Vocab
What describes the height of a wave from the bottom to the top?
amplitude
Fill in the blank: A Faraday Cage is an enclosure designed to _____ electromagnetic fields?
block
What is the term for the range of all types of electromagnetic radiation?
Electromagnetic spectrum
What type of radiation has enough energy to ionize atoms?
ionizing radiation
Newtons first law
an object in motion stays in motion unless acted on by an outside force
What is the term for the number of cycles of a wave that pass a fixed point in a unit of time?
frequency
From what type of materials is a Faraday cage made?
Conductive materials, such as metal mesh or sheets
Name a common use of microwaves outside of cooking.
Satellite communications or radar
What is the definition of radiation in the context of physics?
The emission or transmission of energy in the form of waves or particles.
Newtons second law
F= m * a
What term is used to describe the resistance to motion in a wave?
damping
Who invented the Faraday cage?
Michael Faraday
Describe the difference between absorption and reflection of waves.
Absorption involves the wave's energy being taken up by the medium, while reflection involves the wave bouncing back from a surface.
Give an example of non-ionizing radiation.
microwaves or radio waves
Newtons third law
Every action has an equal and opposite reaction
In the context of waves on a string, what factor, related to the force applied to stretch the string, affects the speed of the wave?
tension
How does a Faraday cage protect its contents from external electromagnetic fields?
By redistributing electromagnetic charges on the cage's exterior, thus canceling the fields' effects inside
What is the main difference between mechanical and electromagnetic waves? (specifically regarding their propagation medium)
Mechanical waves require a medium, while electromagnetic waves do not
Why is ionizing radiation harmful to living organisms?
It can remove tightly bound electrons from atoms, potentially causing cellular damage or mutations.
Name the three primary states of matter
Solid liquid and gas
What is the term for the time it takes for one complete cycle of a wave to pass a given point?
period
Why does a Faraday Cage work?
The outside conducts electricity and the electrons move to cancel out any electric field.
What determines whether a wave will be absorbed or reflected by a material?
The material's properties, such as its conductivity, permittivity, and permeability.
How is the electromagnetic spectrum ordered?
By wavelength, from long to short.
What is the fourth state of matter
Plasma