WorksheetsPhysical Science Final
Total questions: 112
Worksheet time: 1hrs 24mins
the kinetic theory of matter states that atoms and molecules are
particles of all matter
always in random motion
what compose solids, liquids, and gases
always emitting energy of some form
the warmer an object is, the greater its
thermal energy
conductivity
radiation potential
potential energy
thermal energy is the result of particles having
translational motions
rotational motions
vibratory motions
all of the above
when the piston of a tire pump is pushed down and air inside is compressed, the inside air
cools
warms
increases in pressure but remains at the same temperature
none of the above
the concept defined in terms of kinetic energy per molecule is
temperature
heat
thermal energy
all of the above
temperature is generally proportional to a substance's
vibrational kinetic energy
average translational energy
rotational kinetic energy
thermal energy
whether one object is warmer than another relates most directly to
molecular kinetic energy
molecular potential energy
specific heat capacity
thermal equilibrium
the temperature of absolute zero is
0 kelvin
-273 kelvin
0 celcius
273 celcius
water changes from a liquid to a solid at a temperature of
0 celcius
-273 kelvin
0 kelvin
-273 celcius
water turns to steam at a temperature of
100 C
373K
both of these
none of these
as a gas initially at 0 C is cooled at a constant volume, what quantity decreases by 1/273 for each degree cooled
mass
volume
temperature
pressure
as a gas initially at 0 C is cooled at a fixed volume, what quantity decreases by 1/273 for each degree cooled
mass
volume
temperature
pressure
which of these temperature could result from mixing a container of water at 20 C with one at 24C
19 C
22 C
24 C
more than 24 C
water normally boils at a temperature of
100 C
212 F
373 K
all of these
heat is simply another word for
temperature
thermal energy
thermal energy that flows from hot to cold
any positive temperature
when heat is added to a bucket of 20 C water, there is an increase in
temp only
thermal energy only
temp and thermal energy
neither temp nor thermal energy
the amount of heat transferred to a system can be measured in
watts
kilograms
calories or joules
calories only
if something is cold, it has decreased
kinetic energy
gravitational potential energy
thermal energy
heat
matter does NOT contain
heat
thermal energy
mass
energy
the amount of heat needed to raise the temp of 1 gram of water by 1 C is
1 joule
1 calorie
1 watt
1 newton
which of these is the largest amount of energy
all are the same
1 joule
1 calorie
water has a high specific heat capacity, which means that water
requires a lot of energy in order to increase in temp
gives off a lot of energy in cooling
absorbs a lot of energy for a small increase in temp
all of the above
when a particular substance is said to have a low specific heat capacity, it means that the substance
requires only a little energy in order to increase in temp
gives off only a little energy in cooling
absorbs only a little energy for a small increase in temp
all of these
hot sand cools off faster at night than plants and vegetation. this indicated that the specific heat capacity for sand is
less than that of plant
more than that of plants
likely the same as that off plants
not enough info to answer
if a certain material heats up quickly and cools down quickly, the material likely has
no specific heat to speak of
a low specific heat
a high specific heat
a low density
relative to most liquids, when temp changes, water absorbs or releases
less thermal energy
more thermal energy
the same thermal energy but less joules
the same thermal energy but more joules
climate temp extremes for land masses surrounded by water are normally
less
more
about the same with other factors being equal
none of the above
when the temp of a strip of iron is increased, the strip
gets bigger in every dimension
shrinks in every dimension
gets longer but shrinks in width
gets wider more than it gets longer
a bimetallic strip used in thermostats relies on the fact that different metals have different
specific heat capacities
thermal energies at different temps
rates of thermal expansion
densities
if you increase the temp of a metal ring, the diameter of the hole in the ring
decreases
remains unchanged
increases
may either increase or decrease
water at room temp
expands when heated
is in a liquid state
becomes a bit less dense when heated
all of the above
the density of water at 4 degrees C will slightly decrease when it is
cooled
warmed
either cooled or warmed
none of the above
thermal conduction mostly involves the motion of
electrons
protons
neutrons
ions
when your foot stands on a tile floor, thermal energy
flows from your foot to the tile
flows from the tile to your foot
flows either way depending on the temp of the tile
doesn't flow in this case
when author John walks barefoot across hot wooden coals, he is relying on wood's
good conduction
poor conduction
low specific heat capacity
low radiation
thermal convection is linked mostly to
radiant energy
fluids
insulators
conductivity
warmed air tends to rise due to
buoyancy
momentum gained by added heat
lower conductivity
repulsive force between molecules
when air rapidly expands, its temp normally
increases
decreases
remains unchanged
is unaffected, but not always
which of the following emit radiant energy
ice cubes
the sun
earth
all these and every other object
heat comes from the sun to earth by the process of
conduction
convection
radiation
conduction and convection, through radiation is greater
radiant energy emitted by earth has the name
terrestrial radiation
electromagnetic radiation
heat radiation
earthly radiation
energy radiated by a hot object is carried in
sound waves
electromagnetic waves
both sound and electromagnetic waves
thermal energy
a low temp source radiates relatively
high frequencies of radiation
low frequencies of radiation
short wavelengths of radiation
long-wavelength sound waves
the relation f-t tells us that high temp sources emit electromagnetic waves of
high frequency
low frequency
long wavelengths
high penetrating power
a high temp source radiates relatively
short wavelengths
long wavelengths
low frequencies
none of these
all surfaces that absorb radiant energy
emit it as well
reflect it as well
convert it to lower frequencies
conduct it away
the pupil of your eye is black because light that enters your eye
is absorbed
is reflected
is radiated away
turns pink to black
when a solid is changed to a liquid phase, the solid
releases energy
absorbs energy
neither of the above
when a liquid is changed to a gas, the liquid
releases energy
absorbs energy
neither
when a gas turns to a liquid, the gas
releases energy
absorbs energy
neither
according to the first law of thermodynamics,
there is no such thing as a perpetual motion machine
the energy of a system is constant
the total energy used in any process is conserved
in any process there is a decrease in potential energy
the Fahrenheit temp scale is defined by which of the following temps
water boils at 100 degrees and freezes at 32 degrees
water boils at 212 degrees and freezes at 32 degrees
water evaporates at 212 degrees and freezes at 0 degrees
liquid water turns to a gas at 100 degrees and to a solid at 0 degrees
a cold blooded reptile basks on a warm rock in the sun. its body is warmed by
radiation
conduction
convection
both a and b
an internal combustion engine uses what kind of energy to do work
radiation
heat
solar
Electrical
temp is a measure of the avg _____ energy of an objects particles
mechanical
kinetic
potential
light
which of the following is the name of a temp scale
celcius
Fahrenheit
kelvin
all of the above
convert 75 C to F
74 F
102 F
150 F
167 F
the temp at which all molecular motion stops is
0 C
0 F
0 K
all of the above
convert 500 F to C
260 C
296 C
842 C
958 C
when one feels a warm oven, the sensation of warmth is the result of
energy transfer
potential energy
contraction of molecules
molecular transfer
convert 300 K to the Celsius scale
0 C
27 C
73 C
573 C
convert 458 K to the equivalent F temp
185 F
237 F
365 F
731 F
the energy transferred between objects with different temps is
absolute zero
heat
potential
cold
which of the following temps is impossible to measure
-85 F
-50 C
-20 K
545 F
____ describes how much energy is required to raise an object's temp
conduction
radiation
specific heat
convection
calculate the energy transferred when raising the temp of 16 kg of water by 3 C (c=4,186 J/kg x K)
785 J
2.2 kJ
1.26 x 10 to the 5th J
2.0 x 10 to the 5th J
____ does not involve the movement of matter
conduction
radiation
heat
convection
calculate the specific heat for a 20g piece of metal if 30 J of energy is required to raise its temp by 12.5 K
0.12J/kg x K
7.5 J/kg x K
120 J/kg x K
48 kJ/kg x K
heat always moves from an object of ___ temp to an object of ___ temp
moderate, high
higher, lower
lower, higher
zero, high
a drill bit will get hot after extended use. this is bc of
potential energy
refrigeration
mechanical heating
solar heating
solar panels gather ___ energy from the sun
kinetic
radiated
potential
mechanical
when energy is transformed, the amount of usable energy
decreases
remains constant
increases
none of the above
a solar heating system that utilizes an electric fan to move warm air throughout a home is called a ____ system
active
aggressive
convective
passive
which item below contains insulation material
stainless steel fork
aluminum pie pan
brass nail
plastic foam cup
evaporation causes a ___ effect
basking
radiation
cooling
heating
heat engines use ___ to convert potential chemical energy and internal kinetic energy into mechanical
conduction
combustion
radiation
convection
an engine transforms chemical energy of a fuel into work done by
a carburetor
friction
spark plugs
piston
the total amount of energy (both usable and unusable) in any process
increases
decreases
remains constant
varies
what is 37.0 C on the F scale
98.6 F
87.0 F
92.0 F
102.0 F
as the kinetic energy of the molecules in a substance increases, the
temp of the substance increases
temp of the substance decreases
potential energy of the substance changes
temp remains the same
the transfer of energy as heat caused by the collision of molecules called
convection
conduction
contact
radiation
in an air conditioner, a substance that easily evaporate and condenses is used to transfer energy from a room to the air outside. when the substance evaporates,
it absorbs energy as heat from the surrounding air
it transfers energy as heat to the surrounding air
energy is transferred by conduction
energy is transferred by convection
the temp of a substance increases by 3 K when 1,635 J is added to a 2kg quantity of the substance. what is the specific heat of the substance
242J/kg x K
272 J/kg x K
300 J/kg x K
817 J/kg x K
the temp of 1.5 kg of ethanol is 37 C. what will the final temp be if 80,000 J of energy as heat is added to the ethanol
22 C
51 C
59 C
67 C
energy from the sun reaches earth by
conduction and radiation
radiation only
conduction and convection
conduction only
convection currents rise in air because
hot air rises and cold air remains stagnant
cool air descends and hot air rises
the molecules in hot air move faster
hot air has less friction
what is -175 C on the Kelvin scale
76 K
89 K
98 K
448 K
temp is
associated with the sensation of hot and cold
proportional to the avg kinetic of molecules
measured with thermometers
all of the above
the transfer of energy by the movement of fluids or gases with different temps is called
convection
conduction
contact
radiation
which method of energy transfer does not involve movement of matter
convection
conduction
radiation
none of the above
which of the following substances is the best conductor of transferring energy as heat
carbon dioxide gas
water
iron
rubber
10.0 kg of a substance underwent a 3.0 K change in temp when 11,500 J of energy as heat was added to the substance. What is the substance
gold
water
copper
aluminum
which of the following statements is true
energy as heat is transferred from a lower temp to a higher temp
energy as heat is transferred from a higher temp to a lower temp
the amount of heat in a closed system is a constant
energy as heat transferred into an object is determined by the amount of work done on the object
how much heat energy will cause the temp of 7.0 kg of iron to increase its temp by 15K? the specific heat of iron is 449 J/kg x K
6.8 x 10 the the forth J
4.7 x 10 to the forth J
7.0 x 10 to the forth J
3.0 x 10 the the forth J
an increase in temp of 1 C and 1 F are the same, but in different units
true
false
an iceberg contains more thermal energy than a cup of hot tea
true
falso
doubling temp means doubling thermal energy on the Celsius and Fahrenheit scales
true
false
adding the same amount of heat to a cup of water and a cup of olive oil will produce different increases of temp
true
false
large land masses surrounded by water usually have less temp extremes in their climates
true
false
a watermelon will stay cool for a longer time than sandwiches in the same cooler box due to the high specific heat of water in the melon
true
false
without exception, all substances expand when their temps are raised
true
false
when a metal ring is heated, its hole becomes larger
true
false
when 4 C water is either heated or cooled a bit, the water expands
true
false
both the tile floor and a rug in a room are normally the same temp
true
false
all substances continually absorb and emit electromagnetic energy
true
false
whenever a substance changes phase from solid to liquid, it is a net emitter of energy
true
false
a material that is a poor conductor of energy
radiation
convection
conduction
specific heat
insulator
characteristic physical property of a substance, denoted by the letter c
specific heat
conductor
insulator
conduction
the transfer of energy as heat through a material
conduction
radiation
conductor
specific heat
energy transferred through electromagnetic waves
convection
insulator
radiation
conduction
a material through which energy is easily conducted
conductor
conduction
insulator
specific heat
the movement of fluids due to density differences caused by temp variations
convection
conduction
insulator
radiation
