CRM 2.1 Biogeochemical Cycles

Front

During photosynthesis, the sun’s energy is used by green plants to produce glucose, which the plants then use for food. What is the energy transformation taking place?

Back

Light energy is converted to chemical energy

Front

What energy transformation occurs in the food pyramid?

Back

Chemical Energy -> Mechanical Energy

Front

Based on the law of conservation of energy, what happened to the energy as the reaction progressed?

Back

It was converted to chemical energy stored in the sugar.

Front

What type of system best describes putting a lid on a pot of boiling water?

Back

Closed system (energy enters and leaves but matter does not)

Front

Which scientific law supports the energy exchange in biological organisms as they consume energy-storing molecules and release energy to the environment by doing work?

Back

The Law of Conservation of Energy

Front

Processes involved in the water cycle are represented by letters in the diagram below. In which groups are these processes correctly identified? Options: A-Condensation, B-Transpiration, C-Evaporation, D-Precipitation

Back

Precipitation

Front

What is the role of Nitrates in the Nitrogen Cycle?

Back

It is used by plants for protein synthesis

Front

Which gas is the greatest contributor to climate change? Options: Ozone, Methane, Nitrous Oxide, Carbon Dioxide

Back

Carbon Dioxide

Front

Which of the following statements best describes a scientific model?

• Models can be manipulated.
• Models can not be mathematical equations.
• Models can not be used to make predictions.
• Models can only show conceptual views of science.

Back

Models can be manipulated.

Front

What is a limitation to using models for studying systems in science?

Back

Most models are not to scale and actual sizes cannot be studied.