Module: Earth’s Systems
DCI: ESS2.A (A) Earth Materials and Systems – Earth’s major systems
are the geosphere (solid and molten rock, soil, and sediments), the hydrosphere
(water and ice), the atmosphere (air), and the biosphere (living things,
including humans). The ocean supports a variety of ecosystems and organisms.
PE: 5-ESS2-1 Develop a model
using an example to describe ways the geosphere, biosphere, hydrosphere, and/or
atmosphere interact.
[Clarification
Statement: Examples could include the influence of the ocean on ecosystems,
landform shape, and climate; the influence of the atmosphere on landforms and
ecosystems through weather and climate; and the influence of mountain ranges on
winds and clouds in the atmosphere. The geosphere, hydrosphere, atmosphere, and
biosphere are each a system.] [Assessment Boundary: Assessment is limited to
the interactions of two systems at a time.]
Most questions should deal with an interaction between two of the systems listed. Questions that merely ask for details of a single system should be avoided.
Details about a system are fair game in a question that deals with system interactions.
Our belief is that the use of the word "model" in the NGSS does not always imply the construction of a physical representation, but more likely refers to a conceptual model (i.e. concept map) as per definition #8 of Model in the OED.
a. A simplified or idealized description or conception of a particular system, situation, or process, often in mathematical terms, that is put forward as a basis for theoretical or empirical understanding, or for calculations, predictions, etc.; a conceptual or mental representation of something. Freq. with modifying word. Cf. sense A. 1b.
Possible Question Starters:
Which of the following is the best example of how (system #1) affects (system#2)?
When (something) occurs, this represents an interaction between which two systems?
Which of the following correctly identifies one of the interactions represented by the arrows in the diagram?
W = Plants and animals exchanging gases (wrong)
X = Course of a river changed by rising landform (right)
etc
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