Exam 3 Lykens
If the frequency of a certain wave is 10 Hz, its period is
0.1s
Which would burn your skin the most?
100g of steam at 100 degrees Celsius
The heat of vaporization of ethyl alcohol Lv is about 200 cal/g. That means that 1 gram of this refrigerant upon vaporization would release.
200 calories
Glass in a florist's greenhouse acts as a one-way valve in that it
Allowing high-frequency waves to enter and blocking low-frequency waves from exiting
The specific heat capacity of aluminum is more than twice that of copper. Place equal masses of aluminum and copper wire in a flame and the wire to heat up quickest will be
Copper
A Doppler effect occurs when a source of sound moves
Either away from you of towards you
When thermal energy is added to boiling water, the water temperature
Remains the same
Some singers are able to shatter a crystal chandelier with their voice, which illustrates
Resonance
water boils in the mountains at
a lower temperature than at sea level
Sound waves cannot travel in
a vacuum
The loudness of a musical sound is most related to the sound's
amplitude
The reflection of sound is
an echo
Thermal energy is measured in
any or all: Calories, joules, and calories
The vibration of a transverse wave move in a direction
at right angles to the direction of wave travel
A soda can with a small amount of water is on a hot stove. Soon steam comes from its opening. When the can is quickly inverted into a pan of water, the can is crushed by
atmospheric pressure
What moves from place to place in wave motion is
energy
The operation of a bimetallic strip relies on differences in
expansion of metals
The process of convection occurs in
fluids
If the same quantity of heat is added to both a 1-liter and a 2-liter container of water, the temperature change of water in the 1-liter container will be
greater
Heat is thermal energy that flows from
hot to cold
As your room gets messier day by day, entropy is
increasing
Your bare feet feel warmer on a rug than on a tile floor because the rug
is a better insulator than tile
When an iron ring is heated, the hole becomes
larger
Water at 4 degrees Celsius will sink to the bottom of a pond because
like a rock, it is denser than surrounding water
Compression and rarefactions are characteristics of
longitudinal waves
A substance that heats up relatively quickly has a
low specific heat capacity
The fact that desert sand becomes very hot in the day and very cold at night is evident that sand has a
low specific heat capacity
When salt is introduced to water, the temperature at which freezing occurs is
lowered
The explanation for all types of refraction involves a change in
speed
Sound travels faster in
steel
Evaporation is a cooling process because
the more energetic molecules are able to escape the liquid
Convection currents in the air near a seashore are produced by
unequal heating of land and water
A red-hot piece of iron will cool slower in a
warm room
During a very cold winter, water pipes sometimes burst. The reason for this is
water expands when freezing
