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UVU Physical Science Chapters 10-17
uVU Physical Science Chapters 10-17 / BYU textbook
101
Science
Undergraduate 1
07/18/2010

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Term
Mechanical Waves
Definition
A traveling disturbance in material that transports energy.
Term
Compression Wave
Definition
The wave in which the molecules of the medium vibrate in the same direction as the wave propagates. Also know as a longitudinal/compression wave. They can travel through all types of matter. Sound is a compression wave.
Term
Shear Wave:
Definition
A wave in which the molecules of the medium vibrate at right enables to the direction the wave propagates-also known as a transverse wave. They only propagate through solids.
Surface Wave: A wave that travels along the surface of the medium. A guitar string.
Term
Medium
Definition
What waves go through. What passes things along.
Term
Amplitude:
Definition
The maximum amount that a particles will displace from its normal, undisturbed position when a wave passes through it. How far a wave has moved by measuring the middle to the bottom (or bottom to the middle).
Term
Wave Speed
Definition
The rate at which a specific wave disturbance travels from point to point. How fast a wave goes. Speed is always the same in a medium.
Term
Wavelength
Definition
The distance between successive similar parts in a repeating wave. When the frequency is up the wavelength is down.
Term
Frequency
Definition
The number of wave amplitude crests that pass a particular point in space every second. When the frequency is up the wavelength is down. Light = color / Sound = pitch
Term
wave speed =
Definition
wave speed = frequency x wavelength.
Term
Reflection:
Definition
The act of bouncing off a surface. Wave and Particles reflect.
Term
Refraction:
Definition
The act of changing direction when passing from one medium to another. A straw in water. Waves and particles refract.
Term
Diffraction:
Definition
The changing of direction of waves to bend around corners and spread as they encounter obstacles. Waves only.
Term
Interference:
Definition
The canceling and enhancing effect that occurs when two waves move through the same space at the same time.
Term
Interference:
Definition
The canceling and enhancing effect that occurs when two waves move through the same space at the same time.
Term
Constructive Interference
Definition
When two or more waves passing through the same space at the same time both disturb the medium in the same way so that the resultant amplitude is larger than the amplitude of each individual wave separately.
Term
Destructive Interference
Definition
When two or more waves passing through the same space at the same time both disturb the medium in opposite ways so that the resultant amplitude is smaller than the amplitude of each individual wave separately or cancels it out entirely.
Term
Standing Wave
Definition
A wave characterized by lack of vibration at certain points between which areas of maximum vibration occur. A wave that does not move.
Term
Standing Wave
Definition
A wave characterized by lack of vibration at certain points between which areas of maximum vibration occur. A wave that does not move.
Term
The medium light passes through
Definition
Light doesn't pass through a medium. It travels through radiation.
Term
Nodes
Definition
A location of no vibration in a standing wave.
Term
Nodes
Definition
A location of no vibration in a standing wave.
Term
Antinode
Definition
A location of maximum vibration in a standing wave.
Term
Doppler Effect/Doppler shift
Definition
A change in the observed frequency of a wave occurring when the source and observer are in motion relative to each other. When the laves are traveling towards you, the wavelength is shorter and higher. When the waves are traveling away from you the wavelengths are longer, farther apart, and lower in pitch.
Term
speed of light
Definition
3 x 10/8th meters per second
Term
Thomas Young is famous for this:
Definition
The double slit experiment.
Term
Electromagnetic Spectrum
Definition
Radio Waves - Microwaves-Infrared Waves - Visible Spectrum (red, orange, yellow, green, blue, indigo, violet) - ultraviolet radiation -x-rays - gamma rays
Term
Galileo determined light was...
Definition
...fast.
Term
Galileo determined light was...
Definition
...fast.
Term
Romer used what to determine speed of light?
Definition
Jupiter's moons and how they eclipsed.
Term
Fizeau used what to determine the speed of light?
Definition
Moving gears and bouncing light.
Term
Wave Particle Duality
Definition
The state of possessing both wave and particle properties. Light diffracts and interferes, which is how it works like a wave.
Term
The four states of matter
Definition
Solid, Liquid, Gas, Plasma
Term
The four states of matter
Definition
Solid, Liquid, Gas, Plasma
Term
Solid
Definition
A physical state of matter that is characterized by rigidity and resistance to changes in size and shape. Constricted molecules don't move beyond where they are.
Term
Liquid
Definition
A physical state of matter that readily changes shape to match its container but that resists changes in volume. Anything that flows. A slight attraction, molecules can move freely through the liquid.
Term
Gas:
Definition
A physical state of matter that readily changes both shape and volume to match its container. Molecules are able to move freely, they are unbounded.
Term
Plasma:
Definition
A physical state of matter characterized by fluid properties in which positive and negative charges move independently.
Term
Compression Force
Definition
A force that is applied in such a way as to compress a material. Supports solids, liquids, and gasses.
Term
Tension Force
Definition
A force that is applied in such a way as to stretch a material. Supports solids and liquids.
Term
Shear Force
Definition
A force that is applied in such a way as to twist or deform a material. Supports solids only.
Term
Continuous Spectrum
Definition
A spectrum in which the colors blend gradually together without noticeable abrupt changes or missing colors.
Term
Absorption Line Spectrum
Definition
A spectrum showing an almost continuous spectrum, with the exception of a few missing lines of color.
Term
Discrete Spectrum/Emission line spectrum
Definition
A spectrum of separate and distinct colors in which not all color are present and is mostly black.
Term
Conductors
Definition
Materials that conduct electricity in the solid and liquid state.
Term
Ionic Conductors:
Definition
Materials that do not conduct electricity in the solid state, but do when molten or dissolved in water. (such as salt)
Term
Non-conductor
Definition
A material which does not conduct electricity in any of its physical states.
Term
Density
Definition
How much stuff fills the space.
Term
Molecular Model:
Definition
1) Matter consists of tiny particles called molecules. 2) Each different kind of matter consists of a different kind of molecule. 3) The molecules in matter are in constant motion. 4) Molecules move and interact in accord with laws of motion, the laws of force and the laws of observation. 5) They are indivisible (false rule).
Term
Brownian Motion
Definition
The constant, irregular motion of very fine particles (such as fine dust or smoke) suspended in a fluid and observed with a microscope. Brownian motion is taken as evidence for molecules, which collide with the observed particles and cause a jittery motion.
Term
Gas pressure results from...
Definition
...molecules hitting the side of the container.
Term
Temperature is...
Definition
...average kinetic energy. Fast molecules = hot, slow molecules = cold.
Term
Heat Conduction
Definition
Heat conduction occurs from a warm room through a closed window on a cold day because fast molecules transfer energy to slower ones with which they collide, on the average. Heat molecules bump into nearby molecules and get them vibrating.
Term
Molecular Model doesn't explain...
Definition
...plasma.
Term
State Change
Definition
Electric potential energy changes, but kinetic energy stays the same. This explains why there is no measurable kinetic energy increase when two states exists together as states change.
Term
Solar System Model
Definition
A model of the atom in which the electrons orbit the small, dense, positively-charged nucleus in elliptical paths. It didn't explain acceleration around the electron.
Term
Modified Solar System Model:
Definition
The Bohr model with restricted circular orbits of electrons around a dense nucleus. Does not explain shy it is emitting no light or energy in its orbit and why it doesn't collapse into the center.
Term
The Plum Pudding Model
Definition
Created by JJ Thompson. A positive pudding with negative bits scattered in.
Term
Rutherford's experiment
Definition
The rare, backward reflection of alpha particles convinced Rutherford that the atom consisted of a dense, positively charged nucleus.
Term
De Broglie
Definition
Discovered that matter has a wave/particle duality.
Term
Wavelength depends on...
Definition
...momentum.
Term
Probability Wave
Definition
A probability curve that moves in time. At a given moment in time, the places where the wave is high are where the abject associated with the wave is most likely to be found. It is the wave associated with matter.
Term
Heisenberg Uncertainty Principle
Definition
The product of the uncertainty in an object’s position and the uncertainty in its momentum must be greater than or equal to Planck’s Constant. Narrowing down an object’s position makes its momentum less certain. Narrowing down an object’s momentum or speed, makes its position less certain.
Term
Wavelength matter on what scale?
Definition
An atomic scale.
Term
Electrons produce what type of pattern?
Definition
Interference patterns
Term
Quantum Model
Definition
When wave properties are used to explain matter.
Term
Types of orbitals
Definition
s, p, d, f orbitals
Term
S orbital
Definition
I wave (a ball shape). The electron can be next to the nucleus.
Term
P orbital
Definition
2 waves (peanut shape). The electron can't be near the nucleus.
Term
D Orbital
Definition
3 waves (peanut with a donut around the middle a four leaf clover).
Term
Orbital:
Definition
A standing wave giving the probability of finding an electron in various locations around the nucleus of an atom. The electron doesn't move.
Term
Spectroscopy
Definition
The study of the brightness and wavelengths of the different frequencies of light emitted by excited atoms and ions. Emission spectrum = the electron's jump down. Absorption Spectrum = the outside electron's jump up.
Term
Spin:
Definition
A characteristic of an electron giving the direction of its intrinsic magnetic field.
Term
The exclusion principle
Definition
The rule that two electrons can not be in exactly the same state in an atom. In other words no two electrons in the same atom can have exactly the same shell, orbital, and spin values.
Term
Number of electron's in each orbital
Definition
two one electron with an up spin, one electron with a down spin.
Term
Chemistry
Definition
The discipline in which the interactions of atoms with each other are studied.
Term
Element
Definition
Matter that contains only one kind of atom.
Term
Law of Constant Composition
Definition
Substances contain a fixed definite proportion of elements by mass. The same ratio of elements.
Term
Atomic Theory:
Definition
The model that matter is made up of atoms.
Term
Chemical Properties
Definition
Properties associated with the chemical reactivity of a material.
Term
Periodic Law
Definition
The properties of the elements are a periodic function of their atomic masses.
Term
Atomic Number
Definition
The number of protons in a nucleus. This number defines an element.
Term
Metals:
Definition
Elements that are electrical and thermal conductors and can be hammered into thin sheets or drawn into thin wires. Found on the left of the periodic table.
Term
Non-Metals
Definition
elements that do not conduct electricity. Found on the right of the periodic table.
Term
transition metals
Definition
elements in the middle of the periodic table that contain some metal and non-metal properties.
Term
Ionization Energy:
Definition
The amount of energy needed to completely remove an electron from an atom. The energy needed to remove the first electron from a neutral atom varies periodically with atomic number. Elements on the left side of the periodic table require less energy than the elements on the right hand side, which require a lot of energy.
Term
Orbitals match...
Definition
...the Bohr orbits.
Term
Electrons want to be in what level?
Definition
the lowest level.
Term
Atomic Size
Definition
An estimate of the volume occupied by an atom. The number is obtained from the density of the solid state of the element. Left side of the periodic table is the largest of the row. It gets progressively smaller until it jumps up on the next row. New row increases volume.
Term
Columns on the Periodic Table represent...
Definition
...families or groups of elements. They share chemical properties.
Term
Rows on the periodic tables are...
Definition
periods. It is in order of increasing atomic weight. It has slowly changing properties.
Term
Electron Configuration Diagram:
Definition
An enumeration of how electrons populate atomic orbitals that is consistent with the ‘lowest energy filled first” and “exclusion” principles.
Term
Valence Electrons
Definition
One or more electrons in the outermost populated electron shell of an atom. Valence electrons determine an element’s chemical reactivity.
Term
Dmitri Mendeleyev
Definition
the father of the periodic table of elements.
Term
s Orbitals
Definition
Standing waves = 1
Orbital Level = 1
Electrons = 2
Term
P Orbital
Definition
Standing waves = 3
Orbital Level = 2 (shell)
Electrons = 6
Term
D Orbital
Definition
Standing waves = 5
Orbital Level = 3(shell)
Electrons = 10
Term
F Orbital
Definition
Standing waves = 7
Orbital Level = 4 (shell)
Electrons = 14
Term
Orbital Level 1
Definition
s / 1 standing wave/ 2 electron
Term
Orbital Level 2
Definition
s, p/ 4 standing wave/ 8 electrons
Term
Orbital Level 3
Definition
s, p, d/ 9 standing waves/ 18 electrons
Term
Orbital Level 4
Definition
s, p, d, f/ 16 standing waves/ 32 electrons
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