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Science Lesson 1 Grade 6
topic 5
29
Science
6th Grade
02/09/2022

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Term
wave
Definition
any disturbance that transfers energy from place to place
Term
medium
Definition
The matter a wave travels through
Term
vacuum
Definition
a mechanical wave cannot travel through such as space
Term
Mechanical wave
Definition
an ocean wave is one type of wave
Term
transverse wave
Definition
travels in perpendicular to the direction of of the sources motion.
Term
What is the difference between a mechanical wave and an electromagnetic wave?
Definition
A mechanical wave is a wave that moves through some type of matter. Electromagnetic wave connects to radio waves, visible light, microwaves and xrays
Term
longitude wave
Definition
a wave that travels in the same direction as the vibrations produce it.
Term
crests
Definition
the high point of a wave
Term
Trough
Definition
the low point of a wave
Term
wavelength
Definition
distance between one wave to the other
Term
amplitude
Definition
halfway between the crest and the trough
Term
frequency
Definition
the number of times a wave passes a certain point at a different time.
Term
compression
Definition
air that is squeezed together
Term
rare faction
Definition
gaps between two compressions
Term
reflection
Definition
the wave bounces off and heads in a different direction.
Term
What does the law of reflection state?
Definition
the angle of incident equals the angle of reflection.
Term
angle of incidence
Definition
the angle between the incoming wave and the normal
Term
Angle of reflection
Definition
the angle between the reflected wave and the normal
Term
normal
Definition
a line perpendicular to the surface at the point where reflection occurs
Term
refraction
Definition
bending of waves due to a change in speed
Term
absorption
Definition
the energy of a wave is transferred to the material it encounters
Term
interference
Definition
when two waves collide from opposite directions so they form a bigger hill like shape
Term
standing wave
Definition
a wave that appears to stand in one place
Term
resonance
Definition
an incerase in teh amplitudeof a vibration that occurs when an increase in the amplitude of a vibration that occurs when external vibrations match an objects natural frequency
Term
pitch
Definition
a sound refers to how high or low the sound seems
Term
what is the cause of any sound wave
Definition
vibrations
Term
decibel
Definition
Term
What are 4 things that can happen to sound waves when they reach a barrier?
Definition
reflection, refraction, diffraction, and interference
Term
reflection
Definition
the wave bounces off and heads in a different direction.
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