Science Exam Flashcards
(41 cards)
Define Wave
Spreading of disturbance from one place to another
What do waves carry?
Energy
Crest
points of maximum displacement on a wave
Trough
Points of minimum displacement on a wave
Maximum displacement from the rest to the top of the crest and trough to the wave’s resting position
Amplitude
Frequency
The number of completed waves generated in a certain amount of time
The distance between 2 successive points of the same phase
Wavelength
How does frequency change the sound we hear?
High frequency: High pitch
Low frequency:Low pitch
Ho does amplitude change the sound we hear?
High amplitude:Loud sound
Low amplitude:Soft sound
What causes an echo?
The reflection of sound waves off a hard smooth surface
What media do sound waves pass through and why?
Solids/Hot substances because the molecules are tightly packed and close together.
On a hot day, what color shirt would you wear?
White
What is the difference between mechanical and electromagnetic waves?
Mechanical waves need a medium to travel through and an electromagnetic does not.
An increase or decrease in the frequency of sound waves (pitch) as an object making sound waves moves toward or away from a person.
Doppler Effect
How is EMS organized?
Frequency, Wavelength, &a Energy
What part of the EMS can be seen by humans?
Visible light
List the colors of the light spectrum from highest to lowest
Violet, Indigo, Blue, Green, Yellow, Orange, Red
When a wave bounces back after striking a barrier
Reflection
Examples of reflection
Echo and Mirror
bending of a wave as it passes from one medium to another
Refraction
Example of refraction
1) Talking to a friend who is under water
2) Pencil in a glass of water
The disappearance of EM wave into a medium
Absorption
Examples of Absorption
Soft pillow (pillow), Black
bending, spreading, and interference of waves when they go through a narrow opening
Diffraction
