Basics
Mechanical
Electromagnetic
Behavior
Review
100

the maximum extent of a vibration or oscillation, measured from the position of equilibrium.

What is amplitude?

100

An oscillation of matter that transfers energy through a medium.

What is a mechanical wave?

100

Wavelengths from the nominal red edge of the visible spectrum around 700 nanometers to 1 millimeter. Uses include thermal efficiency analysis, environmental monitoring, industrial facility inspections, detection of grow-ops, remote temperature sensing, short-range wireless communication, cooking, spectroscopy, and weather forecasting.

What is infrared radiation?

100
The change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated.
What is reflection?
100

An Earth science concerned with the solid Earth, the rocks of which it is composed, and the processes by which they change over time.

What is geology?

200

a propagating dynamic disturbance (change from equilibrium) of one or more quantities. 

What is a wave?

200

A perceptual property of sounds that allows their ordering on a frequency-related scale.

What is pitch?

200

Visible light color with the highest amount of energy.

What is violet?

200
The change in direction of propagation of a wave due to a change in its transmission medium.
What is refraction?
200

a chemical substance composed of many identical molecules (or molecular entities) composed of atoms from more than one element held together by chemical bonds.

What is a compound?

300

A pair of superimposed periodic waves traveling in opposite directions. The amplitude of vibration has nulls at some positions where the wave amplitude appears smaller or even zero.

What is a standing wave?

300

the reduction of an item's density, the opposite of compression

What is rarefaction?

300

A form of electromagnetic radiation with wavelengths ranging from about one meter to one millimeter. They are widely used in modern technology, for example in point-to-point communication links, wireless networks, radar, satellite and spacecraft communication, medical diathermy and cancer treatment, remote sensing, astronomy, particle accelerators, spectroscopy, industrial heating, collision avoidance systems, garage door openers and keyless entry systems, and for cooking food.

What is microwave radiation?

300
The process by which a beam of light or other system of waves is spread out as a result of passing through a narrow aperture or across an edge, typically accompanied by interference between the wave forms produced.
What is diffraction?
300
Any interaction that, when unopposed, will change the motion of an object.
What is a force?
400
The time for one complete cycle of an oscillation of a wave
What is a period?
400

A moving wave that consists of oscillations occurring perpendicular (or right angled) to the direction of energy transfer.

What is a transverse wave?

400

A condition that is not limited to a specific set of values but can vary, without steps, across a continuum.

What is a spectrum?

400
A phenomenon in which two waves superpose to form a resultant wave of greater, lower, or the same amplitude.
What is interference?
400
the natural science that involves the study of matter's motion and behavior through space and time, along with related concepts such as energy and force.
What is physics?
500

an oscillation of the parts of a fluid or an elastic solid whose equilibrium has been disturbed, or of an electromagnetic wave.

What is a vibration?

500

A mechanical wave that propagates along the interface between differing media, usually as a gravity wave between two fluids with different densities.

What is a surface wave?

500

An elementary particle that is a boson and is the quantum of the electromagnetic field and the force carrier for the electromagnetic force. They are massless, so they always move at the speed of light in vacuum.

What is a photon?

500

The change in frequency of a wave in relation to an observer who is moving relative to the wave source.

What is the doppler effect?

500
All of time and space and its contents.
What is the Universe?
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