The concept of energy efficiency is used to quantify (a) the first law of thermodynamics. (b) the second law of thermodynamics. (c) conservation of matter. (d) energy quality. (e) the third law of thermodynamics.

A car traveling down the highway represents (a) kinetic energy. (b) electromagnetic radiation. (c) potential energy. (d) chemical energy. (e) entropy.

Choose the best answer. The greatest value of the scientific method is best stated as: (a) The scientific method permits researchers a rapid method of disseminating findings. (b) The scientific method removes bias from observation of natural phenomenon. (c) The scientific method allows findings to be reproduced and tested. (d) The scientific method promotes sustainable development.

What is thermodynamics?

If a solar photovoltaic panel produces 1,000 watts of electrical energy and is active for 12 hours each day, how many kWh of electricity will be produced in a week? (a) 63 kWh, (b) 12 kWh, (c) 84 kWh, (d) 70 kWh, (e) 7 kWh.

Which of the following is NOT a macromolecule? (a) Carbohydrates, (b) Nucleic acids, (c) Organelles, (d) Proteins, (e) Lipids.

Which of the following is NOT a property of water that allows it to support life?

(a) Surface tension

(b) Capillary action

(c) Solvent ability

(d) High boiling point

(e) High viscosity.

Which of the following has the highest pH? (a) Pure water, (b) Bleach, (c) Cola beverage, (d) Seawater, (e) Acid rain.

A wooden log that weighs 1.00 kg is placed in a fireplace. Once lit, it is allowed to burn until there are only traces of ash, weighing 0.04 kg, left. Which of the following best describes the flow of energy? (a) The potential energy of the wooden log was converted into the kinetic energy of heat and light. (b) The kinetic energy of the wooden log was converted into 0.04 kg of ash. (c) The potential energy of the wooden log was converted into 1.00 J of heat. (d) Since the ash weighs less than the wooden log, matter was converted directly into energy. (e) The burning of the 1.00 kg wooden log produced 0.96 kg of gases and 0.04 kg of ash.

Choose the best answer. A car traveling down the highway best represents (a) kinetic energy. (b) electromagnetic radiation. (c) potential energy. (d) chemical energy.

Choose the best answer. The following table shows the efficiencies of systems providing lighting to three different houses.

$$\begin{array}{|l|c|c|c|} \hline \text{ } & \text{House A (percent efficiency)} & \text{House B (percent efficiency)} & \text{House C (percent efficiency)}\\ \hline \text{Power plant} & \text{55} & \text{33} & \text{33}\\ \hline \text{Electrical transmission lines} & \text{90} & \text{90} & \text{90}\\ \hline \text{Lighting} & \text{5} & \text{20} & \text{25}\\ \hline \end{array}$$

Overall, which represents the most efficient system? (a) House A (b) House B (c) House C (d) Houses A and B

In order to take a nice warm bath, you mix 50 liters of hot water at $55^{\circ} \mathrm{C}$ with 25 liters of cold water at $10^{\circ} \mathrm{C}.$ How much new entropy have you created by mixing the water?

How does the law of the conservation of energy relate to the first law of thermodynamics?

State the first law of thermodynamics.