Earth's Subsystems (ES)

Which of the following describes a habitable Earth?

• right distance from the Sun

• presence of oxygen in the hydrosphere

• has a weak magnetic field

• dominant presence of solid ice

Which of the following is NOT one of the reasons why the hydrosphere is important?

• It sustains various of life forms

• it helps in regulating the atmoshere

• it plays important role in ecosystems

• it plays a major role in the movement of tectonic plates

Which of the following is NOT a correct description of oxygen gas (O₂)?

• used by animals for respiration

• taken in by plants for photosynthesis

• converted to carbon dioxide during respiration

• a colorless, odorless, tasteless gas essential to living organisms

Which of the following describes a Goldilocks zone?

• a zone composed mainly of frozen water

• a region where life is impossible to exist

• a zone composed only of rocks and other celestial debris

• an area where the temperature the temperature is not too hot and not too cold

In which subsystem are gases such as oxygen gas, water vapor, and nitrogen gas found?

• hydrosphere

• geosphere

• biosphere

• atmosphere

Which of the following is an important characteristic of earth in sustaining life?

• Earth's position beyond the Goldilocks Zone

• The atmosphere that blocks the rays of the sun for reaching Earth

• The abundant nitrogen in the atmosphere made life possible on Earth

• The presence of liquid water which plays a vital role for cell's metabolism

Which of the following is the reason for the importance of Earth's subsystem?

• The subsystems influence Earth's encounter with space objects

• The subsystems contribute scarcely in flow of matter and energy

• The subsystems barely influence the survival of different organisms

• The subsystems influence the climate, geological processes, and life on Earth

Why is the ozone layer important in sustaining life on Earth?

• It is where Earth satellites orbit and Aurora show.

• Influences hydro-meteorological phenomenon such as storms

• It shields the Earth from the Sun's ultraviolet radiation and keeps the planet warm

• It is where celestial objects get burned and disintegrated upon entering Earth

Which subsystem helps regulate the temperature of the Earth so we do not experience too much hotness or coldness

• biosphere

• lithosphere

• atmosphere

• hydrosphere

In which subsystem do bodies of water surround the Earth a part of?

• hydrosphere

• geosphere

• biosphere

• atmosphere