Unit 4

Water, Air, Land, and Climate Change

Moodle Section 14 - Water

Essential Questions
  • How are the Earth's water resources distributed?
  • Why is fresh water a limited resource?
  • How are ground water and surface water related?


Moodle Section 15 - Air

Essential Questions:
  • What are air pollutants and what are their sources?
  • How does smog form?
  • How do temperature inversions trap air pollution?


Moodle Topic 16 - Atmosphere and Climate Change

Essential Questions:
  • What is the difference between weather and climate?
  • What is the greenhouse effect?
  • What evidences are there that global warming is occurring?


Moodle Section 17 - Land

Essential Questions:
  • What is the difference between urban and rural land?
  • What are three major ways in which humans us land?
  • What are ecosystem services?
  • What are some of the benefits of land management and conservation?

Moodle Section 18 - Food and Agriculture

Essential Questions:
  • Why is it difficult to provide food for all the world's needs?
  • How do we keep our soil healthy to sustain crops and feed the world population?

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