Sound Energy
Sound occurs when objects ____.
What is vibrate?
This characteristic of sound depends on the sound's frequency. It's what makes a sound seem high or low.
What is pitch?
It funnels sounds into the ear canal.
What is the outer ear?
It is the most important source of light.
What is the Sun?
This part is the colored part of the eye.
What is the iris?
The part of the sound wave where the particles are bunched together is called a ______.
What is compression?
These types of instruments make sound when you shake or strike them.
What are percussion instruments?
This part of the ear vibrates when sound waves hit it.
What is the eardrum?
Plants convert sunlight into this type of energy.
What is chemical energy?
This is the dark opening in the center of the iris.
What is the pupil?
Sound waves are this type of wave.
What is a longitudinal wave (or a compression wave)?
These instruments make sounds when a column of air inside vibrates.
What are wind instruments?
These three items also vibrate inside the ear.
What are the tiny bones?
These type of animals give off light.
What is bioluminescence?
Light rays form an upside-down image on this part of the eye.
What is the retina?
A sound wave passes the quickest through this form of matter.
What is a solid?
The approximate number of strings inside a piano.
What is around 200? (230, to be more exact)
This snail-shaped organ is filled with a liquid.
What is the cochlea?
Light travels in straight lines called _____.
What are rays?
Light is changed into signals that travel along this nerve to the brain.
What is the optic nerve?
Scientists can use ___ to figure out how deep the ocean is.
What are echoes?
The strings on a violin that play the highest notes.
What are thin metal wires?
This nerve sends signals to the brain which are interpreted as sound.
What is the auditory nerve?
Scientists refer to all forms of light energy as ____.
What is electromagnetic radiation?
This part of the eye refracts the light rays that enter the eye.
What is the lens (or the cornea)?