1. The rotation of Earth around its axis is responsible for which of the following?
A. The force of gravity
B. The day and night cycle Correct
C. The temperature differences between seasons
D. The movement of continents relative to one another
Explanation
Rotation day night. Gravity mass. Seasons tilt orbit. Continents drift. 24 hour cycle.
2. Which TIIREE of the following agricultural practices are most likely to have a negative impact on the environment?
A. Increasing the amount of fertilizer applied to a field to maximize crop yields Correct
B. Providing a field with excessive amounts of water to maintain ground saturation Correct
C. Applying nonselective herbicides to a field at the end of the growing season to eliminate weeds Correct
D. Planting crops in a field with minimal disturbance of the surface soil to reduce soil erosion
Explanation
Fertilizer excess runoff pollution. Water excess waste salinization. Herbicides nonselective kill beneficial. No till positive. Negative practices harm. D positive conservation.
3. Which TWO of the following are powered most directly by the Sun's energy?
A. Surface currents in the ocean Correct
B. Volcanic eruptions
C. Tectonic plate movements
D. Convection in the atmosphere Correct
Explanation
Sun heats water winds currents convection. Volcanoes geothermal. Plates internal heat. Solar drive weather ocean.
4. Natural gas-fired power plants are considered greenhouse gas emitters because the burning of natural gas produces which of the following?
A. Hydrogen
B. Radon
C. Carbon dioxide Correct
D. Helium
Explanation
Combustion CO2. Hydrogen fuel. Radon radioactive. Helium inert. Methane burn CO2.
5. Which of the following tools is used to measure atmospheric pressure?
A. Barometer Correct
B. Thermometer
C. Anemometer
D. Hygrometer
Explanation
Barometer pressure. Thermometer temp. Anemometer wind. Hygrometer humidity. Air weight.