physical science final exam review

63 terms by pmomber

Create a new folder

Advertisement Upgrade to remove ads

precision

REFERS TO HOW CLOSE A SERIES OF MEASUREMENTS ARE TO ONE ANOTHER

accuracy

How close a measurement is to the true value

scientific notation

A method of writing or displaying numbers in terms of a decimal number between 1 and 10 multiplied by a power of 10.

scientific method

a method of investigation involving observation and theory to test scientific hypotheses

speed formula

S=D/T

distance

size of the gap between two places

acceleration

an increase in speed

velocity

speed in a given direction

displacement

the distance and direction of an object's change in position from the starting point

time graph

a graph that represents data that occur over a specific time

waves

A disturbance that transfers energy from place to place.

transverse waves

a wave in which the particles of the medium move perpendicularly to the direction the wave is traveling

longitudinal waves

a wave in which the particles move parallel to the path of the wave

inertia

the tendency of a moving object to continue in a straight line or a stationary object to remain in place

frequency

the number of complete wavelengths that pass a point in a given time

wavelength

the distance (measured in the direction of propagation) between two points in the same phase in consecutive cycles of a wave

pitch

the property of sound that varies with variation in the frequency of vibration

amplitude

the height of a wave's crest

light

electromagnetic radiation that can produce a visual sensation

sound

the particular auditory effect produced by a given cause

medium

the material through which a wave travels

doppler effect

change in the apparent frequency of a wave as observer and source move toward or away from each other

electromagnetic spectrum

the entire frequency range of electromagnetic waves

intensity

the amount of energy transmitted (as by acoustic or electromagnetic radiation)

reflection

the image of something as reflected by a mirror (or other reflective material)

converging lens

lens such that a beam of light passing through it is brought to a point or focus

diverging lens

a lens such that a parallel beam of light passing through it is caused to diverge or spread out

angle of incidence

the angle between an incoming wave and an imaginary line drawn perpendicular to the surface of the new medium

endothermic reaction

a chemical reaction accompanied by the absorption of heat

exothermic reaction

a chemical reaction accompanied by the evolution of heat

balancing chemical equations

keep mass of products and reactants the same by adjusting coefficients as necessary

neutrons

the particles of the nucleus that have no charge

protons

Positively charged particles

electrons

negatively charged particles

atomic number

the number of protons in the nucleus of an atom

atomic mass

Total mass of the protons and neutrons in an atom, measured in atomic mass units

binary compunds

one that is composed of two elements

covalent bond

a chemical bond that involves sharing a pair of electrons between atoms in a molecule

ionic bond

a chemical bond in which one atom loses an electron to form a positive ion and the other atom gains to electron to form a negative ion

valence electons

one of the electrons farthest away from the nuclues atom

isotope

one of two or more atoms with the same atomic number but with different numbers of neutrons

ion

atom that has a positive or negative charge

energy forms

gravitational energy, kinetic energy, heat, elastic energy, electrical energy, chemical energy, radiant energy, nuclear energy, and mass energy

law of conservation

matter cannot be created or destroyed

kinetic energy

energy of motion

potential energy

stored energy

conduction

the transfer of energy or heat through a material

states of matter

solid, liquid, gas

phase changes

the reversible physical change that occurs when a substance changes from one state of matter to another. Melting, freezing, vaporization, condensation, sublimation, and deposition are six common...

phase change diagram

gives the temperature and pressure at which a substance exists as a solid, liquid or gas.
- the lines between each region is where the two phases exist in equilibrium.

acid

any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt

base

any of various water-soluble compounds capable of turning litmus blue and reacting with an acid to form a salt and water

pH

a value that indicated the acidity or alkalinity of a solution on a scale of 0-14, based on the proportion of H+ ions.

circular motion

Type of motion where velocity is constantly changing because direction is continuously changing

newton's laws of motion

Laws proposed by Isaac Newton that explain how force and motion work.

newton's universal law of gravitation

states that every object in the universe attracts every other object

vectors

shows magnitude and a direction of a force

electricty

the energy of the flow of electrons.

parallel circuit

a closed circuit in which the current divides into two or more paths before recombining to complete the circuit

series circuit

a circuit having its parts connected serially

open circuit

an incomplete electrical circuit in which no current flows

closed circuit

a complete electrical circuit around which current flows or a signal circulates

short circuit

a connection that allows current to take an unintended path

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set