Make a sketch showing one meter stick modeling light rays traveling from flashlight to mirror and the other meter stick modeling light rays traveling from the mirror to Person 2’s face.The meter sticks make angles with the flat mirror.Make sure the two meter sticks are meeting on the mirror at the spot where Person 2 sees the beam of light reflected in the mirror.Hold the other meter stick so that it models light rays traveling from the mirror up to Person 2’s face.Hold one meter stick so that it models light rays traveling from the flashlight down to the mirror.To envision light rays traveling from the flashlight to the mirror and from the mirror to Person 2’s face, use a physical model for light rays:.Can you see light rays traveling from the flashlight to the mirror?Ĭan you see light rays traveling from the mirror to Person 2’s face?.If Person 2 goes up on tiptoes or crouches down low, what does Person 1 need to do to keep the light reflecting off the mirror onto Person 2’s face?.When Person 2’s face is lit, who can see light from the flashlight shining on the mirror?.1.26 Who can see the light from the flashlight in the mirror? How can Person 1 aim the flashlight at the mirror so that light shines on Person 2’s face at the other end of the table?įIG.
After a while switch positions so that everyone experiences what happens in each location. Persons 1 and 2 start the activity while Persons 3 and 4 report what happens.(If there is a fourth person, Person 4 is standing at the other side of the table.) Person 3 is standing at one side of the table. Person 2 is the person standing at the other end of the table. Person 1 is the person holding the flashlight. Ask group members to each stand on one side of the table as shown in Fig. Next explore reflection in a particular way: place the flat mirror on the table.What can you find out about reflection phenomena by playing with the flashlight and mirror? Keep track of your explorations in the During section of your notebook page.Note your initial ideas in the Before section of the physics notebook page documenting your exploration of reflection phenomena. What happens when a flashlight shines on a flat mirror in a dark room?.Record the Topic of this exploration on your physics notebook page.Clean the surface of the mirror so that the light reflects from the mirror rather than from dust on the surface.
Equipment: To explore reflection phenomena, obtain a flashlight, flat mirror, table, two straight sticks such as meter sticks, yard sticks, rulers or pencils, a dark room and at least three people with whom to collaborate.
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