Which are characteristics of a ray when it hits a boundary and refracts, but not when it hits the boundary and reflects? check all that apply. a. changes direction b. changes speed c. does not change direction d. does not change speed e. bounces off the boundary f. passes through the boundary

B. changes speed  

F. passes through the boundary

Explanation:

Only these two options are characteristics of a ray when it is refracted, but not when it is reflected. In fact:

Reflection occurs when a ray hits the interface between two mediums and bounces off back. When it is reflected, the ray changes direction, but does not change speed since it does not change medium.

Refraction occurs when a ray passes through the interface between two different mediums. When it is refracted, the ray changes direction, and it changes speed as well, since it changes medium.

Based on these definitions, we can say that only B. (changes speed) and F. (passes through the boundary) are properties of a refracted ray but NOT of a reflected ray. All the other choices are wrong because:

A. changes direction --> it is true for both reflection and refraction

C. does not change direction --> it is false

D. does not change speed --> it is false

E. bounces off the boundary --> it is true only for reflection

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.