Conceptual Physical Science (6th Edition)

Chapter 8

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Thicker mud walls provide better insulation. ; Mud... more

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Fiberglass is a general choice to insulate ... more

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The hot air from the flame travels upwards and not... more

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All of them emit radiant energy. ; All objects ... more

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The temperature would be higher as compared to its... more

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The f still feels cold because the walls of the ... more

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Radiator painted silver would be more effective... more

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No. ; The rate of cooling depends on the present ... more

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It is not possible. ; No matter how large or small... more

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No. ; E is a cooling process only because the ... more

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No. ; The constant water level implies that the ... more

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No. ; Water boils at a temperature of , and a hand... more

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Rapidly boiling water keeps the spaghetti strands ... more

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Condensation warms the surrounding air. ; As the ... more

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Loose electrons help in the transfer of energy ... more

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Material C is a poor conductor of heat and does ... more

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Due to lack of free electrons to transfer energy ... more

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Heat transfer by convection is done by the direct ... more

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The temperature decreases. ; When the air expands... more

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The hot steam cools down by expanding and mixing ... more

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Due to the change in temperature of the land in ... more

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Directly proportional  ; Peak frequency increases ... more

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The radiation emitted from the earth is known as ... more

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Absorption of energy occurs simultaneously with ... more

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Pupils do not reflect any light, as a result they ... more

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Radiation occurs more when the poker is placed in ... more

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A red hot poker in a cold oven ; Since the rate of... more

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Yes ; Warming and cooling process arises from the ... more

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The day and night will experience extreme ... more

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A small change can lead to changes in larger ... more

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Matter can exist in four forms i.e. Solid ... more

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Wide variety of speeds ; All the molecules in ... more

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Evaporation is a process in which liquid turns to ... more

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Sublimation is the process of conversion between ... more

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Condensation is the process of turning gas into a ... more

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Steam burning is more damaging than the boiling ... more

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EvaporationBoilingIt is a natural process of the ... more

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When atmospheric pressure is greater than 0, the ... more

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Food cooks much faster with pressure cooking due ... more

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Increasing the solid's temperature makes its ... more

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Decreasing the temperature of a liquid makes it ... more

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The foreign particle will lower the freezing point... more

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Absorb energy to change to gas.Release energy to ... more

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Release energyAbsorb energy ; In gases, the ... more

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Dear Grandparents,In nature, all the phenomena are... more

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When the mouth is wide open, the air coming out of... more

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The ice which is under the black cloth will melt ... more

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Metal is a good conductor of heat so spread out ... more

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The bubble will form first at the bottom of the ... more

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The steam gets in contact with the cooler air to ... more

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Both of these rains are produced by the process ... more

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When atmospheric pressure increases, the boiling ... more

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 . ; The change in temperature going from to is... more

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; The change in temperature going from to is .... more

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Substitute the values  m= 50 g and  Lf=80 cal/g in... more

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; Amount of ice is and latent heat of fusion is ... more

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Substitute  m=50 g and  Lv=540 cal/g in the ... more

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; Amount of boiled water is and latent heat of ... more

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Calculate the needed energy to make three ... more

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Calculate the energy required to raise temperature... more

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First calculate the amount of required energy to ... more

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Let the mass of the ice be . So first calculate ... more

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First calculate the energy released when water ... more

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First calculate the energy released when iron goes... more

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5 kg ; The energy required to vaporize 2 kg of ... more

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Copper has very high thermal conductivity because ... more

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Blue star emits the highest frequency light as it ... more

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The pressure in the valley is more than the ... more

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The phase change of boiling water to steam ... more

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When a person is standing on an igloo, ice works ... more

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Touching a nail   ; As ice is a insulator so when ... more

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The material  fiberglass has trapped air inside ... more

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Gravestone conducts heat from the ground and hence... more

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Yes, wood in the form of coal has low conductivity... more

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So that heat can be conducted through the bottom... more

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Wood is a poor conductor of heat, so it does not ... more

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When an air parcel has lower density than its ... more

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When air gets compressed, in that case some ... more

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When air expands, in that case some air works on ... more

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Since the compressed air and water mixture expands... more

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It is a radiation energy which makes the body feel... more

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Those rocks are not actually hot , they emit the ... more

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Formula tells about the relation between peak ... more

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Everything which has non zero temperature (nothing... more

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Terrestrial radiation.Earth's radiation is not in ... more

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A good reflector surface would be a bad emitter... more

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Students' bodies emitted more energy than ... more

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Aluminium foil reflects the thermal radiation and ... more

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Newton's cooling formula accounts for temperature ... more

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White hot poker. ; As white hot poker has high ... more

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piece of pie ; Newton's law of cooling states ... more

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White color reflects a lot of light so applying ... more

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Earth's average atmospheric temperature will drop... more

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Because the plant's temperature is relatively low... more

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Planet Venus has the same greenhouse gas that ... more

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Since alcohol evaporates quickly, more heat ... more

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When the wet finger is held up in the air, ... more

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The dogs have only a few sweat glands between ... more

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By doing so, surface area will increase for tea ... more

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The porous bags, filled with water, hanging ... more

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Water in wet cloth evaporates by taking the ... more

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Disagree ; When the weather is humid then there is... more

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Both  ; When it was can heated , it got filled ... more

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Nitrogen and dry air is filled between the panes ... more

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At lower temperature boiling can be achieved by ... more

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Boiling temperature is attained when the vapor ... more

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No, because for cooking egg high temperature is ... more

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Lowering the boiling point will increase the time ... more

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No  ; If the water is boiling rapidly which means ... more

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Placing the lid over the water container on the ... more

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The temperature of water is more than in the ... more

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On melting, the state of a substance changes from ... more

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Temperature at which metal melts would be higher ... more

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The Half-melted portion  will contain double the ... more

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Antifreeze lowers the water's freezing point. ; ... more

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Increasing the  supply of  heat energy does not ... more

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One can withdraw the heat without changing ... more

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Air conditioners and refrigerators both take ... more

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Warm air contains a large amount of water vapor. ... more

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Heat of vaporization. ; For water Heat of fusion ... more

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Disagree  ; when the heat energy is provided or ... more

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Temperature of the thermometer will neither go up ... more

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Feather quilt trap air inside and air is a good ... more

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In reality heat is flowing from hand to the ice... more

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No ; In this hypothetical case , the energy of all... more

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Ether gets evaporated by absorbing energy from ... more

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Kinetic energy will remain the same as kinetic ... more

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U- 235 has higher average speed because it's ... more

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No. If good absorbers were bad emitters then their... more

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 The reason is that at high mountains tea boils at... more

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At the bottom of the sea, there is very high ... more

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The cream should be added right away. ; The hot ... more

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Turn it off altogether ; Since the loss of heat to... more

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Turn it off altogether ; Since the load on the ... more

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Because water in the jar can only get the energy ... more

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The wood ; As metal and metal road both have the ... more

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White clouds will reflect more so the amount of ... more

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Because when water freezes then it releases energy... more

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Because at normal atmospheric pressure water ... more

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Because black color absorbs more energy and then ... more

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Good conduction will damage the foot of the walker... more

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Convection needs a medium where radiation does not... more

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It increases as work is done on the system , so ... more

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Bad conductors can also be good at absorption. For... more

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Conduction needs a medium and earth is isolated in... more

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Sun has a higher temperature than earth so from... more

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Visible light can go through the glass but ... more

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Yes, the evaporated molecules take energy from the... more

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Water phase has less energy than vapor phase so ... more

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Only by decreasing temperature ,freezing and ... more

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