A wave is turned back when it meets the boundary of the medium in which it is traveling. The wave is said to have undergone 1. reflection. 2. diffraction. 3. refraction. 4. interference.

A wave is turned back when it meets the boundary of the medium in which it is traveling. The wave is said to have undergone reflection(1)

Explanation:

The law  of reflection  states that when a wave meet the boundary of the medium in which it is travelling ,the wave will reflect in such a way that the angle at which it approached the medium is equal to the angle at which they reflect off the medium

so Answer is (1) Reflection

question1

1,000 tons

question2

3: 8

question 3

store d

step-by-step explanation:

first thing first of the answer is with technology. second thing second thing is that the big bang theory did not happened u see they say it did but what they dont realize is that like dinasures are still a round they might deny it but they and look at these 12 foot human skelteons they find lets see didnt the bible say something about giants. hope this peace.