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6th Grade Performance Expectations: MS-ESS2-4: The Water Cycle (ESS2.C: …
6th Grade Performance Expectations: MS-ESS2-4: The Water Cycle
Developing and Using Models:
Develop a model to describe unobservable mechanisms
CCSS.ELA-LITERACY.W.6.2.D
Use precise language and domain-specific vocabulary to inform about or explain the topic.
ESS2.C: The Roles of Water in Earth’s Surface Processes
Water continually cycles among land, ocean, and atmosphere via transpiration, evaporation, condensation and crystallization, and precipitation, as well as downhill flows on land.
The complex patterns of the changes and the movement of water in the atmosphere, determined by winds, landforms, and ocean temperatures and currents, are major determinants of local weather patterns.
Global movements of water and its changes in form are propelled by sunlight and gravity.
Variations in density due to variations in temperature and salinity drive a global pattern of interconnected ocean currents.
Water’s movements—both on the land and underground—cause weathering and erosion, which change the land’s surface features and create underground formations.
CCSS.ELA-LITERACY.W.6.1.B
ELD: Support claim(s) with clear reasons and relevant evidence, using credible sources and demonstrating an understanding of the topic or text.
CCSS.ELA-LITERACY.W.6.2
ELD: Write informative/explanatory texts to examine a topic and convey ideas, concepts, and information through the selection, organization, and analysis of relevant content.
ELD Sentence Frames to explain reasoning:
When water evaporates it changes states from a
__
to a
_
When water condenses it changes states from a
__
to a
__
Energy and Matter
Matter is conserved because atoms are conserved in physical and chemical processes.
Energy may take different forms (e.g. energy in fields, thermal energy, energy of motion).
Within a natural system, the transfer of energy drives the motion and/or cycling of matter.
The transfer of energy can be tracked as energy flows through a natural system.
CCSS.ELA-LITERACY.W.6.2
ELD: Write informative/explanatory texts to examine a topic and convey ideas, concepts, and information through the selection, organization, and analysis of relevant content.
CCSS.ELA-LITERACY.W.6.1
ELD: Write arguments to support claims with clear reasons and relevant evidence.
Understanding Transpiration through
Color Changing Flowers Science Project
Water evaporates from the plant through transpiration.
As water evaporates in the petals or any part of the plant exposed to air, a negative pressure is created in the xylem, resulting in suction pulling the water upward just like you draw water upward when you suck on a straw.
CCSS.ELA-LITERACY.W.6.1.B
ELD: Support claim(s) with clear reasons and relevant evidence, using credible sources and demonstrating an understanding of the topic or text.
CCSS.ELA-LITERACY.W.6.2
ELD: Write informative/explanatory texts to examine a topic and convey ideas, concepts, and information through the selection, organization, and analysis of relevant content.
Transpiration Photo
to invite students to observe what they notice and what they wonder.
Essential Questions of the Unit:
What energy drives the water cycle?
What force helps drive the water cycle?