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Science Topic 3: Waves & Information
Topic 3 Vocabulary
26
Science
4th Grade
02/05/2023

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Term
Wave
Definition
a disturbance that travels in a pattern and carries energy
Term
Amplitude
Definition
the greatest height of a wave in its resting position
Term
Wavelength
Definition
the distance between similar points on a wave
Term
Frequency
Definition
the number of times a wave repeats itself in a certain amount of time
Term
transverse wave
Definition
a wave that moves and carries energy perpendicular to the particles it travels through
Term
crest
Definition
the top point of a transverse wave
Term
trough
Definition
the bottom part of a transverse wave
Term
longitudinal wave
Definition
a wave that moves in the same direction as the particles it travels through
Term
transfer
Definition
to move from one object to another
Term
appear
Definition
to be seen or to show up
Term
circular wave
Definition
a disturbance at a single point that moves outward in all directions
Term
plane wave
Definition
a wave that is made when a line of matter is disturbed
Term
superposition
Definition
waves meeting and combining amplitudes as they move
Term
wave period
Definition
the time it takes a wave to move one wavelength
Term
ray
Definition
a line of energy that moves in one direction until it hits an object
Term
reflect
Definition
to bounce off of an object
Term
system
Definition
a group of parts that work together to complete a task
Term
absorb
Definition
to take something steadily
Term
refract
Definition
to bend when passing through an object
Term
receiver
Definition
the part of a device that changes radio waves into a usable message
Term
transmitter
Definition
the part of a device that sends radio signals
Term
analog
Definition
a continuous signal that sends information
Term
antenna
Definition
a part of a device that receives radio wave signals
Term
digital
Definition
signals that use clear-cut numbers to represent data
Term
range
Definition
all possibilities between two endpoints
Term
signal
Definition
a message
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