Term
generalized mental image of an object
A deginition
impression
concept
mental picture |
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process of comparing a property to a well-defined and agreed-upon
measuremnet
refreral
magnittude
comparison |
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realtionship bewteen two numbers that usaully obtained by dividing one number by the other
ratio
divided size
number free
eqaution |
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5-km is the same as _____meter
0.005m
500m
0.05m
5000m |
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sceientific law can be expressed
+written concept
+eqaution
+a gragh
all |
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Definition
all
written, equation , a graph |
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how fast an object is moving in a particular direction
+speed
+velocity
+acceleration
+none of the above |
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basic differnce between instantaneous and average speed
A instantaneous speed is always faster than the average
Baverage speed is total distance over total time of trip
C average speed is sum of the two divied by 2
D final speed is always the fastest speed |
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Definition
| average speed is for a total distance over total time of a trip |
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two objects are released from rthe same height at the same time and one has twice the weight of the other...What will happen
A heaviest hits 1st
B lighter hits 1st
C they bothe hit same time
D depend on on speed traveling |
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Definition
| they both hit the ground at the same time |
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quantity of 5m/s is a measurement of
A metric area
B acceleration
C speed
D velocity |
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In free fall, an object is seen to have a
Aconstant velocity
B constant accerlration
C increasing acceleration
Ddecreasing acceleration |
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Definition
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Term
| Newtons 1st law of motion |
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Definition
| tendeancy of a moving or stationary object to resist any change in its state of motion |
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| metric unit is used to express a measure of weight |
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Definition
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| Newton's law of grativity considers 2 masses because |
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Definition
| both masses contribute equally to force of attraction |
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| mechanical work ,pushing on a rock accomplishes no work unless there is |
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| metric unit of a joule (J) is a unit of |
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Definition
| potential, work ,kinetic energy |
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| power rating of 1 joule per sec is |
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Definition
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| Newton's 3rd law od motion states the the forces occur in matched pairs that act in opposite directions bewteen 2 differnt bodies...Tis happens |
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Definition
| everytime 2 bodies interact |
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| Doubling the distance between the center of an orbiting satelite and the center of the earth will result in what change in the gravitional attraction of the earth for the satelite? |
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| In all of our energy usees, we find that |
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Definition
| the total amount of energy is constant in all situations. |
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| hrenhit thermometer scale is |
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Definition
| no more accurate than the Celsius scale |
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Definition
| is the total internal energy of an object |
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Definition
| the numbers relatedt to the boiling and freezing of water |
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Term
| specific heat of copped is 0.093 cal/gC and the specifi heat of aluminum is 0.22 cal/g. The same amount of energy applied to eqaul masses, say 50.0 ng of copper and aluminum |
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Definition
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| transfer of heat that takes place by the movement of groups of molecules with higher kinetic energy |
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Definition
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Term
| internal energy refers to the |
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Definition
| total vibrantional , rotational and translational kinetic energy of molecules |
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Term
| External energy refres to the |
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Definition
| total potential energy and kinetic energy of an object that you can measure directly |
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| The transfer of heat that takes place by energy moving through space |
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| The number of vibrations that occur in 1 sec |
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Definition
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| Sound waves with frequenies greater than 20,000Hz |
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Definition
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Term
| reflected sound that reaches the earwithin 0.1 s after orignal sound results |
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Definition
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| The wave front of a refracted sound bends toward |
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Definition
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| Amoving soucre of sound or a moving obsever experiences tge apparentshift in frequency |
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Definition
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| A rocket traveling at 3x the speed of sound is traveling at |
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Definition
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| The characteristic of a wave that is responsible for what you interpret as pitch is the wave |
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Which of the following is luminous?
A Moon
B Mars
C Sun
D All |
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Definition
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| A source of light given off as a result of high temps |
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| An idealized material that absorbs and perfectly emits electromagnetic radiation |
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| Material that do nort allow the trasmission od light |
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Definition
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| Refraction of light happens when light undergos |
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Definition
| change of speed between two transparent materials |
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Term
Any part of electormagneteic spectrum, including the colors of visible light, can be measured in units of
A wavelength
B frequency
C Energy
D any of the above |
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Definition
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Term
| light is considered to be packets of energy with frequncy related to its energy |
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Definition
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| Polarization of light is best explained |
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Definition
| vibrating waves in one plane |
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| The separation of white light into it componet |
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Definition
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| The part of the electromagnetic spectrum that our eyes can detect is |
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Definition
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| Then sky appears to be blue when the sun ishigh in the sky |
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Definition
| blue light is scattered more tha the other colors |
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Term
the electromagnetic wave with the lowest energy
A radio waves
B infrared light
C ultraviolet light
D X-rays |
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| An eletric feild describes the condition of space around |
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Definition
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| changed by destructive interference of siund waves |
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| Electrostatic charge results from |
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Definition
| transfer or redistribution of electrons |
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| The unit of electric chrarge is the |
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Definition
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| Material that has eletrons that are free to move throught out the material is |
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Definition
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| An example of an electrical insulator |
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Definition
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| THe electrical resistace of conductor is measured in units |
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Definition
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| If you mutiple volts time amps, the answer will be in units of |
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Definition
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Term
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Definition
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| Units of joules per second is a measure |
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Definition
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Magnetite is a natural magnet that attracts
A iron
B cobalt
C nickel
All of the above |
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Definition
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Term
| The speaker in the stero system works by action of |
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Definition
| an electromagnet pushing and pulling on a permanet magnet |
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