Answer: In order for reflection to occur, the wave must “bounce off” an object
Explanation: For example if your looking in the mirror the waves are bouncing off the mirror to reflect your image
Answer:Overview. Polymer chemists study large, complex molecules. They understand how the smaller building blocks (monomers) combine to form polymers, and they manipulate both their molecular structure and chemical or other processing to develop specific functional characteristics in an end product.
Explanation:
Answer:
Sound travels more quickly in solids.
Explanation:
That’s because it is the collisions of particles that transmit the energy of the sound waves.
In solids, the particles are packed as tightly as they can get. The energy of the collision passes from one particle to another quite rapidly. For example, the speed of sound in steel is about 6000 m/s (22 000 km/h).
The particles in liquids are further apart, so it takes longer for the sound energy to get from one particle to the next. The speed of sound in water is about 1500 m/s (5400 km/h).
The particles in a gas are relatively far apart, so it takes time for one particle to get to another. The speed of sound in air is about 340 m/s (1200 km/h).
The answer to that would be false
