What is a system, as described in the text?

• A group of unrelated parts that work independently.

• A group of parts that work together as a whole.

• A single part that functions on its own.

• A random collection of objects.

Which of the following is an example of Earth's system mentioned in the text?

• A car engine.

• A water cycle.

• A computer network.

• A solar panel.

What happens to magma as it flows up through cracks in Earth's crust?

• It turns into water.

• It solidifies into hard rock as it cools.

• It evaporates into the atmosphere.

• It forms rivers and lakes.

How does water return to Earth's surface in the water cycle?

• Through evaporation.

• Through precipitation.

• Through solidification.

• Through magma flow.

What can happen if small pieces of rock collect over time?

• They form magma.

• They evaporate into the atmosphere.

• They compact to form new rock.

• They dissolve into water.

Image showing Lake Okeechobee, part of a water system in southeastern Florida, with disruptions to the cycling of water leading to which environmental issue?

• Algae blooms

• Droughts

• Earthquakes

• Forest fires

What are the two main sources of energy that drive cycles of matter in the Earth system?

• Heat from the sun and heat from Earth's interior

• Heat from the moon and heat from Earth's core

• Heat from the sun and heat from the ocean

• Heat from Earth's atmosphere and heat from the sun

Which sphere of the Earth system is described as the realm of life?

• Geosphere

• Biosphere

• Atmosphere

• Hydrosphere

What is the primary characteristic of the geosphere in the Earth system?

• It is the realm of air

• It is the realm of water

• It is the realm of rocks

• It is the realm of life

Which sphere of the Earth system includes frozen water?

• Atmosphere

• Biosphere

• Cryosphere

• Geosphere