Module 12
A small "package" of light.
What is a photon?
What 3 particles make up an atom?
protons, neutrons and electrons
What is a wave with a direction of propagation that is perpendicular to its direction of oscillation?
Transverse wave
What are the shortest wavelengths on the electromagnetic spectrum? Gamma rays
Gamma rays
When 2 or more nuclei fuse together to make a larger nucleus
Fusion
What is the amount of charge that travels past a fixed point in an electric circuit each second?
Electrical current
When an atom has too many or too few neutrons it is called _______
Radioactive
What is the indication of how high or low a sound is, which is primarily determined by the frequency of the sound wave?
Pitch
What is a lens that focuses horizontally traveling light rays through a single point? Converging lens
Converging lens
Nuclear fusion
What is the process by which two or more small nuclei fuse to make a bigger nucleus?
What is the ability of a material to impede the flow of charge?
Resistance
What is the center of an atom and contains protons and neutrons?
Nucleus
What is any speed that is faster than the speed of sound in the substance of interest?
Supersonic speed
A transverse wave composed of an oscillating electric field and a magnetic field that oscillates perpendicular to the electric field is called a ... ? Electromagnetic wave
Electromagnetic wave
Name the 4 types of galaxies
Milkey Way, Lenticular, Elliptical, irregular
What is the first rule of electrical charge?
Like charges repel one another
What is a short-range, attractive force that attracts protons and neutrons to one another?
nuclear force
The relationship that wavelength and frequency have to one another is known as______
Inversely proportional
What are cells that are sensitive to color?
Cone cells in the retina
The true explosion of a star
supernova
What is charging an object by allowing it to come into contact with an object that already has an electrical charge?
Charging by conduction
What are atoms with the same number of protons but different numbers of neutrons?
Isotopes
What governs how loud a sound is? Amplitude
Amplitude
whatever angle the light had as it went into the mirror (the angle of incidence) was the same as the angle of light reflecting from the mirror (the angle of reflection).
Law of Reflection
What is a large ensemble of stars, all interacting through the gravitational force and orbiting around a common center
Galaxy