Critical Thinking
What are some examples of waves in everyday life?
Varies...
Matter
physical substance in general, as distinct from mind and spirit; (in physics) that which occupies space and possesses rest mass, especially as distinct from energy.
What is an example of radio waves?
In addition to being used to send radio signals, radio waves are used to send WiFi signals, phone calls, and text messages.
What does "Lamda" stand for?
wavelength
How many significant figures are here? "0.1"
1
Do waves move matter as they travel?
No
Frequency
the rate at which a vibration occurs that constitutes a wave, either in a material (as in sound waves), or in an electromagnetic field (as in radio waves and light), usually measured per second.
What is an example of a micro-wave?
Microwave ovens use microwaves to heat up food.
what does "T" stand for?
period
How many significant figures are here? "12"
2
How do the terms light, radiation, and waves relate to one another?
They all fall under the electromagnetic spectrum and are related to one another
Amplitude
the maximum extent of a vibration or oscillation, measured from the position of equilibrium.
Where are infrared waves used ?
Infrared waves can be detected by a thermal imaging camera and shown as different colors on a screen. Your TV remote also uses infrared waves to send signals that control your TV.
what is the equation for wave calculations?
Speed of a wave = wavelength x frequency
How many significant figures are here? "0.02304
4
What makes one wave different from another?
Size and Length
Electromagnetic spectrum
the entire distribution of electromagnetic radiation according to frequency or wavelength.
Where do we encounter UV waves?
The Sun
What is frequency measured in?
Hertz
How many significant figures are here? "1.0003"
5
Microwaves are very efficient at heating water, but all electromagnetic waves can cause matter to heat up. Why is this?
Waves cause the atoms to vibrate, hence they create heat by friction.
Electromagnetic radiation
a type of energy that is all around us and takes many forms, such as radio waves, microwaves, X-rays and gamma-rays
In the visible light wave spectrum, which color has the longest wave?
Red
A wavelength along a guitar string has a frequency of 540 HZ and a wavelength of 2.5 meters. Calculate the speed of the wave.
1350 m/s
How many significant figures are here? "0.000000001"
1