Answer the following question given this paragraph: A thermometer is a device used to measure temperature. It is placed in contact with an object and allowed to reach thermal equilibrium with the object (they will have the same temperature). The operation of a thermometer is based on some property, such as volume, that varies with temperature. The most common thermometers contain liquid mercury, or some other liquid, inside a sealed glass tube. The liquid expands and contracts faster than the glass tube. Therefore, when the temperature of the thermometer increases, the liquid volume expands faster than the glass volume, allowing the liquid to rise in the tube. The positions of the liquid in the tube can then be calibrated for accurate temperature readings. Other properties that change with temperature can also be used to make thermometers; liquid crystal colors and electrical conductivity change with temperature, and are also relatively common thermometers. Q: What device is used to measure temperature? Choices: - compass - anemometer - barometer - thermometer A:
thermometer
(Question)
Answer the following question given this paragraph: It might only take one sperm to fertilize an egg, but that sperm is not alone. Hundreds of millions of sperm can be released during sexual intercourse. Q: How many sperm does it take to fertilize an egg? Choices: - 3 - 2 - 4 - 1 A:
(Answer)
1
Ques: Answer the following question given this paragraph: The zygote undergoes many cell divisions before it implants in the lining of the uterus. Q: The zygote undergoes many cell divisions before it implants in the lining of what? Choices: - vagina - ovaries - pelvis - uterus A:
Ans: uterus
(Q).
Answer the following question given this paragraph: To obtain the tabulated results for this decomposition, the concentration of hydrogen peroxide was measured every 6 hours over the course of a day at a constant temperature of 40 C. Reaction rates were computed for each time interval by dividing the change in concentration by the corresponding time increment, as shown here for the first 6-hour period: [H 2 O 2] (0.500 mol/L 1.000 mol/L) = = 0.0833 mol L 1 h 1 t (6.00 h 0.00 h) Notice that the reaction rates vary with time, decreasing as the reaction proceeds. Results for the last 6-hour period yield a reaction rate of: [H 2 O 2] (0.0625 mol/L 0.125 mol/L) = = 0.0104 mol L 1 h 1 t (24.00 h 18.00 h) This behavior indicates the reaction continually slows with time. Using the concentrations at the beginning and end of a time period over which the reaction rate is changing results in the calculation of an average rate for the reaction over this time interval. At any specific time, the rate at which a reaction is proceeding is known as its instantaneous rate. The instantaneous rate of a reaction at "time zero," when the reaction commences, is its initial rate. Consider the analogy of a car slowing down as it approaches a stop sign. The vehicle's initial rateanalogous to the beginning of a chemical reactionwould be the speedometer reading at the moment the driver begins pressing the brakes (t0). A few moments later, the instantaneous rate at a specific momentcall it t1would be somewhat slower, as indicated by the speedometer reading at that point in time. As time passes, the instantaneous rate will continue to fall until it reaches zero, when the car (or reaction) stops. Unlike instantaneous speed, the car's average speed is not indicated by the speedometer; but it can be calculated as the ratio of the distance traveled to the time required to bring the vehicle to a complete stop (t). Like the decelerating car, the average rate of a chemical reaction will fall somewhere between its initial and final rates. The instantaneous rate of a... Q: At any specific time, the rate at which a reaction is proceeding is known as its what? Choices: - spontaneous rate - immediate rate - emitted rate - instantaneous rate A:
(A).
instantaneous rate
Ques:Answer the following question given this paragraph: Gyroscopes used in guidance systems to indicate directions in space must have an angular momentum that does not change in direction. Yet they are often subjected to large forces and accelerations. How can the direction of their angular momentum be constant when they are accelerated?. Q: What instruments used in guidance systems to indicate directions in space must have an angular momentum that does not change in direction? Choices: - actuators - elevators - magnets - gyroscopes A:

Ans:gyroscopes
Ques: Answer the following question given this paragraph: Q: Foresters commonly inoculate pine seedlings with a type of what to promote growth? Choices: - yeast - soil - proteins - fungi A:
Ans:
fungi