Earth's Spheres

The biosphere is the nonliving part of Earth.

• True

• False

The hydrosphere relates to water.

• True

• False

Which best describes the relationship between Earth's four spheres?

• process

• system

• connection

Which of Earth's spheres is composed of a mixture of gases?

• biosphere

• hydrosphere

• atomosphere

• geosphere

Which is an example of a human impact on the geosphere?

• Creating parks for recreational use.
• Building dams to control water flow.
• Mining operations that remove large amounts of earth and rock.

Earth's outermost sphere is called the ___________.

• biosphere

• atmosphere

• geosphere

• hydrosphere

Which is an example of a human impact on the biosphere?

• Hunting an animal to extinction

• Producing gas from cars to create pollution in the air

• Creating wildlife reserves to protect species.
• Dumping trash into the oceans

Which of Earth's spheres is involved when a volcano erupts? (Select all that apply.)

• Biosphere

• Geosphere

• Atmosphere

• Hydrosphere

The most abundant gas in Earth's atmosphere is?

• Nitrogen

• Carbon

• Oxygen

• Hydrogen

A change to one system will affect

• the same system
• no systems
• only the main system
• all other systems