Key Terms - Topic 2: UNIT 1: ENERGY TRANSFER IN THE BIOSPHERE

The hydrologic cycle is the (a)   .

• The process of carbon cycling betwe
• The movement of water through the b
• The attraction between water molecu
• The cycling of phosphorus in ecosys

What term describes the attraction between molecules of the same substance?

• Adhesion

• Cohesion

• Hydrogen Bonding

• Density

Which cycle involves both rapid and slow cycling of carbon?

• Sulphur Cycle

• Nitrogen Cycle

• Carbon Cycle

• Phosphorus Cycle

What process converts atmospheric nitrogen into a form usable by plants?

• Nitrogen Fixation

• Denitrification

• Photosynthesis

• Sulphur Deposition

The unique property of water due to hydrogen bonding is that (a)   .

• It is a universal solvent.
• Ice is less dense than liquid water
• Water has a gaseous phase.
• Water molecules repel each other.

The term for the attraction between molecules of different substances is (a)  

• Cohesion
• Adhesion
• Biogeochemical Cycling
• Greenhouse Effect

Which cycle does NOT have a gaseous phase?

• Sulphur Cycle

• Phosphorus Cycle

• Carbon Cycle

• Nitrogen Cycle

Match the following descriptions with the correct biogeochemical process.

• Biogeochemical cycling

• The circulation of water in the hydrologic cycle.

• Carbon cycle

• The rapid cycling of carbon through photosynthesis.

• Acid rain formation

• The flow of chemical elements between organisms and the environment.

• Hydrologic cycle

• The formation of acid rain from sulfur oxides.

Which process traps heat in Earth’s atmosphere?

• Acid Deposition

• Biogeochemical Cycling

• Greenhouse Effect

• Homeostasis

What is acid deposition?

• The cycling of sulphur through ecosystems.

• The release of acid into oceans from volcanic eruptions.

• The deposition of acidic compounds as rain or dry particles.

• The emission of CO₂ during fossil fuel combustion.