Use information from several sources to provide evidence that Earth events can occur quickly or slowly. 2-ESS1-1
Clarification Statement: Examples of events and timescales could include volcanic explosions and earthquakes, which happen quickly and erosion of rocks, which occurs slowly.
Assessment Boundary: Assessment does not include quantitative measurements of timescales.
Compare multiple solutions designed to slow or prevent wind or water from changing the shape of the land. 2-ESS2-1
Clarification Statement: Examples of solutions could include different designs of dikes and windbreaks to hold back wind and water, and different designs for using shrubs, grass, and trees to hold back the land.
Assessment Boundary: none
Develop a model to represent the shapes and kinds of land and bodies of water in an area. 2-ESS2-2
Clarification Statement: none
Assessment Boundary: Assessment does not include quantitative scaling in models.
Obtain information to identify where water is found on Earth and that it can be solid or liquid. 2-ESS2-3
Developing and Using Models
Modeling in K–2 builds on prior experiences and progresses to include using and developing models (i.e., diagram, drawing, physical replica, diorama, dramatization, or storyboard) that represent concrete events or design solutions.
Develop a model to represent patterns in the natural world. (2-ESS2-2)
Constructing Explanations and Designing Solutions
Constructing explanations and designing solutions in K–2 builds on prior experiences and progresses to the use of evidence and ideas in constructing evidence-based accounts of natural phenomenon and designing solutions.
Make observations from several sources to construct an evidence-based account for natural phenomena. (2-ESS1-1)
Compare multiple solutions to a problem. (2-ESS2-1)
Obtaining, Evaluating, and Communicating Information
Obtaining, evaluating, and communicating information in K–2 builds on prior experiences and uses observations and texts to communicate new information.
Obtain information using various texts, text features (e.g., headings, tables of contents, glossaries, electronic menus, icons), and other media that will be useful in answering a scientific question. (2-ESS2-3)
The History of Planet Earth
Some events happen very quickly; others occur very slowly, over a time period much longer than one can observe. (2-ESS1-1)
Earth Materials and Systems
Wind and water can change the shape of the land. (2-ESS2-1)
Plate Tectonics and Large-Scale System Interactions
Maps show where things are located. One can map the shapes and kinds of land and water in any area. (2-ESS2-2)
The Roles of Water in Earth’s Surface Processes
Water is found in the ocean, rivers, lakes, and ponds. Water exists as solid ice and in liquid form. (2-ESS2-3)
Optimizing the Design Solution
Because there is always more than one possible solution to a problem, it is useful to compare and test designs. (secondary to 2-ESS2-1)
Patterns in the natural world can be observed. (2-ESS2-2), (2-ESS2-3)
Stability and Change
Things may change slowly or rapidly. (2-ESS1-1), (2-ESS2-1)
Influence of Science, Engineering, and Technology on Society and the Natural World
Developing and using technology has impacts on the natural world. (2-ESS2-1)
Science Addresses Questions About the Natural and Material World
Scientists study the natural and material world. (2-ESS2-1)