Sound and Light Megan Mayer Flashcards
What is pitch?
The highness and lowness of a tone.
What is a sound wave?
A longitudinal wave that travels through a medium. Caused by vibrations.
What is a Infrasound?
A sound below the range of human hearing.
What is ultrasound?
A sound with the frequency being above the human hearing range
What is decibel?
It’s the unit for what relative intensity is messed in (dB)
What is intensity?
The rate at which a sound wave moves energy through a medium
What is resonance?
When two things are amplified and are vibrating at the same frequencies
What is fundamental frequency?
When the wavelength is twice the length
What is harmonics?
When whole number multiples of that frequency
What is sonar?
Determines distance by measuring time for the waves to reflect form a surface.
What is basilar membrane?
Inside of the cochlea that is a long and flexible membrane
What is photon?
A beam of light that has no mass like bundles of energy. A unit or quantum of light.
What is intensity?
Depends on the amount of light. The number of photons that move through a given space.
What is a radar?
Determines velocity and location of objects.
What is the electromagnetic spectrum?
A full range of light that consists of all frequencies, energies, and wavelengths.
What is light rays?
A line in space that matches the flow that light and energy travel.
What is a virtual image?
An image that forms in a path of light rays that is not actually a path.
What is a real image?
A line of light rays that actually come together to form a image.
What is diffuse reflection?
When light rays go in random directions
What are geometrical optics?
When light behaves as a ray.
What is angle of reflection?
The angle of the light rays reflecting off the surface
What is the angle of incidence?
The angle of the light rays striking the surface
What is the law of reflection?
The law in which the angle of reflection and the angle of incidence
What is normal?
A line perpendicular to the surface at the point where the light hits
What is a convex mirror?
Mirrors that bulge out
What is a concave mirror?
Indented mirrors.
What is total internal reflection?
The reflection that happens when an angle of light strikes the surface boundary less than the critical angle.
What is lens?
A curved piece of glass that changes the direction of the light rays.
What is magnification?
Change in the size of the object
What is a prism?
Can separate white light from the others
What is a dispersion?
Light separates into different colors because of different wave speeds
What is a mirage?
A virtual image caused by refraction of light in the atmosphere
What is converging lens?
Bends light inward.
What is a focal point?
Focusing light rays into a small area
