Answer the following question given this paragraph: Irrigation is the single biggest use of water. Overhead irrigation wastes a lot of water. Drip irrigation ( Figure below ) wastes a lot less. Water pipes run over the surface of the ground. Tiny holes in the pipes are placed close to each plant. Water slowly drips out of the holes and soaks into the soil around the plants. Very little of the water evaporates or runs off the ground. Q: What term is used to describe potential energy due to an object's shape? Choices: - stimulated potential energy - flexible energy - kinetic energy - elastic potential energy A:
elastic potential energy
Answer the following question given this paragraph: One thing is true of both regular and diffuse reflection. The angle at which the reflected rays leave the surface is equal to the angle at which the incident rays strike the surface. This is known as the law of reflection . The law is illustrated in the Figure below and also in this animation: http://www. physicsclassroom. com/mmedia/optics/lr. cfm. Q: Which law describes the angle at which the reflected rays leave the surface is equal to the angle at which the incident rays strike the surface? Choices: - gravity - velocity - diffusion - reflection A:
reflection
Q: Answer the following question given this paragraph: The heart is a muscular organ in the chest that consists mainly of cardiac muscle. It pumps blood through blood vessels by repeated, rhythmic contractions. Blood flows through four chambers of the heart when it beats. Heartbeat is controlled by electrical signals from special cells within the heart called the pacemaker. Q: What type of muscle makes up most of the heart? Choices: - chest muscles - heart muscle - respiratory muscle - cardiac muscle A:
A: cardiac muscle
Question: Answer the following question given this paragraph: specialized tissue inside plant leaves where photosynthesis takes place. Q: What important process takes place in specialized tissue inside plant leaves? Choices: - pollination - mitosis - reproduction - photosynthesis A:
Answer: photosynthesis
*Question*
Answer the following question given this paragraph: Summary Electrochemistry is the study of the relationship between electricity and chemical reactions. The oxidationreduction reaction that occurs during an electrochemical process consists of two halfreactions, one representing the oxidation process and one the reduction process. The sum of the halfreactions gives the overall chemical reaction. The overall redox reaction is balanced when the number of electrons lost by the reductant equals the number of electrons gained by the oxidant. An electric current is produced from the flow of electrons from the reductant to the oxidant. An electrochemical cell can either generate electricity from a spontaneous redox reaction or consume electricity to drive a nonspontaneous reaction. In a galvanic (voltaic) cell, the energy from a spontaneous reaction generates electricity, whereas in an electrolytic cell, electrical energy is consumed to drive a nonspontaneous redox reaction. Both types of cells use two electrodes that provide an electrical connection between systems that are separated in space. The oxidative half-reaction occurs at the anode, and the reductive half-reaction occurs at the cathode. A salt bridge connects the separated solutions, allowing ions to migrate to either solution to ensure the system's electrical neutrality. A voltmeter is a device that measures the flow of electric current between two half-reactions. The potential of a cell, measured in volts, is the energy needed to move a charged particle in an electric field. An electrochemical cell can be described using line notation called a cell diagram, in which vertical lines indicate phase boundaries and the location of the salt bridge. Resistance to the flow of charge at a boundary is called the junction potential. Q: What is the study of the relationship between electricity and chemical reactions called? Choices: - inorganic chemistry - analytical chemistry - physical chemistry - electrochemistry A:
**Answer**
electrochemistry
(Q).
Answer the following question given this paragraph: Q: Copper oxide is a result of what two substances mixing? Choices: - copper and gas - metal and oxygen - crystal and oxygen - copper and oxygen A:
(A).
copper and oxygen