FREE AND STUDY GAMES ABOUT BIOGEOCHEMICAL

PDF Download

FREE AND STUDY GAMES ABOUT BIOGEOCHEMICAL

CYCLE EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -18 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: phosphorus cycle

Answer:

Major biogeochemical cycle involving the movement of phosphorus throughout the biosphere and lithosphere. This cycle is important because phosphorus is an essential element for life and often is a limiting nutrient for plant growth.

Question 2: nitrogen fixation

Answer:

The process by which atmospheric nitrogen is converted to ammonia, nitrate ion, or amino acids.Microorganisms perform most of the conversion, but a small amount is also converted by lightning.

Question 3: biogeochemical cycle

Answer:

The cycling of a chemical element through the biosphere; its pathways, storage locations, and chemical forms in living things, the atmosphere, oceans, sediments, and the lithosphere.

Question 4: geologic cycle

Answer:

The formation and destruction of earth materials and the processes responsible for these events. The geologic cycle includes the following subcycles: hydrologic, tectonic, rock, and geochemical.

Question 5: carbon-silicate cycle

Answer:

A complex cycle over as long as 1/2 billion years. Includes geologic processes, like weathering, transport by waters, erosion & deposition of crustal rocks. Believed to provide important neg feedback mechanisms that control the temp of the atmosphere.

Question 6: rock cycle

Answer:

A group of processes that produce igneous, metamorphic, and sedimentary rocks.

Question 7: plate tectonics

Answer:

A model of global tectonics that suggests that the outer layer of Earth, known as the lithosphere, is composed of several large plates that move relative to one another. Continents and ocean basins are passive riders on these plates.

Question 8: tectonic cycle

Answer:

The processes that change Earth's crust, producing external forms such as ocean basins, continents, and mountains.

Question 9: chemical reaction

Answer:

The process in which compounds and elements undergo a chemical change to become a new substance or substances.

Question 10: micronutrients

Answer:

Chemical elements required in very small amounts by at least some form of life. Boron, copper, and molybdenum are examples.

Question 11: macronutrients

Answer:

Elements required in large amounts by living things. These include the big six - carbon, hydrogen, oxygen, nitrogen, phosphorus, and sulfur.

Question 12: nitrogen cycle

Answer:

A complex biogeochemical cycle responsible for moving important nitrogen components through the biosphere and other Earth systems. This is an extremely important cycle because nitrogen is required by all living things.

Question 13: limiting factor

Answer:

The 1 requirement for growth available in the least supply in comparison to the need of an organism.Once applied to crops, now often applied to any species.

Question 14: denitrification

Answer:

The conversion of nitrate to molecular nitrogen by the action of bacteria - an important step in the nitrogen cycle.

Question 15: hydrologic cycle

Answer:

Circulation of water from the oceans to the atmosphere and back to the oceans by way of evaporation, runoff from streams and rivers, and groundwater flow.

Question 16: drainage basin

Answer:

The area that contributes surface water to a particular stream network.

Question 17: carbon cycle

Answer:

Biogeochemical cycle of carbon. Carbon combines with and is chemically and biologically linked with the cycles of oxygen and hydrogen that form the major compounds of life.

Question 18: missing carbon sink

Answer:

Substantial amounts of carbon dioxide released into the atmosphere but apparently not reabsorbed and thus remaining unaccounted for.