I when are concave lenses used?		47 transverse wave
L mirror curved inward		6 cornea
MM change in the direction of a wave when the wave finds an obstacle or and edge, such as an opening		44 wave length
UU wave in which the particles of the medium move perpendicularly to the direction of the wave is traveling		33 loudness
BB make sound when the string that vibrate are plucked		26 percussion
VV physical environment in which a phenomenon occurs		1 laser
DD reflected sound waves		2 retina
A device that produces intence light of only one color		39 diffraction
Q object not transparent/translucent		12 concave mirror
Z make sound when struck		34 pitch
S bouncing back of waves		3 lens
JJ when two waves with the same amplitude combine, they cancel out		42 wave speed
CC use of reflected sounds to find an object		13 plane mirror
TT particles of the medium vibrate back and forth along the path that the wave moves		36 destructive interference
G when the eye is too short, causes the lens to focus light behind the retina		29 echolocation
SS related to the height of a wave- maximum distance the particles of a medium vibrate from their rest position		25 string, wind, percussion
PP speed at which a wave travels through a medium		28 string
H when the eye is too long and causes the light to focus in front of the retina		5 pupil
V 7 parts of em spectrum in order		35 resonance
KK when waves combine and have a longer amplitude		22 radio waves, microwaves, infrared rays, visible light, ultraviolet rays, xrays, gamma rays
LL combination fo two/more waves that results in a single wave		15 translucent
GG how loud/to what extent a sound can be heard		4 iris
E opening in the eye through which light passes		8 nearsightedness
Y name the 3 different kinds of instruments		38 interference
B back surface of the eye, where light is detected by rods and cones		45 amplitude
F membrane that protects the eye through which light is reflected		14 blue, red, green
O matter that transmits light but not an image (see through but kind of blurry)		48 medium
R bending of a wave as it passes at an angle from one substance/material to another		9 microscopes, glasses
J wen are convex lenses used?		24 electromagnetic waves
P allows light to pass through easily (see through clearly)		16 transparent
T transfer of energy carried by light waves to particles of matter		11 concave mirror
W transfer of energy as em waves		37 constructive interference
X wave that consists of electric and magnetic fields that vibrate at right angles to each other		17 opaque
D colored part of the eye that controls the size of the pupil		43 frequency
AA produces sound when vibration is created at one end of its air column		21 scattering
QQ number of waves produced in a given amount of time		20 absorption
C convex and refracts light to focus a real image on the back of the eye		30 echo
OO bouncing back of a ray of light sound or heat when the ray hits a surface that does not go through		23 radiation
EE observed change in the frequency of a wave when the source/ observer is moving		27 wind
HH how low/high a sound seems to be		7 farsightedness
K mirror curved outward		10 magnifying glass, camera lens
FF most common unit used to express loudness		18 refraction
M mirror that has a flat surface		19 reflection
WW periodic disturbance in a solid, liquid, or gas as energy is transmitted through a medium		49 wave
NN bending of a wave as the wave passes between two substances in which the speed of the wave differs		32 decibels
RR distance from any point on a wave to an identical point on the next wave		46 longitudinal wave
U interaction of light with matter that causes light to change direction		41 reflection
N what are the three primary colors of light		31 doppler effect
II when and object vibrating at/near the resonant frequency of a second object, the second object starts vibrating		40 refraction