sound waves science

 Waves transfer ——— through a medium or empty space. 

   

energy

A section of a sound wave where the particles are crowded together is called a

 A substance through which a wave can travel is a

compression.

medium.

 How does a speaker work? Refer to the diagram below.

One of the speaker's magnets is a permanent magnet (meaning that it is always magnetized) and the other is an electromagnet meaning it needs electricity to run through it to work.

When an electrical signal is sent to the speaker, it creates a fluctuating magnetic field that pushes and pulls the coil, (push and pull force) causing it to move back and forth with the attached speaker cone. 

The cone vibrates and causes air molecules to collide with each other

4. When you increase the frequency of a transverse wave,

Circle One:  Wavelength will increase 

Wavelength will decrease

.What can these waves travel through?——-space

9.What can these waves travel through? Circle: Solids   Liquids   Gases   Space

10. Explain how bats locate their insect prey with low and high frequency sound waves. Use the word Echolocation

Using a process called echolocation, bats emit high-frequency sound waves (ultrasound) that bounce off objects in the environment, and then interpret the returning echoes to determine the location, size, and shape of its prey.

A —-ruler vibrates more slowly, so has a lower frequency. A shorter ruler vibrates more quickly so has a —- frequency.

longer

higher