SNC 2D1 Name: ________________________ Activity: Curved mirror Webquest Website: http://zunal.com/process.php?w=26087 Draw a sketch of: (above) Concave Mirrors Convex Mirrors Constructing the image of a point. 1. Any two rays will tell us where the image of a point will be located. With spherical mirrors we know where three different rays go. 2. Concave mirrors bring parallel rays of light to a point at the principal focus. 3. A convex mirror makes parallel rays of light separate as if they came from a virtual focal point. 4. The three rays (fill in the location of the reflected rays of light) a. A ray parallel to the principal axis will go, _________________________ _________________________ _______._______._______________ F C b. A ray of light, which goes through the center of curvature will, ____________________ ________________________ c. A ray of light which goes through the principal focus will, ________________________ ________________________ *Use the Animations for the Concave and Convex Mirror sections to help with the sketches in Case 1 – 8. The Molecular expressions Animations are helpful as well. Case 1. Object at an infinite distance from the mirror F C Description of the image in case 1. (Circle the correct answer) 1. Real or Virtual 2. Forms a Point 3. Location of image: ____________________ Case 2. Object at a finite distance beyond the center of curvature Description of the image in case 2. (Circle the correct answer) 1. Real or Virtual 3. Larger, Smaller, or the Same size 2. Inverted or Erect 4. Location of Image: ___________________ Case 3. Object at the center of curvature Description of the image in case 3. (Circle the correct answer) 1. Real or Virtual 2. Inverted or Erect 3. Larger, Smaller, or the Same size 4. Location of Image: ___________________ Case 4. Object between the focal point and the center of curvature Description of the image in case 4. (Circle the correct answer) 1. Real or Virtual 2. Inverted or Erect 3. Larger, Smaller, or the Same size 4. Location of Image: ___________________ Case 5. Object at the focal point Description of the image in case 5. (Circle the correct answer) What happens with the reflected rays? Case 6. Object between the mirror and the focus Description of the image in case 6. (Circle the correct answer) 1. Real or Virtual 2. Inverted or Erect 3. Larger, Smaller, or the Same 4. Location of Image: ___________________ Answer the Check your Understanding questions #1-7 in the Image Characteristics for Concave Mirrors section. Case 7: Images formed by convex mirrors C F Description of the image in case 7. (Circle the correct answer) 1. Real or Virtual 2. Inverted or Erect 3. Larger, Smaller, or the Same 4. Location of Image: ___________________ Case 8: Object moved closer to the convex mirror. Description of the image in case 8. (Circle the correct answer) 1. Real or Virtual 2. Inverted or Erect 3. Larger, Smaller, or the Same 4. Location of Image: ___________________ Answer the Check your Understanding questions #1-10 in the Image Characteristics for Concave Mirrors section. In this section you will use the mirror equation to determine the location of the image, focal length, and size of the image. Through the WebQuest, write the two mirror equations. (focal length and magnification) Mirror Equation: Magnification Equation: 1 = f So = Si *All distances measured from the vertex (center of the mirror along the principal axis. Variable identification: f - is the focal length So – size of the object Si – size of the image do – object distance from the vertex di - image distance from the vertex Example problems: (all objects are 2 cm tall) 1. Object is located 5 cm from a concave mirror, with a focal length of 2.5 cm. a. Where is the image formed? b. What is the size of the image? c. Draw a ray diagram to confirm the math and describe the image. 2. Object is located 12 cm from a convex mirror, with a focal length of 4 cm. a. Where is the image formed? b. What is the size of the image? c. Draw a ray diagram to confirm the math and describe the image. * Use the Curved Mirror Intro link, and click on the Converging and Diverging Mirror Virtual Lab. 3. Create four example problems (2 concave and 2 convex ) for another group to solve. Write them below, create an answer key and turn this page into your teacher.