Cycles of Matter

Front

What is the process by which a gas changes to a liquid?

Back

Condensation is the process where gas transforms into a liquid, often seen when water vapor cools and forms droplets.

Front

What is another name for evaporation of water through the leaves of plants?

Back

Transpiration is the process where water is absorbed by plant roots, moves through plants, and is released as vapor through pores in leaves.

Front

Which process allows carbon to return to the atmosphere from living organisms?

Back

Cellular respiration of plants and animals releases carbon dioxide back into the atmosphere.

Front

What is the primary gas that makes up 78% of the Earth's atmosphere?

Back

Nitrogen is the most abundant gas in the Earth's atmosphere, comprising about 78%.

Front

Why is nitrogen fixation important for plants?

Back

Nitrogen fixation is crucial because atmospheric nitrogen is not usable by plants; it must be converted into a form they can absorb.

Front

What is the process of water moving through the soil called?

Back

Percolation is the process where water moves downward through soil and rock layers, filtering and replenishing groundwater.

Front

What is the term for the conversion of liquid water into vapor?

Back

Evaporation is the process where liquid water is transformed into water vapor, often due to heat.

Front

What role do decomposers play in the nitrogen cycle?

Back

Decomposers break down organic matter, returning nitrogen to the soil in a form that plants can use.

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants use sunlight to convert carbon dioxide and water into glucose and oxygen.

Front

How does combustion of fossil fuels affect the carbon cycle?

Back

Combustion of fossil fuels releases carbon dioxide into the atmosphere, increasing greenhouse gas concentrations.