user: Answer the following question given this paragraph:   A circuit breaker is a switch that automatically opens a circuit if too much current flows through it. This could happen if too many electric devices are plugged into the circuit or if there is an electric short. Once the problem is resolved, the circuit breaker can be switched back on to close the circuit. Circuit breakers are generally found in a breaker box that controls all the circuits in a building.   Q: What type of switch automatically opens a circuit if too much current flows through it?   A:

OPTIONS:
- toggle switch
- regulator switch
- kill switch
- circuit breaker

Answer: circuit breaker


Answer the following question given this paragraph:   Some samples of matter appear to have properties of solids, liquids, and/or gases at the same time. This can occur when the sample is composed of many small pieces. For example, we can pour sand as if it were a liquid because it is composed of many small grains of solid sand. Matter can also have properties of more than one state when it is a mixture, such as with clouds. Clouds appear to behave somewhat like gases, but they are actually mixtures of air (gas) and tiny particles of water (liquid or solid). The mass of an object is a measure of the amount of matter in it. One way to measure an object’s mass is to measure the force it takes to accelerate the object. It takes much more force to accelerate a car than a bicycle because the car has much more mass. A more common way to determine the mass of an object is to use a balance to compare its mass with a standard mass. Although weight is related to mass, it is not the same thing. Weight refers to the force that gravity exerts on an object. This force is directly proportional to the mass of the object. The weight of an object changes as the force of gravity changes, but its mass does not. An astronaut’s mass does not change just because she goes to the moon. But her weight on the moon is only one-sixth her earth-bound weight because the moon’s gravity is only one-sixth that of the earth’s. She may feel “weightless” during her trip when she experiences negligible external forces (gravitational or any other), although she is, of course, never “massless. ” The law of conservation of matter summarizes many scientific observations about matter: It states that there is no detectable change in the total quantity of matter present when matter converts from one type to another (a chemical change) or changes among solid, liquid, or gaseous states (a physical change). Brewing beer and the operation of batteries provide examples of the conservation of matter (Figure 1.8). During the brewing of beer, the ingredients (water, yeast, grains, malt, hops, and sugar) are...   Q: Some samples of matter appear to have properties of solids, liquids, and/or gases at the same time. this can occur when the sample is composed of many what?   A:

OPTIONS:
- turn pieces
- large pieces
- few pieces
- small pieces

Answer: small pieces


Answer the following question given this paragraph:   The active transport of ions across the membrane causes an electrical gradient to build up across the plasma membrane. The number of positively charged ions outside the cell is greater than the number of positively charged ions in the cytosol. This results in a relatively negative charge on the inside of the membrane, and a positive charge on the outside. This difference in charges causes a voltage across the membrane. Voltage is electrical potential energy that is caused by a separation of opposite charges, in this case across the membrane. The voltage across a membrane is called membrane potential . Membrane potential is very important for the conduction of electrical impulses along nerve cells.   Q: The active transport of ions across the membrane causes an electrical gradient to build up across the what?   A:

OPTIONS:
- colloidal membrane
- components membrane
- cells membrane
- plasma membrane

Answer: plasma membrane


Answer the following question given this paragraph:   Trophic level 3 = secondary consumers that eat primary consumers.   Q: What trophic level are secondary consumers (which eat primary consumers) considered to be?   A:

OPTIONS:
- trophic level 5
- trophic level 4
- trophic level 2
- trophic level 3

Answer:

assistant: trophic level 3