Sound waves strike a glass and cause it to shatter.
this phenomenon illustrates
(1) resonance (3) reflection
(2) refraction (4) diffraction

The passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection

The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.

Astudent creates a model of a closed ecosystem by filling a glass tank half full with water, then adding 10 snails and two small aquatic plants. the next day, all the snails are dead. what is the most likely cause of their death?