionaire" activity. Finally, the characteristics of images formed by plane and curved mirrors are outlined.
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- 1. RUBRICS FOR REPORTING CONTENT: 15 points PRESENTATION: 15 points MATERIALS (creativity & clarity): 10 points ASSESSMENT: 10 points
- 2. Lights: Mirrors and Lenses
- 5. Reflection is the bouncing off of light rays when it hits a surface like a plane mirror.
- 6. Activity: Angle of Incidence vs Angle of Reflection Important Terms! Incident Ray - ray of light approaching the mirror represented by an arrow approaching an optical element like mirrors Reflected Ray - ray of light which leaves the mirror and is represented by and arrow pointing away from the mirror. Normal Line - an imaginary line that can be drawn perpendicular to the surface of the mirror at the point of incidence where the ray strikes the mirror.
- 7. Angle of Incidence – the angle between the incident ray and the normal line Angle of Reflection – the angle between the reflected ray and the normal line
- 9. GROUP ACTIVITY: MIRROR LEFT- RIGHT REVERSAL
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- 12. IMAGES FORMED BY PLANE MIRRORS Reflection - bouncing of light rays when it hits a surface like mirror CHARACTERISTICS IS DESCRIBED IN TERMS OF: IMAGE ORIENTATION LOCATION SIZE
- 13. IMAGE Virtual image - formed when an outgoing ray from an object always diverge (move apart) ORIENTATION Erect, laterally inverted Lateral inversion- phenomenon wherein what is left on the object appears as right on the image and vice versa. This is due to the direction that light follows when it strikes a reflecting surface like mirror.
- 14. LOCATION same distance from the mirror as the object distance SIZE same size as the object
- 15. Types of Reflection Specular/ Regular Reflection -the reflection of light on smooth surfaces such as mirrors or calm body of waters Diffuse/Irregular Reflection -the reflection of light on rough surfaces such as clothing, paper and asphalt roadway
- 16. IMAGES FORMED BY CURVED MIRRORS