1. Bell Ringer #8 Wednesday, November 15, 2017
What are the kinds of reflection?
The two ways in which a surface can reflect light are regular reflection and diffuse reflection.
What types of images do mirrors produce?
A plane mirror produces a virtual image that is upright and the same size as the object.
A concave mirror can produce a real or virtual image.
A convex mirror produces a virtual image that is always smaller than the object.

2. Unit 4 – Wave Behaviors and EM Waves
Chapter 4 – Light
Lesson 2 – Reflection and Mirrors
(Pages )

3. SCCCR Standards
8.P.3: The student will demonstrate an understanding of the properties and behaviors of waves.
8.P.3A. Waves (including sound and seismic waves, waves on water, and light waves) have energy and transfer energy when they interact with matter. Waves are a repeating pattern of motion that transfers energy from place to place without overall displacement of matter. All types of waves have some features in common. When waves interact, they superimpose upon or interfere with each other resulting in changes to the amplitude. Major modern technologies are based on waves and their interactions with matter.
8.P.3A.3 Analyze and interpret data to describe the behavior of waves (including refraction, reflection, transmission, and absorption) as they interact with various materials.

4. SCCCR Science and Engineering Practices
8.S.1: The student will use the science and engineering practices, including the processes and skills of scientific inquiry, to develop understandings of science content.
8.S.1A. The practices of science and engineering support the development of science concepts, develop the habits of mind that are necessary for scientific thinking, and allow students to engage in science in ways that are similar to those used by scientists and engineers.
8.S.1A.4 Analyze and interpret data from informational texts, observations, measurements, or investigations using a range of methods (such as tabulation, graphing, or statistical analysis) to (1) reveal patterns and construct meaning or (2) support hypotheses, explanations, claims, or designs.

5. What are the kinds of reflection?
Essential Questions
What are the kinds of reflection?
What types of images do mirrors produce?

6. Vocabulary
Ray
A straight line used to represent light waves
Regular reflection
Reflection that occurs when parallel rays of light hit a smooth surface and all reflect at the same angle
Image
A copy of an object formed by reflected or refracted rays
Diffuse reflection
Reflection that occurs when parallel rays of light hit an uneven surface and all reflect at different angles

7. Vocabulary
Plane mirror
A flat mirror that produces an upright, virtual image the same size as the object
Virtual image
An upright image formed where rays of light appear to come from
Concave mirror
A mirror with a surface that curves inward
Optical axis
An imaginary line that divides a mirror in half

8. Vocabulary
Focal point
The point at which light rays parallel to the optical axis meet, or appear to meet, after being reflected
Real image
An upside down image formed where rays of light meet
Convex mirror
A mirror with a surface that curves outward

9. What are the kinds of reflection?
Diffuse Reflection
Uneven surface
Unequal angles
Blurred image
Regular Reflection
Smooth surface
Equal angles
Clear image

10. What types of images do mirrors produce?
Virtual image
Upright
Same size
Forms where light seems to come from
Plane Mirror

11. What types of images do mirrors produce?
Focal point
Optical axis
Concave Mirror
Can produce real or virtual images
Real images if object is farther than the focal point
Virtual images closer than the focal point are always smaller

12. What types of images do mirrors produce?
Focal point
Optical axis
Virtual image always smaller than the object
Rays spread out
Appear to come from focal point
Convex Mirror