Flashcards in Science Exam Deck (41)
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1
Define Wave
Spreading of disturbance from one place to another
2
What do waves carry?
Energy
3
Crest
points of maximum displacement on a wave
4
Trough
Points of minimum displacement on a wave
5
Maximum displacement from the rest to the top of the crest and trough to the wave's resting position
Amplitude
6
Frequency
The number of completed waves generated in a certain amount of time
7
The distance between 2 successive points of the same phase
Wavelength
8
How does frequency change the sound we hear?
High frequency: High pitch
Low frequency:Low pitch
9
Ho does amplitude change the sound we hear?
High amplitude:Loud sound
Low amplitude:Soft sound
10
What causes an echo?
The reflection of sound waves off a hard smooth surface
11
What media do sound waves pass through and why?
Solids/Hot substances because the molecules are tightly packed and close together.
12
On a hot day, what color shirt would you wear?
White
13
What is the difference between mechanical and electromagnetic waves?
Mechanical waves need a medium to travel through and an electromagnetic does not.
14
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
15
How is EMS organized?
Frequency, Wavelength, &a Energy
16
What part of the EMS can be seen by humans?
Visible light
17
List the colors of the light spectrum from highest to lowest
Violet, Indigo, Blue, Green, Yellow, Orange, Red
18
When a wave bounces back after striking a barrier
Reflection
19
Examples of reflection
Echo and Mirror
20
bending of a wave as it passes from one medium to another
Refraction
21
Example of refraction
1)Talking to a friend who is under water
2) Pencil in a glass of water
22
The disappearance of EM wave into a medium
Absorption
23
Examples of Absorption
Soft pillow (pillow), Black
24
bending, spreading, and interference of waves when they go through a narrow opening
Diffraction
25
Examples of diffraction
Hearing a sound around a corner, reflection on a rippled wave
26
What causes waves to refract?
It bends as it enters a new medium
27
Why does an apple appear red?
Red is being reflected while the rest of the colors are being absorbed (OYGBIV)
28
What causes sound?
Vibrations
29
How are wavelength and frequency related?
Short wavelength: High frequency
Long wavelength: Low frequency
30
