and graph the amounts and percentages of water and fresh water in
various reservoirs to provide evidence about the distribution of water
and combine information about ways individual communities use science
ideas to protect the Earth’s resources and environment.
- The role of water in Earth's surface processes
all of Earth’s available water is in the ocean. Most fresh water is in
glaciers or underground; only a tiny fraction is in streams, lakes,
wetlands, and the atmosphere.
- Human impacts on earth's systems
activities in agriculture, industry, and everyday life have had major
effects on the land, vegetation, streams, ocean, air, and even outer
space. But individuals and communities are doing things to help protect
Earth’s resources and environments.
- Patterns of change can be used to make predictions
- Cause and effect relationships are routinely identified, tested, and used to explain change.
- Scale, Proportion and Quantity
- Natural objects exist from the very small to the immensely large.
- Systems and System Models
- A system can be described in terms of its components and their interactions.
- Things may change rapidly or slowly.