light, All opaque objects reflect, reflection, When you see the image of an object in another object, it's called a, angles, When rays of light hit most opaque surfaces, the rays are reflected at lots of different , diffuse, Rough surfaces do not make clear images, this is called ------- reflection , specular , When rays of lights hit a very smooth opaque surface, it's called ------- reflection, mirror image, The reflection of an object is its , periscope, A ------- lets you see places you might not otherwise be able to see, tube, A simple periscope is a long ------- with a flat mirror at each end, mirrors , The------- are at an angle of exactly 45 degrees, boundary , The speed of the light ray changes at the , refraction, The change in speed and direction, bioluminescence, The ability of animals to create it's own , sonoluminescence, Under the right conditions, bubbles can give off light.

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