PHYS-1405 ch.6-9

a good heat conductor is

a poor insulator

a block of wood and a block of copper will feel meither hot nore cold to the touch when they each have

your temperature

a photovoltaic cell receives energy input by

radiation

the surface of earth loses energy to outer space due mostly to

radiation

if a red hot thumbtack is immersed in warm water, the direction of heat flow will be from the

red hot thumbtack to the warm water

you heat a half-cup of tea and its temperature rises by 4C. How much will the temerature rise if you add the same amount of heat to a full cup of tea

2 degrees C

which of these would represent a greater change in temperature?

A Celsius degree A Kelvin ** both are the same size

heat energy is measured in units of

Calories and joules **both of these

the quantity of heat that a substance can transfer relates to its

Change in its temperature mass specific heat capacity *** all of the above

the process of boiling

Cools the water of being boiled depends on atmospheric pressure is a charge of phase below the water surface **ALL OF THE ABOVE

when Philadelphia's temperature is 40F and Miami's temperature is 80F

Miami is warmer than Philadelphia

Which body glows with electromagnetic waves?

Sun and Earth

which has the higher specific heat capacity, water or land?

Water

if you measure the width of an outdoor barn with a steel tape on a very cold day, your measured witdth will be

a bit longer

if you measure the distance between two telephone poles with a steel tape on a very hot day, your measured distance will be

a bit short

pour a liter of water at 40C into a liter of water at 20C and the final temperature of the two becomes

at or about 30C

a red-hot piece of coal will cool quicker in a

cold room

a soda-pop can containing only steam is placed top downward in a pan of water. Whap! The can id dramatically crushed by atmopheric pressure. The reduced pressure inside the can is due to

condensation of steam inside

soaring birds and glider pilots can remain aloft for hours without expanding power, due to

convection

if a volume of air is warmed, it expands and tends to

cool

aluminum has a specific heat capacity more than twice that of copper. Place equal masses of aluminum and copper wire in a flame and the one to undergo the fastest increase in temperature will be

copper

one of water's interesting thermal properties is that when it takes a relatively

long time in changing tmperature

open spaces in ice crystals contribute to

decreased density

as a piece of metal with a hole in it cools, the diameter of the hole

decreases

systems alone tend to move toward

disorder

the first law of thermodynamics is a restatement of the conservtion of

energy

when you touch a hot potato with your finger, energy flows

from the potato to your finger

when you touch a cold piece of ice with your finger, energy flows

from your finger to the ice

a bridge is more likely to be ice covered than the roadway on a cold day because

heat upwelling from the ground below is absent on a bridge

a substance that heats up relatively slowly has a

high specific heat capacity

an apple pie will be a net emitter of energy when its temperature is

higher than its surroundings

as a system becomes more disordered, entropy

increase

If a pizza absorbs more energy than it emits, its temperature

increases

the same quantity of heat is added to different amounts of water in two equal-size containers. The temperature of the smaller amount of water

increases more

your locker gets messier each week. in this case, the entropy of your locker is

increasing

a temperature difference of 10 celsius degrees is also equal to a temperature difference of 10 on the

kelvin scale

to say that body A has a higher temperature than body B is to say that body A has more

kinetic energy per particle -is defined as temperature

place a 1-kilogram block of iron at a 40C into 1 kilogram of water at 20C and the final temperature of the two becomes

less than 30C

the fact that desert sand is very hot in the day and very cold at night is evidence that the specific heat capacity of sand is relatively

low

the reason you can walk barefoot on red-hot coals of wood without burning your feet mainly involves

low conductivity of the coals

a substance that heats up relatively quickly has a

low specific heat capacity

a blueberry pie will be a net absorber of energy when its temperature is

lower than its surroundings

if you hold one end of a metal bar against a piece of ice, the end in your hand will soon become cold. Does could flow from the ice to your hand?

no- heat flows from your hand to the ice

The planet Earth loses heat primarily by

radiation

when stringing telephone lines between poles in the summer, it is advisable to allow the lines to

sag -telephone lines are longer in the warm and short in the cold

Two identical blocks of iron are placed in contact, one at 10°C and the other at 20°C. If the cooler block cools to 5°C and the warmer block warms to 25°C, this would violate the

second law of thermodynamics

the higher the temperature of an object, the

shorter the wavelengths it radiates

it is commonly though that a can of beverage will cool faster in the coldest part of a refrigerator. Knowledge of Newton's law of cooling

supports this knowledge

when you touch a nail stuck in ice, energy flows from

your hand to the ice