CHAPTER 3 Flashcards
x axis is ____
Horizontal
y axis is ____
Vertical
Direct relationship
As X axis increases, so does the value of Y axis
Inverse relationships
As X axis increases, the value of Y axis decreases
electromagnetic radiation can be defined as …?
an electric and magnetic disturbance traveling through space at the speed of light
Define electromagnetic spectrum
the way of ordering or grouping different electromagnetic radiations
all members of the electromagnetic spectrum have the same velocity which is …?
the speed of light
All members of the electromagnetic spectrum vary in …?
- Energy
- Wavelength
- Frequency
Define wavelength
distance between from one peak to another
Define Amplitude
The height of the wave
Frequency is ..?
number of waves passing at a given point per second
As wavelength increases, Frequency ___.
Decreases
As wavelength decreases, Frequency ___.
Increases
Electromagnetic spectrum energy from lowest to highest is …?
- Radio waves
- Microwaves
- Infrared light
- Visible light
- Ultraviolet light
- X-rays
- Gamma Rays
Wavelengths of the electromagnetic spectrum ranges from …?
10^6 to 10^-16 meters
Frequencies range from …
10^2 to 10^24 Hertz (Hz)
Energy ranges from …
10^-12 to 10^10 Electron volts (eV)
Velocity Formula
Velocity = Frequency x wavelength
electromagnetic radiation is..?
exhibits properties of both a particle and a wave, depending on its energy and environment, called Wave - particle duality
X-rays and Gamma Rays act more like ___.
Particles and has higher energy photons
Radio waves and microwaves act like ___.
waves and has lower energy photons
The intensity of ___ diminishes over ___.
- Light
- Distance
Inverse square law
the intensity of light diminishes by a factor of the square of the distance from the source
What are Alpha Particle characteristics?
• have short wavelengths
• can ionize matter
• are 2 protons bound by 2 neutrons
• positive charged
What are Beta Particle characteristics?
• can penetrate light materials
• can ionize matter
• both negative and positive charged
• called positron
What is the inverse square law formula?
Initial intensity / final intensity = (final distance/ initial distance)^2
What is the difference between electromagnetic & mechanical energy?
Electromagnetic energy does not require a medium in which to travel
