MI CLiMB Science Benchmark Clarification

Science Benchmark Clarification, Instruction, and Assessment
Strand: V. Use Scientific Knowledge from the Earth and Space Sciences in Real-World Contexts
Content Standard: 1. All students will describe the Earth’s surface; describe and explain how the
Earth’s features change over time; and analyze effects of technology on the Earth’s surface and
resources. (Geosphere)
Benchmark
Explain the surface features of the Great Lakes region using the Ice Age theory
(SCI.V.1.HS.1).
Benchmark Clarification
There is evidence to support the Ice Age theory. Students will:
• Explain moraines and till which are deposits of unsorted sediments
• Explain glacial scratches (striations) left on bedrock (link to Glossary)
• Explain kettle lakes: depressions in glacial deposits left by melting ice blocks, later
filled with water
• Explain parallel arrangement of moraines and Great Lakes’ shorelines
• Explain erratics: large boulders, mostly of igneous or metamorphic origin, which are
deposited in areas of mostly sedimentary bedrock
• Hypothesize what climatic changes may have occurred to produce ice ages
Bedrock: the undisturbed solid rock generally found beneath loose surface material
Key Concepts (voc.)
Glacial processes:
• climate change
• snow changing to ice
• pressure
• moving (advance, retreat)
• melting
See Long-Term Climate Change SCI.V.3.HS.1.
Deposits:
• features: hills, lakes, Great Lakes
Tools:
• relief map
• topographic map
• elevation map
• geological maps
06/29 ...