Waves Flashcards
1
Q
Sound
Description (3)
A
- Caused by a vibration
- Longitudinal waves
- Mechanical waves (need a medium to pass through)
2
Q
Focus
Definition
A
The point of origin of an earthquake
3
Q
Epicenter
Definition
A
The point on the surface of the Earth directly above the focus
4
Q
Primary Waves
List
A
- Longitudinal
- Faster
- Can travel through both solid and liquid
5
Q
Secondary wave
List
A
- Transverse
- Slower
- Can only travel through liquid
6
Q
Reflect
Definition
A
To let something bounce off of a surface
7
Q
Absorb
Definition
A
When something is taken into something
8
Q
Transmit
Definition
A
When something passes throiugh something
9
Q
Electromagnetic Spectrum
List
A
- All transverse
- Consist opf oscilating electric and magnetic fields
- Can travel through a vacuum
- Can travel at the same speed in a vacuum (3 x 10 to the power of 8 m/s)
10
Q
Radio Waves
Wavelength range, Uses, Danger
A
- 1m to 100,000m
- Telecommunication
- None
11
Q
Microwaves
Wavelength range, Uses, Dangers
A
- 0.001m to 1m
- Telecommunication, cooking
- Cancer
12
Q
Infra-red radiation
Wavelength range, Uses, Dangers
A
- 740nm to 0.01m
- TV remotes, cooking
- Can burn
13
Q
Visible light
Wavelength range, Uses, Dangers
A
- 370nm to 740nm
- Seeing
- Eye damage
14
Q
Ultraviolet light
Wavelength range, Uses, Dangers
A
- 3x10 to 17 - 8x10 to 14
- Counterfeit scanning
- Skin cancer
15
Q
X-ray
Wavelength range, Uses, Dangers
A
- 10 to -12 - 10 to -7
- Medical imagery, Scanning
- Cancer
