Practice Quiz

Praxis II General Science: Content Knowledge Exam Prep - Question List

Select how would you like to study

Study Mode Free Daily Question Test Mode
81.
The hydraulic conductivity of a sediment is a measure of the rate at which the sediment can transmit water. Which of the following sediments is likely to have the greatest hydraulic conductivity?
  1. A poorly sorted mixture of fine- and medium-sized sand grains
  2. A well-sorted silt deposit
  3. A poorly sorted mixture of clay and small gravel
  4. A well-sorted coarse-sand deposit
See answer
82.
The High Plains Aquifer extends from South Dakota to central Texas. Since the early 1900s, the surface of the aquifer has dropped significantly in parts of Texas, Oklahoma, and Kansas. This change in the aquifer is primarily due to which of the following?
  1. A reduction in forest cover from logging that has increased evaporation rates from exposed soils overlying the aquifer.
  2. A shift in climate conditions during the past 100 years that has reduced the water available for aquifer recharge.
  3. The compaction of soils from mechanized farming that has reduced the permeability of soils overlying the aquifer.
  4. The withdrawal of water for agricultural use that has been greater than the aquifer's recharge rate from precipitation.
See answer
83.
Water in its solid form is less dense than water in its liquid form. This characteristic is primarily a result of the:
  1. Rigid three-dimensional structure of ice that keeps water molecules from getting too close to each other.
  2. High viscosity of liquid water that makes its molecules more closely packed than other liquids.
  3. Internal kinetic energy of ice that keeps the molecules in ice relatively far apart due to their rapid vibration.
  4. High heat capacity of liquid water that allows it to store energy with only a small change in volume.
See answer
84.
Graded bedding in a sedimentary rock is an indication of which of the following depositional environments?
  1. Desert
  2. High-energy beach
  3. Marginal marine
  4. Alluvial fan
See answer
85.
Measuring the age of a lava flow by radiometric dating requires:
  1. Comparing the proportion of radioactive parent isotope to stable daughter product in the rock.
  2. Assessing the level of radioactivity emitted by the isotopes in a sample of the rock with a Geiger counter.
  3. Evaluating the changes in the rock's mineral structure to determine the sample's exposure to ionizing radiation.
  4. Analyzing changes in the atomic number of the radioactive isotopes in the rock by measuring beta and alpha emissions from a sample.
See answer

Select how would you like to study

Study Mode Free Daily Question Test Mode