Y1 Density + Waves Flashcards
Pretty self explanatory innit
True/False: Weight is another name for gravitational force
True
What is a transverse wave?
A wave in which the direction of movement of the particles is perpendicular to that of the wave.
What information can be obtained directly from a displacement-time graph?
Amplitude, Period
What is a pressure-distance graph?
A graph for longitudinal waves that shows the regions of negative and positive pressure in relation to wavelength
True/False: With water waves, the deeper the water, the slower the wave
False
What is a wavefront?
What you see when you look at a wave from the front
https://byjus.com/question-answer/what-is-the-wave-front-of-the-light-waves/
What is the range of human hearing?
20Hz to 20kHz
What is the order of the EM spectrum?
Gigachad X-Men usually vomit in my room (Gamma, X-Ray, Ultraviolet, Visible, Infrared, Microwaves, Radio)
Which EM waves are the most damaging?
Higher-frequency waves (Gamma, X-Ray etc.)
What are some uses for Microwaves?
Satellite communication, heating up food
What are some uses for Infrared Radiation?
Medical treatment
What is the spectrum of visible light?
400nm to 700nm
What is mass?
A measure of matter in an object
When is an object considered floating?
When any part of it is above the surrounding fluid
Why can objects with less mass be moved more easily?
They have less inertia
How can you use a picture of a ripple tank to compare a water wave’s speed?
More space between lines –> longer wavelength –> faster because frequency is unchanged
How can ultrasound detect a fetus?
The machine vibrates, producing a series of low pressure regions known as rarefactions and high pressure regions known as compressions. These regions travel forward in the mother’s body and bounce back once they hit a dense object.
What are light (EM) waves made of?
An electric field and a magnetic field
