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The moderate temperatures of islands throughout the world has much to do with the water's...
high specific heat
Compared to a giant iceberg, a hot cup of coffee has..
higher temperatures, but less internal energy
Consider a closed, sealed can of air places on a hot stove. The contained air undergoes an increase in...
two; pressure and temperature
During a very cold winter, water pipes sometimes burst. The reason for this is..
water expands when freezing
The face that desert sand is very hot in the day and very cold at night is evidence that sand has..
low specific heat
Your feet feel warmer on a rug than on your tile floor because your rug..
is a better insulator than your tile
At the same temperature, which will move with the grater speed in the air? light or heavier molecules?
An object will normally be a net radiator of energy when its temperature is...
higher than it's surroundings
It is common knowledge that a can of soda will cool faster in the coldest part of a refrigerator. Knowledge of Newton's law of cooling..
supports its common knowledge
Wrapping a hot potatoe in aluminum foil significantly reduces the rate at which it loses energy by...
If air were a better conductor of hear that it is, at night time the earth would be..
Both black and white road surfaces absorb sunlight. At the end of a sunny day the warmer road surface will be the white or black?
the white surface
one of the main reasons one can walk barefoot on red-hot coals of wood without burning the feet has to do with..
the low thermal conductivity of the coals
To wholly convert a given amount of hear energy into mechanical energy is..
impossible regardless of the technique used
A temperature inversion occurs when the upper layers of air are
warmer than that in the lower regions of air.
Blow on tour hand with you moth open and you feel the warmth of your breath. Pucker your lips so you breath expands as you blow and your breath is..
When mechanical work is done on a system, there can be an increase in..
both temperature and internal energy
When a volume of air is compressed and no heat enters or leaves, the air temperature will..
Two identical blocks of iron, one at 10°C and the other at 20°C are put in contact. Suppose the cooler block cools to 5°C and the warmer block warms to 25°C. This would violate the..
2nd law of thermodynamics
Suppose you put a closed, sealed can of air on a hot stove burner. The contained air will undergo an increase in...
internal energy, temperature and pressure.
What happens to molecules when the temperature reaches absolute zero
all of their motions tops completely
Which has greater density, a cup with 100mL of pure water or a jug of 1L of pure water?
both are same
Which has a greater mass, a cup with 100mL of pure water or a jug of 1L of pure water?
1L of pure water
which has a greater volume, a cup with 100 mL of pure water of a jug of 1L of pure water?
a jug of 1L of pure water
If the mass of an object doubles while the volume stays the same, what will happen tot he density of the object?
If the mass of the object stays the same while the volume decreases by half, what will happen tot he density of an object?
This is a physical property that causes it to deform when a deforming force is applied and return back to the original state
The amount of stretch or compression is directly proportional to the applied force. What is this law?
a ______ is a curve that a hanging chain or a cable assumes when supported at its end and acted only by its own weight.
diamond has a density value of 3.54 g/ml and lead has a density of 11.34 h/ml. Which is more dense?
a piece of gold has a mass of 1080.0 grams and a volume of 56mL. Find the mass of the gold. D=M/V
true or false
atoms are the smallest subdivision of matter that still remains its chemical properties
In an electrically neutral atom, the number of protons in the nucleus is balanced by an equal number of
All of the following are isotopes of Hydrogen except,
protium, deuterium, tritium, or duodenum
compared to the atoms that make up the body of an elderly person, the atoms that make up the body of a newborn baby are...
the same age
isotopes have: the same number of protons, different number of neutrons, a different mass number, more than one is correct.
more than one choice is correct
a dam is thicker at the bottom than at the top partly because..
water pressure is greater with increasing death
when holes are drilled through the wall of a water tower, water will spurt out the greatest horizontal distance from the hole closest to...
the bottom of the tower
a lobster crawls onto a bathroom scale submerged at the bottom of the ocean. Compared to its weight above the surface, the lobster will have an apparent weight under water that is...
ice cubes submerged at the bottom of a liquid indicate that the liquid...
is less dense than the ice
a boat loaded with scrap iron floats in a swimming pool. When the iron is thrown overboard, the pool level will
there is a legend of a Dutch boy who bravely held back the Atlantic Ocean by plugging a leak near the top of a dike with his finger until help arrived. Which of the following is most likely? impossible, force on finger was huge but possible, force on his finger would have been less than 1 N, or both pressure and force would have been great.
force on his finger would have been less than 1 N
To multiple the input force of hydraulic lift, the input end should be the one having the _____ ______ piston.
smaller diameter poston
which block applies less pressure on the table? a vertically laid block, or horizontally laid block?
vertically laid block
we cannot hear sounds in outer space because
a. sound waves cannot travel in space.
b. only transverse waves travel in space
c. longitudinal waves require a medium to travel in
when a hammer and a mug fall and hit the ground they sound different because. . .
they have different natural frequencies.
steam burns are more dangerous than burns caused by boiling water because steam
a. gives additional energy when it condenses
b.has more energy per kilogram then boiling water
c.both are correct
d.both are incorrect
both are correct
we feel uncomfortable warm on a muggy day becasue water molecules are___
evaporating and condensing on our bodies at the same rate
when bringing water to a boil in the mountians, the time needed to reach the boiling point__.
less than at sea level
firefighters find that the temperature of burning material is best lowered when water is
sprayed at a fine mist
consider a steaming aluminum soda-pop that contains a small ammount of boiling water. When it is quickly inverted in to a bath of cooler water the can is dramatically crushed by atmospheric pressure. This occurs becasue the pressure inside the can is rapidly reduced by..
condensation of steam energy
when a block of ice at zero degrees Celsius melts, the ice..
absorbs energy but does not change its temperature
which of these air temperatures can hold the most water? warm air, cool air, freezing air, room temperature air
the four common states of matter include: gel, gas, plasma, one is correct, 2 are correct
2 are correct
the frequency and the period of a wave are related to each other in that they are:
they are reciprocals of each other
a super-fast fish is able to swim faster than the speed of sound in water.:
a. this fish would create a sonic boom
b. this fish would create a shock wave
c.this would not create a sonic boom
d.two of the above are correct
d. two of the above are correct
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