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IB Physics SL
Final Review
50
Physics
12th Grade
05/19/2010

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Cards

Term
T or F: 1C=1K
Definition
True
Term
T or F: You can have a negative Kelvin temperature?
Definition
False
Term
What temperature is the classroom?
Definition
295K
Term
If a container of gas at 1 atm is compressed to 1/3 its volume, what is the new pressure?
Definition
3 atm
Term
If pressure on a gas is tripled, volume is ________.
Definition
reduced by one-third
Term
Why does an increase in volume correspond to a decrease in pressure?
Definition
Because the molecules strike the container wall less often.
Term
T or F: The number of molecules in a mole of a substance is the same for all substances.
Definition
True
Term
If the number of molecules in a container doubles, its pressure _____.
Definition
doubles
Term
If both pressure and volume of a gas double, its Kelvin temperature must _______.
Definition
quadruple
Term
If the temperature of a gas increases slightly, what happens to its volume?
Definition
Also increases slightly
Term
If a gas is compressed to 1/2 volume, does the speed of the molecules change?
Definition
No
Term
The absolute temperature of a gas is directly proportional to its __________.
Definition
kinetic energy
Term
T or F: Because oxygen is 16 times more massive than hydrogen, it has more kinetic energy.
Definition
False
Term
What is the smallest unit of heat energy?
Definition
Joule
Term
What is the measure of the average kinetic energy of individual molecules?
Definition
temperature
Term
The internal energy of an ideal gas depends on its ______.
Definition
temperature
Term
Why don't ocean temperatures vary drastically?
Definition
Water has a relatively high specific heat.
Term
T or F: Temperature changes during a phase change.
Definition
False
Term
What is the heat required to change a substance from a solid to a liquid called?
Definition
heat of fusion
Term
What is the heat required to change a substance from a liquid to a vapor?
Definition
heat of vaporization
Term
T or F: Heat energy enters a substance when it melts.
Definition
True
Term
T or F: Heat energy leaves a substance when it freezes.
Definition
True
Term
T or F: Heat energy leaves a substance when it evaporates?
Definition
False
Term
T or F: Heat energy enters a substance when it condenses.
Definition
False
Term
Why would a piece of metal feel colder on a cold day than a piece of wood?
Definition
It has more thermal conductivity.
Term
What is the process whereby heat flows by means of molecular collisions called?
Definition
conduction
Term
T or F: Isothermal means "change in temperature".
Definition
False
Term
What is it called when a gas exchanges no heat with its surroundings?
Definition
adiabatic
Term
T or F: Isobaric means "no change in pressure".
Definition
True
Term
Is it possible to transfer heat from a cold reservoir to a hot one?
Definition
Yes, but work will have to be done.
Term
If an atom has more electrons than protons, it is a _____.
Definition
negative ion
Term
If electrons are tightly bound to the nuclei, the material is an ______.
Definition
insulator
Term
If electrons are loosely bound to the nuclei, the material is a _______.
Definition
conductor
Term
What are the units for a Coulomb?
Definition
Nm^2/C^2
Term
If the charges of two objects are doubled, the force between them _________.
Definition
quadruples
Term
T or F: Electric charge is a vector.
Definition
False
Term
Can a zero electric field exist?
Definition
No
Term
T or F: Electric potential is a vector.
Definition
False
Term
One J/C is also one ____.
Definition
volt
Term
For a proton moving in the direction of the electric field, its potential energy ______ and its electric potential ________.
Definition
decreases, decreases
Term
One C/V =
Definition
farad
Term
An electron-volt is a unit of ______.
Definition
energy
Term
T or F: Work is required to move along an equipotential surface.
Definition
False
Term
1 C/s =
Definition
ampere
Term
T or F: The resistivity of a wire depends on its material.
Definition
True
Term
1 W =
Definition
1 V*A
Term
1 kW/h =
Definition
3,600,000 J
Term
T or F: When resistors are in series, the current flowing in each one is the same.
Definition
True
Term
T or F: Emf is when no current flows to an external circuit.
Definition
True
Term
T or F: All electromagnetic waves travel through a vacuum at the same speed.
Definition
True
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