Chapter 5 Thermal Energy

Defin the term heat and state what units are used to measure heat?

Heat is the form of energy that is transferred between systems or objects with different temperatures. Joules

Which of the following types of thermal energy transfer is primarily responsible for heating the water in the figure above?

conduction and conviction

This chart would most likely be used during an experiment designed to answer which of these question?

how can the specific heat of different metals be calculated

Ms. Markas takes in insulated beverage container filled with hot coffee to work each day. The container keeps the coffee hot by

slowing heat transfer

which process is taking place in all three pictures?

conduction

The temperature of a 24.5-g block of aluminum decreases from 30.0 C to 21.5 C. If aluminum has a specific heat of 897 J/kg C), how large is the change in thermal energy of the block of aluminum?

187J

Which of these statements is true?

Heating with electricity produced by a nuclear plant is the least energy-efficient method

Which statement about the figure is correct

Pot B has more thermal energy than Pot A

Kichu has noticed that he feels hotter on humid days than on dry days even when the temperatures are the same. Explain why this happens.

The humanoid around you doesn't evaporate while dry days the temperature is just dry it does evaporate

A 2 kg block of which material would require about 450 joules of thermal energy to increase its temperature by 1 degrees Celsius

Tin

Adam placed a heated aluminum cube in a beaker of water and then measured the change in the temperature of the water. The change in temperature he recorded was most likely measured in

calories

which of the following is not a method by which heat energy is transferred from a warmer object to a cooler one?

insulation

which is temperature most directly related to?

kinetic energy

The specific heat of a substance is the amount of energy required to raise the temperature of 1 kilogram of that substance 1 kelvin. A reasonable hypothesis based on the data in the graph is that?

metals require less energy than nonmetals to raise their temperature 1K

Give an example of how electromagnetic waves transfer energy by radiation. Give an example of how energy is transferred by conduction

microwaves and the stove heating a pot

our supply of fossil fuels such as coal oil and natural gas, is dwindling. Discuss the pros and cons of using nuclear energy. Suggest some alternative methods of energy production?

pro Abundance of Fossil Fuel Sources con Pollution

The graph shows the yearly cost of heating a home in the northeastern part of the United States. A reasonable hypothesis based on these data is that if the insulation in the walls is thicker, then

the yearly cost of heating a home goes down

Convection is the transfer of energy by the motion of the heated particles in a fluid. According to this information, which statement best describes an example of convection?

warm air rising in the atmosphere

According to the chart, between 1880 and 1980, which energy source went from supplying the largest percentage of energy to the smallest percentage?

wood

which material would require the most heat to raise a 5-kg sample of the material from 10 degrees celsius to 50 degrees celsius

zinc