Sound Waves Flashcard

Front

All sound is made by:
a) vibrations
b) heat energy
c) magnetism
d) reflections

Back

vibrations

Front

What determines pitch?

Back

wavelength

Front

Kelly shouts "hey" in an empty hall at the shopping mall. The sound bounces off the walls and she hears "hey" over and over again. Kelly has just made

Back

an echo.

Front

Sound waves are produced by

Back

vibration.

Front

Where can special equipment sensitive to sound be placed so it is NOT affected by sound waves? Options: deep under water, high in the air, in a solid piece of concrete, in outer space.

Back

in a solid piece of concrete

Front

Which sound has a pitch that is MOST DIFFERENT from the other three sounds? Options: fire alarm, bouncing ball, smoke detector, alarm clock

Back

bouncing ball

Front

Which tool is a part of a system for making sounds louder?

Back

Front

The information in the table tells us that animals hear different sounds. Which animal hears the fewest sounds? Options: bat, dog, elephant, frog

Back

frog

Front

Which sound wave has the longest wavelength?

Back

Front

Which diagram of a sound wave represents the sound with the highest pitch?

Back