All Flashcards
Label the axes of a diagram representing an electromagnetic wave.
1: Electric field, 2: Magnetic field, 3: Direction of propagation.
Label the parts of the electromagnetic spectrum diagram from longest to shortest wavelength.
1: Radio waves, 2: Microwaves, 3: Infrared, 4: Visible, 5: Ultraviolet, 6: X-rays, 7: Gamma rays.
Label the visible light spectrum in order of decreasing wavelength.
1: Red, 2: Orange, 3: Yellow, 4: Green, 5: Blue, 6: Indigo, 7: Violet.
Label the electric and magnetic field vectors in a diagram of an electromagnetic wave.
1: Electric field vector (E), 2: Magnetic field vector (B).
Label the crest and trough of a wave.
1: Crest (highest point), 2: Trough (lowest point).
What is the effect of oscillating electric and magnetic fields?
The creation and propagation of electromagnetic waves.
What happens when electromagnetic waves encounter a medium?
They can be absorbed, reflected, or refracted.
What is the effect of shorter wavelength on electromagnetic radiation?
Higher frequency and higher energy.
What happens when visible light passes through a prism?
It is separated into its constituent colors (ROY G. BIV) due to refraction.
What is the effect of increasing the frequency of an electromagnetic wave?
It increases the energy of the wave.
What is the key difference between electromagnetic and mechanical waves?
Electromagnetic waves can travel through a vacuum; mechanical waves require a medium.
Compare radio waves and gamma rays in terms of wavelength.
Radio waves have the longest wavelengths; gamma rays have the shortest wavelengths.
Compare the speed of electromagnetic waves in a vacuum versus in a medium.
Electromagnetic waves travel at their maximum speed in a vacuum. Their speed decreases in a medium.
Compare infrared and ultraviolet waves in terms of frequency.
Ultraviolet waves have a higher frequency than infrared waves.
Compare X-rays and visible light in terms of energy.
X-rays carry much more energy than visible light.