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