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Sound Waves

For revision

What causes sound? Vibrations
Where do sound waves travel? In the air.
What does sound waves have anything to do with energy? They carry energy.
What makes an echoe? When sound waves hit a surface and bounce back to you.
What is pitch? The highnesss or lowness of a sound.
What is frequency? The number of times a second a sound wave repeats in a second.
What is volume? The loudness or softness of a sound.
What is amplitude? How high a note is.
What is volume measured in? Decibels
What causes sounds less than 0 decibels? Giant explosions or waves in the ocean.
Why are scientists studying sounds less than 0 decibels? To predict when a volcano will erupt or when a tsunami is coming.
Created by: 21seyije123