electromagnetic waves
What are electromagnetic waves
"combination of electric and magnetic field waves produced by moving charges."
What are mechanical waves
A mechanical wave moves energy through a medium
What is the difference between electromagnetic and mechanical waves
Mechanical waves cannot travel without the support of a medium, unlike electromagnetic waves
what is the highest point of a wave
crest
how many people have walked the moon
12
How are they formed
Accelerating charges produce changing electric and magnetic fields.
How are they produced
"Mechanical waves are produced when particles vibrate in a medium"
which of the two waves travels with the speed of light
Electromagnetic
what is a wavelenght
the distance between crest
who invented the thermometer
Galileo
What is the electromagnetic spectrum
Electromagnetic spectrum is the range of electromagnetic radiation.
Name an example of a mechanical wave
Sound, springs, stadium waves, or water
Which wave type has both traverse and longitudinal waves
mechanical waves
what is frequency?
The amount of waves in a certain amount of time
True or false: Edward Jenner discovered the vaccination against smallpox in 1796.
True
Name 4 examples electromagnetic radiation
Gamma rays, UVs, Microwaves, Radio waves, Infared, X-rays
true or false, mechanical waves do not require a medium
False
which type of wave is measured in Hertz (Hz)
Both
define oscillating
"moving back and forth at a regular speed"
In 1918 the pandemic name Spanish Flu killed what percentage of the world population?
1%
What kind of electromagnetic radiation has the shortest wavelength? BONUS: The longest?
a- Gamma Rays
b- radio waves
name one of the three mechanical wave types
Surface, Traverse, Longitudinal
Do we use electromagnetic or mechanical waves more in our daily life.
electromagnetic
What is the difference between a traverse wave and a longitudinal wave
"In a longitudinal wave, the medium or the channel moves in the same direction with respect to the wave. Here, the movement of the particles is from left to right and forces other particles to vibrate. In a transverse wave the medium or the channel moves perpendicular to the direction of the wave."
What year was the great fire of london
1666