input with options: Answer the following question given this paragraph: Figure 20.19 Power is distributed over large distances at high voltage to reduce power loss in the transmission lines. The voltages generated at the power plant are stepped up by passive devices called transformers (see Transformers) to 330,000 volts (or more in some places worldwide). At the point of use, the transformers reduce the voltage transmitted for safe residential and commercial use. (Credit: GeorgHH, Wikimedia Commons). Q: The voltages generated at a power plant are stepped up by what passive devices, which then reduce voltage to a safe level at the point of use? A:
OPTIONS:
- transistors
- batteries
- capacitors
- transformers
output: transformers

Q: Answer the following question given this paragraph: Mammals conserve heat with their hair or fur. It works like the layer of insulation in the walls of a house. It traps warm air next to the skin so it can't escape into the environment. Like the squirrel in Figure below , most mammals can make their hair or fur stand up from the skin. This makes it a better insulator. Mammals also have a layer of insulating fat beneath their skin. Other vertebrates lack this layer of fat. Q: What do mammals conserve heat with? A:

OPTIONS:
- fur or muscle
- skin or bones
- tendons or hair
- hair or fur

A: hair or fur

input: OPTIONS:
- elitism
- tinkering
- canibalism
- gradualism Now, answer this question: Answer the following question given this paragraph: When geologic and climatic conditions are stable, evolution may occur gradually. This is how Darwin thought evolution occurred. This model of the timing of evolution is called gradualism . Q: What term is used for darwin's idea that in stable geologic and climatic conditions evolution occurred gradually? A:
A:
output: gradualism

Answer the following question given this paragraph: Mechanical energy commonly changes between kinetic and potential energy. Kinetic energy is the energy of moving objects. Potential energy is energy that is stored in objects, typically because of their position or shape. Kinetic energy can be used to change the position or shape of an object, giving it potential energy. Potential energy gives the object the potential to move. If it does, the potential energy changes back to kinetic energy. Q: What type of energy can be used to change the position or shape of an object, thus giving it potential energy? A:

OPTIONS:
- static energy
- binary energy
- harmonic energy
- kinetic energy

Answer: kinetic energy

Problem: OPTIONS:
- weight Change
- radiation change
- liquid change
- chemical change
Q: Answer the following question given this paragraph: A chemical property describes the ability of a substance to undergo a specific chemical change. A chemical property of iron is that it is capable of combining with oxygen to form iron oxide, the chemical name of rust. The more general term for rusting and other similar processes is corrosion. Other terms that are commonly used in descriptions of chemical changes are burn, rot, explode, decompose, and ferment. Chemical properties are very useful in identifying substances. However, unlike physical properties, chemical properties can only be observed as the substance is in the process of being changed into a different substance. Q: A chemical property describes the ability of a substance to undergo a specific what? A:
Answer: chemical change

Answer the following question given this paragraph: Some metals, such as gold and platinum, do not corrode easily because they are very resistant to oxidation by common substances. Some other metals begin to be oxidized, but are further protected from additional corrosion by a coating formed on the surface. Aluminum reacts with oxygen to form aluminum oxide, which remains tightly packed on the surface. The aluminum oxide prevents the interior of the aluminum from corroding. Not all corrosion is a result of reaction with oxygen. Copper corrodes by reaction with carbon dioxide to form copper(II) carbonate. This distinctive green compound is also called patina and prevents the copper underneath from further corrosion (see Statue of Liberty in the Figure below ). Q: Some metals, such as gold and platinum, do not corrode easily because they are very resistant to what? A:

OPTIONS:
- evaporation
- precipitation
- heat
- oxidation

Answer:
oxidation