Science Lesson 2 test

How faster is the average speed of sound in a solid than in a gas?

13.9 times the speed in a gas.

When a mechanical wave, such as sound, reflects off a surface, what can the reflected wave tell you about the surface?

A reflected wave can tell how far away a surface is and whether the surface is hard or soft.

Why is the energy decreasing?

Because the amplitude of the wave is decreasing.

Pitch

How high or low a sound is

What does the amplitude of mechanical waves depend on?

How much energy is carried by the waves.

What do surface waves spread out in?

In a circle around the original disturbance.

What can a sound wave travel through?

Solids, liquids, or gases.

What is the average speed of sound in a liquid?

The average speed of sound in a liquid is about 3.7 times the average speed of sound in a gas.

What is the average speed of sound in a solid?

The average speed of sound in a solid is about 3.7 times the average speed of sound in a liquid.

What happens if two sound waves are identical except for their amplitude?

The sound wave with the higher amplitude will sound louder.

How can the speed of sound change?

The speed of sound can change due to the arrangements and types of particles that the sound is traveling through.

Once a tsunami forms, the wave can travel hundreds of kilometers before reaching land. Are the water molecules that touch land the same ones that the earthquake initially moved? Why or why not?

Waves carry energy through the water, but the molecules that were moved by the earthquake don't carry the water to the land. Waves transfer energy, not matter!

Is the volume directly related to the amplitude of a sound wave?

Yes.

What is pitch related to?

frequency

Sound is made up of what waves.

Mechanical waves.

What would the wave with the greater amplitude be carrying more of?

More energy

Do all sound waves travel at the same speed?

No, sound waves don't always travel at the same speed.

How do the particles of a medium behave when a mechanical wave moves through the medium?

Particles move as the wave passes them but do not move along with the wave.