6. Sound is an example of a(n) _____________ wave *
Longitudinal*******
Transverse
Surface
Electromagnetic
7. Which of the below options demonstrate reflection? *
A rainbow
Ripples in a pond*******
An echo
The tone that a plucked rubber band makes
8. Sound waves carry music from speakers across your backyard to your ears while you swim in your pool. The sound waves travel through air. Air is the *
Energy*********
Medium
Matter
Frequency
6. Agree
7. Disagree
8. Disagree
The correct answers are:
6. Sound is an example of a(n) longitudinal wave.
7. Ripples in a pond demonstrate reflection.
8. Sound waves carry music from speakers across your backyard to your ears while you swim in your pool. The sound waves travel through air. Air is the medium.
To answer these questions, we need to understand the concepts of waves and their properties.
6. Sound is an example of a longitudinal wave. To determine this, we can recall that sound waves are mechanical waves, meaning they require a medium (substance) to travel through. In the case of sound, it travels through the air or any other material medium. Longitudinal waves are characterized by particles of the medium oscillating back and forth in the same direction as the wave itself. This aligns with the nature of sound waves, as they cause air particles to compress and expand in the same direction as the wave travels.
7. Reflection is when a wave encounters a boundary or surface and returns back to its original medium. To identify an example of reflection, we can consider the options provided. A rainbow does not demonstrate reflection, as it is formed by refraction and dispersion of light. Ripples in a pond, on the other hand, do demonstrate reflection. When a wave hits the surface of the water, it bounces back and creates the ripples we observe. This is a clear example of reflection. An echo is also an example of reflection, as it occurs when sound waves bounce off a surface and return back to our ears. Therefore, the correct answer is "Ripples in a pond."
8. In this question, we are asked to identify what air is in the context of sound waves traveling through it. The options provided are energy, medium, matter, and frequency. Looking at these options, we know that air is not a form of energy, as energy is the ability to do work. Air is also not a matter, as matter refers to physical substances. Frequency is a property of waves, not a description of the medium. Therefore, the correct answer is "medium." In the given scenario, air acts as the medium through which sound waves travel from the speakers to your ears.