Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
43 Cards in this Set
- Front
- Back
|
On the celsius temperature A. Zero means there is no temperature B. 80° is twice as hot as 40° C. The numbers relate the freezing and boiling water D. There are more degrees than on the fahrenheit scale. |
The numbers relate to the booking and freezing of water. |
|
|
External energy refers to the A. Energy that changed the speed of an object B. Energy of all the molecules making up an object C. Total potential energy and kinetic energy of an object that you can measure directly. D. Energy from am extraterrestrial source. |
Total potential energy and kinetic energy of an object that you can measure directly. |
|
|
The transfer of heat that takes place by the movement of groups of molecules with higher kinetic energy is A. Conduction B. Convection C. Radiation D. Sublimation |
Convection |
|
|
The transfer of heat that takes place directly from molecule to molecule is A. Conduction B. Convection C. Radiation D. Sublimation |
Conduction |
|
|
The heat involved in the change of phase from solid ice to liquid water is called A. Latent heat of vaporization B. Latent heat of fusion C. Latent heat of condensation D. None of the above |
Latent heat of fusion |
|
|
If you want to move heat from a region of cooler temperature to a regions of warmer temperature, you must supply energy. This is described by the A. First law of thermodynamics B. Second law of thermodynamics C. Third law of thermodynamics |
Second law of thermo dynamics |
|
|
The temperature of gas is proportion to the A. Average velocity of a gas molecules B. Internal potential energy of the gas C. Number of gas molecules in a sample D. Average kinetic energy of the gas molecules |
Average kinetic energy of the gas molecules |
|
|
Using Kelvin temperature scale, the freezing point of water is correctly written as A. 0 k B. 0°k C. 273 k D. 273°k |
273 K |
|
|
Styrofoam is a good insulating material because A. It is a plastic material that conducts heat poorly B. It contains many tiny pockets of air C. Of the structure of the molecules that make it up. D. It is not very dense |
It contains many tiny pockets of air |
|
|
Latent heat is hidden because it A. Goes into or comes out of internal potential energy B. Is a fluid (caloric) that cannot be sensed C. Does not actually exist D. Is a form of internal kinetic energy |
Goes into or comes out of internal potential energy |
|
|
A heat engine is designed to A. Move heat from a cool source to a warmer location B. Move heat from a warm source to a warmer location C. Convert mechanical energy into heat D. Convert heat into mechanical energy |
Convert heat into mechanical energy |
|
|
Suppose ammonia is spilled in the back of a large room... Blah blah blah |
Warmer is faster |
|
|
Anytime temperature differences occur, you can expect A. Cold to move to where it is warmer, such as cold moving into a warm house during the winter B. Heat Movement from any higher temperature reason C. In energy movement unless it is hot enough, such as the red hot heating element on a stove |
Heat movement from any higher temperature reason |
|
|
The specific heat of copper is roughly three timed as great as the specific heat of gold. Which of the following is true for equal masses of copper and gold |
A piece of copper stored three times as much hear at the same temperature. |
|
|
Conduction best takes place in a A. Solid B. Fluid C. Gas D. Vacuum |
Solid |
|
|
Radiation is the only method of heat transfer that can take place in a A. Solid B. Liquid C. Gas D. Vacuum |
Vacuum |
|
|
When you add heat to a substance, its temperature A. Always increases B. Sometimes decreases C. Might stay the same D. Might do up or down depending on temp |
Might stay the same |
|
|
At temperatures above freezing, the evaporation rate can equal the condensation rate only at A. Very high air temperatures B. Mild temperatures C. Low temperatures D. Any temperature |
Any temperature |
|
|
Which of the following had the greatest value for liquid water? A. Latent heat of fusion B. Latent heat of vaporization C. Both are equivalent D. None of the above is correct |
Latent heat of vaporization |
|
|
The second law of thermo o dynamics tells us that the amount of disorder, called entropy, is always increasing. Does the growth of a plant or animal violate the second law? A. Yes, a plant or animal is more highly ordered B. No, the total entropy of the universe increases C. The answer is unknown |
No, the total entropy of the universe increases |
|
|
A back and fourth motion that retests itself is a A. Spring B. Vibration C. Wave D. Pulse |
Vibration |
|
|
Frequency is measured in units of A. Time B. cycles C. Hertz D. Avis |
Hertz |
|
|
A wave with motion perpendicular to the direction that the wave is moving is classified as a A. Longitudinal wave B. Transverse wave C. Water wave D. Compression wave |
Transverse wave |
|
|
Sound waves with frequencies greater than 20,000 Hz are A. Infrasonic waves B. Supersonic waves C. Ultrasonic waves D. Impossible |
Ultrasonic waves |
|
|
Sound travels faster in A. Warmer air B. Cooler air C. Temperature does not influence the speed of sound D. A vacuum |
Warmer air |
|
|
A reflected sound that reaches the ear within 0.1 s after the original sound results in A. An echo B. Reverberation C. Refraction D. Confusion |
Reverberation |
|
|
Two in phase sound waves with the same amplitude and frequency arrive at the same place at the same time, resulting in A. Higher frequency B. Refraction C. A new sound wave with greater amplitude D. Reflection |
A new sound wave with greater amplitude |
|
|
To sound wAves of equal amplitude with slightly different frequencies will result in A. An echo B. The doppler effect C. Alternation of loudness of sound known as beats D. Two separate sounds |
Alternation of loudness of sound known as beats |
|
|
The energy of a sound wave is proportional to the rate of energy transferred to an area perpendicular to the eaves, which is called the sound A. Intensity B. Loudness C. Amplitude D. Decibel |
Intensity |
|
|
A resonant condition occurs when A. An external force matches a natural frequency B. A beat is heard C. Two out of phase waves have the aye frequency D. A pure to is created |
An external force matches a natural frequency |
|
|
The fundamental frequency on a vibrating string is what part of a wave length A. 1/4 B. 1/2 C. 1 D. 2 |
1/2 |
|
|
A moving source of sound or a moving observer experiences the apparent shift in frequency called A. Fundamental frequency B. Doppler effect C. Wave front effect D. Shock waves |
Doppler effect |
|
|
A rocket traveling at 3 times the speed of sound is traveling at A. Sonic speed B. Mach speed C. Mach 3 D. Subsonic speed |
Mach 3 |
|
|
A transverse mechanical wave causes particles of a material to move. A. Back and fourth in the same direction B. Perpendicular to the direction the wave is moving C. In a circular motion in the direction that wave is moving D. In a circular motion opposite the direction the wave is moving. |
Perpendicular to the direction the wave is moving. |
|
|
Longitudinal mechanical waves will move only through A. Solids B. Liquids C. Gases D. All of the above are correct |
All of the above are correct. |
|
|
The characteristics of a wave that is responsible for what you interpret as pitch is the wave A. Amplitude B. Shape C. Frequency D. Height |
Frequency |
|
|
The difference between an echo and a reverberation is A. An echo is reflected sound; reverberation is not. B. The time interval between the original sound and the reflected sound C. The amplitude of an echo is much greAter D. Reverberation comes from acoustical speakers ; echoes come from cliffs and walls |
The time interval between the original sound and the reflected sound. |
|
|
The fundamental frequency of a standing wave on a string has A. One node and one antinode B. One node and two antinode C. Two nodes and one antinode D. Two nodes and two antinodes |
Two nodes and one antinode |
|
|
What comment is true about the statement that "the human ear hears sounds originating from vibrating objects both a frequency between 20 and 20,000 Hz. A. This true only at room temperature B. About 95 percent hear in this range, while some hear outside the average limits. C. This varies, either females hearing frequencies above 20,000 Hz D. Very few people hear this whole range, which decreases with age |
Very few people hear this whole range, which decreases either age. |
|
|
During a track AMD field meet, the time difference between seeing the smoke from a starters gun and hearing a bang would be less A. On a warmer day B. On a cooler day C. If a more powerful shell were used D. If a less powerful shrill were used |
On a warmer day |
|
|
An airplane pilot hears a slow near from the two engineers of his plane. He increases the speed of the right engine and now hears a slower best. What should the pilot now do to eliminate the beat? A. Increase speed of the left engine B. Decrease the speed of the right engine C. Increase the speed of both engines D. Increase the speed of the right engine |
Increase the speed of the right engine |
|
|
The sound quality is different for the same-pitch note produced by two different musical instruments, but you are able to recognize the basic note because of the same A. Harmonics B. Fundamental frequency C. Node positions D. Standing waves |
Fundamental frequency |
|
|
What happens if you are moving at a high rate of speed toward some people standing next to a stationary source of sound? You will hear A. A higher frequency than the people you are approaching will hear B. The same frequency as the people you are approaching will hear C. The same frequency as when you are the source are not moving. D. A higher frequency, as will all observers in all directions |
A. |
