ILTS Content Test Elementary Ed(305)-Part 3/6 CORRECT 100%
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Course
ILTS 305
Institution
ILTS 305
4 basic laws of thermodynamics - ANSWER zeroth law: states that 2 objects in thermodynamic equilibrium with a 3rd object are also in equilibrium with each other
1st law: states that neither mass nor energy can be destroyed; only converted from 1 form to another(conservation of energy)
2nd law...
ILTS Content Test Elementary
Ed(305)-Part 3/6 CORRECT
100%
4 basic laws of thermodynamics - ANSWER zeroth law: states that 2 objects in thermodynamic
equilibrium with a 3rd object are also in equilibrium with each other
1st law: states that neither mass nor energy can be destroyed; only converted from 1 form to
another(conservation of energy)
2nd law: states that the entropy of an isolated system can only increase; heat is not transferred from low
temp system to a higher temp system one unless additional work is done
3rd law: states that as a temperature approaches absolute 0, entropy approaches a constant minimum;
system can not be cooled to absolute 0.
compare and contrast heat and temperature - ANSWER heat: energy transfer from 1 body or system to
another due to thermal contact
temperature: measurement of an object's stored heat energy
mass - ANSWER measures how much of a substance is in an object
weight - ANSWER measures the gravitational pull of the earth on an object
density - ANSWER a measure of the amount of mass in a given volume
, D=m/V
volume - ANSWER measures the amount of space taken up
specific gravity - ANSWER measures the ratio of a substance's density to the density of water
thermal contact - ANSWER energy transferred to a body by a means other than work
heat - ANSWER The energy transferred between objects that are at different temperatures
Models for the flow of electric charge - ANSWER used to explain the flow of electric current, potential,
circuits include water, gravity and roller coasters
magnetic field - ANSWER motion of subatomic structures(nuclei and electrons) produce magnetic field;
formed not only by magnetic material but also by electric current flowing through a wire
magnetic moment - ANSWER The strength of a magnetic field
electric charges as they relate to atomic structure - ANSWER electric force: attractive force between the
electrons and the nucleus
*electrical field: positive or negative charge creates a field of sorts in the empty space around it
*electric charge: measured with unit Coulomb(C) is the amount of charge moved in 1 second by a steady
current of one ampere(1C=1Ax1s
electric current - ANSWER The continuous flow of electric charges through a material
rate of flow of electric charge - ANSWER expressed using the ampere(amp or A) and can be measured
using an ammeter
, simple circuit - ANSWER a circuit that has only one pathway for electricity to flow through.
example: flow from 1 terminal of a car battery to another
magnet - ANSWER a piece of metal, such as iron, steel or magnetite that can affect another substance
within its field of force that has like characteristics
2 poles: north and south
magnetism - ANSWER The force of attraction or repulsion of magnetic materials
magnetic domain - ANSWER occurs when the magnetic fields of atoms are grouped and aligned. These
groups form what can be thought of as miniature magnets within a material. This is what happens when
an object like an iron nail is temporarily magnetized. Prior to magnetization, the organization of atoms
and their various polarities are somewhat random with respect to where the north and south poles are
pointing. After magnetization, a significant percentage of the poles are lined up in one direction, which is
what causes the magnetic force exerted by the material.
motion - ANSWER change in location of an object and is the result of an unbalanced net force acting on
the object
displacement - ANSWER Distance and direction of an object's change in position from the starting point.
gravitational force - ANSWER a universal force that causes every object to exert a force on every other
object
F=Gm1m2/r^2
m1 and m2 are the masses of two objects
r is distance between them
, G is the gravitational constant G=6.672x10^-11 N-m^2/kg^2
force of gravity is calculated as F=mg
g=9.81m/s^2
pitch - ANSWER quality of sound determined by frequency
Loudness - ANSWER human perception of sound intensity
sound intensity - ANSWER measured as the sound power per unit area and can be expressed in decibels
Timbre - ANSWER human's perception of the type or quality of sound
oscillation - ANSWER A measurement, usually of time, against a basic value, equilibrium, or rest point.
doppler effect - ANSWER the effect the relative motion of the source of the wave and location of the
observer has on waves
Waves - ANSWER A disturbance that transfers energy from place to place
mechanical waves - ANSWER waves that transfer energy through matter
electromagnetic waves - ANSWER A form of energy that can move through the vacuum of space.
transverse wave - ANSWER provides a good illustration of the features of a wave, which include crests,
troughs, amplitude and wavelength
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