Answer the following question given this paragraph: Venus has more volcanoes than any other planet. There are between 100,000 and one million volcanoes on Venus! Most of the volcanoes are now inactive. There are also a large number of craters. This means that Venus doesn't have tectonic plates. Plate tectonics on Earth erases features over time. Figure below is an image made using radar data. The volcano is Maat Mons. Lava beds are in the foreground. Scientists think the color of sunlight on Venus is reddish-brown. Q: What planet has the most volcanoes? Choices: - Mars - Earth - uranus - venus A:
venus
(Question)
Answer the following question given this paragraph: An error is a boundary on the precision and accuracy of the result of a measurement. Some errors are caused by unpredictable changes in the measuring devices (such as balances, rulers, or calipers), but other errors can be caused by reading a measuring device incorrectly or by using broken or malfunctioning equipment. Such errors can have an impact on the reliability of the experiment's results; they affect the accuracy of measurements. For example, you use a balance to obtain the mass of a 100 gram block. Three measurements that you get are: 93.1 g, 92.0 g, and 91.8 g. The measurements are precise, as they are close together, but they are not accurate. Q: In statistics a boundary on the precision and accuracy is known as what? Choices: - instance - median - frequency - error A:
(Answer)
error
Ques: Answer the following question given this paragraph: Examples of Power Examples of power are limited only by the imagination, because there are as many types as there are forms of work and energy. (See Table 7.3 for some examples. ) Sunlight reaching Earth's surface carries a maximum power of about 1.3 kilowatts per square meter (kW/m 2). A tiny fraction of this is retained by Earth over the long term. Our consumption rate of fossil fuels is far greater than the rate at which they are stored, so it is inevitable that they will be depleted. Power implies that energy is transferred, perhaps changing form. It is never possible to change one form completely into another without losing some of it as thermal energy. For example, a 60-W incandescent bulb converts only 5 W of electrical power to light, with 55 W dissipating into thermal energy. Furthermore, the typical electric power plant converts only 35 to 40% of its fuel into electricity. The remainder becomes a huge amount of thermal energy that must be dispersed as heat transfer, as rapidly as it is created. A coal-fired power 6 plant may produce 1000 megawatts; 1 megawatt (MW) is 10 W of electric power. But the power plant consumes chemical energy at a rate of about 2500 MW, creating heat transfer to the surroundings at a rate of 1500 MW. (See Figure 7.25. Q: What does power imply is happening to energy? Choices: - is expanding - being destroyed - being created - being transferred A:
Ans: being transferred
(Q).
Answer the following question given this paragraph: The geometry of the BF 3 molecule is called trigonal planar . The fluorine atoms are positioned at the vertices of an equilateral triangle. The F-B-F angle is 120, and all four atoms lie in the same plane. Q: The geometry of the bf 3 molecule is called what? Choices: - fractal planar - spherical planar - distorted planar - trigonal planar A:
(A).
trigonal planar
Ques:Answer the following question given this paragraph: The reproductive organs grow very slowly during childhood and do not mature until puberty. Puberty is the period during which humans become sexually mature. In the U. S. , boys generally begin puberty at about age 12 and complete it at about age 18. Q: What is the period during which humans become sexually mature called? Choices: - adulthood - maturity - adolescence - puberty A:

Ans:puberty
Ques:Answer the following question given this paragraph: Catalysts interact with reactants so the reaction can occur by an alternate pathway that has a lower activation energy. Activation energy is the energy needed to start a reaction. When activation energy is lower, more reactant particles have enough energy to react so the reaction goes faster. Many catalysts work like the one in the Figure below . (You can see an animated version at the following URL. ) The catalyst brings the reactants together by temporarily bonding with them. This makes it easier and quicker for the reactants to react together. Notice how the catalyst is released by the product molecule at the end of the reaction. Q: What is the energy needed to start a reaction between catalysts and reactants called? Choices: - reaction energy - decomposition energy - conductivity energy - activation energy A:

Ans:
activation energy