Review of key terms and equations learned in quarter 1 of Physics.
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| physics | the study of the physical world
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| branches of physics | mechanics, thermodynamics, vibration and waves, optics, electricity and magnetism, relativity, and quantum mechanics
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| scientific method of problem solving | state the problem
gather information
form hypothesis
test hypothesis
analyze data
draw a conclusion
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| experiment | procedure for testing hypothesis
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| variable | quantity that can change
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| independent vs. dependent variable | independent variable is the variable that you change and the dependent variable is the one you measure
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| control variable | standard by which results are compared
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| model | idea, system, or structure that represents reality
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| standard | quantity people agree on to use for comparison
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| measurement systems | English system (ft., cup, gallon, etc.)
Metric system ( m., g., Celcius, etc.)
SI system (m., Kg., K, etc.)
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| volume | space occupied by an object
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| length | distance between two points
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| mass | amount of matter in an object
measured in g, Kg, cg, mg, etc. (SI unit=Kg)
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| density | mass per unit volume
measured in g/cm^3, g/mL, kg/m^3, ect
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| temperature | SI unit=K
0 K=-273°C=-460°F
100°C=212°F=373 K
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| SI prefixes and conversions | G--M--KHD(b)dcm--μ--n
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| scientific notation | 1=1x10^0
10=1x10^1
100=1x10^2
.1=1x10^-1
.01=1x10^-2
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| accurate | how right or wrong you are
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| precision | refinement of a measurement
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| significant figures | -all non-zero digits
-not leading zeros
-yes captive zeros
-trailing sometimes
5.200 - yes
5200 - no
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| derived units | combination of units
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| mechanics | physics of motion and forces
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| kinematics | mechanics describing motion with no regard to causes
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| frame of reference | structure used in an experiment to show relationship between objects
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| scalar | has a magnitude but no direction
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| vector | has both a magnitude and direction
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| resultant | vector representing sum of two or more vectors
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| trajectory | parabolic path
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| projectile | object projected into space by the exertion of a force
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| angle at which projectiles are launched the farthest | 45°
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| force | push or pull
SI unit=N
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| contact forces | forces between objects that are touching
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| field forces | forces acting over a distance
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| fundamental forces | - electromagnetic force
- gravity
- strong nuclear force
- weak nuclear force
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| equilibrium | when the sum of all forces acting on an object is 0
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| inertia | tendency of an object to resist change in motion
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| Newton's first law of motion | motion will not change without external forces acting on it
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| Newton's second law of motion | sum of all forces= mass x acceleration
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| Newton's third law of motion | everything has an equal and opposite reaction
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| energy | ability to cause change
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| potential energy | stored energy
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| acceleration of gravity | 9.81 m/s^2
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| free fall | motion under the influence of gravity only
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| elastic potential energy vs. gravitational potential energy | elastic potential energy measures stored energy in a spring and gravitational potential energy has to do with how high above ground you are
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| mechanical energy | sum of kinetic energy, elastic potential energy and gravitational potential energy
(ME is conserved in the absence of friction)
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| power | rate at which work is done
SI unit=watts
English unit=horsepower (hp)
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| law of conservation of momentum | initial momentum=final momentum
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
fiona82
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