Which has stronger attractions among its submicroscopic particles: a solid at 25°C or a gas at 25°C?
A. The attractions among the submicroscopic particles of the solid are much stronger-so much stronger that they hold the particles of the solid absolutely still.
B. The temperatures of these two materials are the same, which means that the attractions among their submicroscopic particles are also of the same strength.
C. The attractions among the submicroscopic particles of the solid must be stronger than the attractions among the particles of the gas.
D. The submicroscopic particles of the gas are moving faster. This means that they have more energy, which means that the attractions among them must be stronger.
Answer: C
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Which of the following statements about fracking is false?
a. Between 10% and 40% of the fracking fluid pumped down a well returns to the surface as toxic fracking flowback wastewater. b. After a 3-year study, the EPA reported there was no evidence of the presence of toxic chemicals associated with fracking in contaminated well water in Pavillion, Wyoming. c. Discharging of fracking flowback waste through wastewater treatment plants has caused corrosion of downstream utility company’s equipment in Pennsylvania. d. The fracking flowback wastewater includes chemicals that are carcinogenic, neurotoxic and radioactive. e. Contamination of groundwater supplies by fracking flowback wastewater leaking through a cracked pond liner is a very real possibility.
Judge the following sentence according to the criteria given below: Areas that have the greatest biomass have the highest water temperatures BECAUSE cold water contains higher amounts of nutrients than warm water
A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct, but the reason is incorrect. D) The assertion is incorrect, but the reason is correct. E) Both the assertion and the reason are incorrect.
If water is so abundant on Earth, why are water resources such a big concern?
A) Water resources are not necessarily where humans need them and when they need them. B) Humans are not very adept at exploiting water resources, so many go unused. C) Most of the water on earth is frozen in polar ice sheets. D) Most of the water is caught up in the hydrologic cycle and is therefore not readily available.
What evidence shown on the map indicates that this type of boundary is present?
After drawing in the plate boundaries using the appropriate symbols on the tectonic map below, answer the question above. When asked to cite evidence to support your answers, only cite evidence that you can see on this map.
Scale: 1 cm = 300 km 11 inch = 500 miles2