Unit 5 — Thermal Energy
Description
This unit focuses on thermal energy, temperature, and heat transfer. Students investigate the relationship between temperature and the average kinetic energy of particles, and examine how energy transfers between objects and environments. The unit integrates engineering design practices, requiring students to define problems, evaluate competing solutions, and develop and test devices that minimize or maximize thermal energy transfer.
Essential Questions
- What is the relationship between temperature and thermal energy?
- Does energy transfer from hot to cold or cold to hot?
- What is the difference between conduction, convection, and radiation?
- What factors affect the amount of energy transfer needed to change the temperature of matter?
Learning Objectives
- Measure temperature as an indicator of average kinetic energy of particles in matter
- Explain how the type, state, and amount of matter affect total energy in a system
- Identify and describe the three mechanisms of heat transfer: conduction, convection, and radiation
- Define design criteria and constraints for thermal energy problems with precision
- Evaluate competing design solutions systematically to determine how well they meet criteria and constraints
- Analyze test data to identify similarities and differences among design solutions
- Design, construct, and test a device that minimizes or maximizes thermal energy transfer
- Plan an investigation to determine relationships among energy transferred, type of matter, mass, and temperature change
Supplemental Resources
- Thermometers for measuring temperature during thermal energy investigations
- Graphic organizers for documenting design criteria, constraints, and test results
- Chart paper for recording observations about conduction, convection, and radiation mechanisms
- Index cards for categorizing materials as conductors or insulators of thermal energy
- Markers and colored pencils for creating visual models of heat transfer processes
No core standards aligned for this unit.
Students read and analyze informational texts about fossil records, anatomical structures, and embryological development, citing textual evidence to support scientific explanations and engaging in collaborative discussions about evolutionary relationships.
Students apply the engineering design process to identify steps for solving problems and analyze the impact of modifying resources in a system, connecting to the thermal energy transfer device design challenge in Unit 5.
Formative Assessments
- Classroom investigations measuring temperature changes in matter samples with different masses and material types
- Hands-on testing and evaluation of competing design solutions for thermal devices
- Student observations and questions during demonstrations of conduction, convection, and radiation
- Written explanations of the direction of heat flow and the factors affecting energy transfer
- Design process documentation showing criteria definition, constraint identification, and iterative modifications
Summative Assessment
Students design, construct, and test a device that either minimizes or maximizes thermal energy transfer based on defined criteria and constraints. Students evaluate the effectiveness of their design through data analysis and propose modifications to improve performance.
Benchmark Assessment
— not configured —
Alternative Assessment
Students may demonstrate understanding of thermal energy and heat transfer through a hands-on practical task with teacher guidance, such as sorting pictures or objects by heat transfer mechanism, or explaining the three mechanisms of heat transfer using provided sentence frames and visual diagrams. For the design project, students may work with a teacher-selected or pre-assembled device and analyze its effectiveness through guided data collection and interpretation rather than independent design and construction.
IEP (Individualized Education Program)
Students may benefit from graphic organizers that visually represent the relationships among temperature, particle motion, and heat transfer mechanisms, reducing the cognitive load of holding multiple abstract concepts in working memory simultaneously. Provide chunked directions for multi-step investigation procedures, and allow oral or diagram-based explanations as alternatives to extended written responses when demonstrating understanding of energy transfer concepts. During the engineering design project, break the design-build-test cycle into clearly sequenced checkpoints with teacher or peer feedback at each stage, and offer sentence frames or structured templates to support design documentation. Grading should prioritize demonstration of conceptual understanding over the completeness of written output.
Section 504
Ensure students have access to extended time during both investigations and the summative design project, particularly when recording observational data or completing written explanations of heat transfer. Preferential seating near demonstrations of conduction, convection, and radiation supports students who benefit from reduced visual or auditory distraction. Providing printed copies of investigation procedures and data tables in advance allows students to focus attention on scientific reasoning rather than transcription during class.
ELL / MLL
Build and reinforce the unit's core vocabulary — including terms such as thermal energy, conduction, convection, radiation, temperature, and kinetic energy — through visual word walls, labeled diagrams, and repeated exposure in context before and during instruction. Use physical demonstrations and visual models of heat transfer mechanisms to make abstract processes concrete and accessible across language proficiency levels. Simplify procedural directions for investigations using short sentences and numbered steps, and allow students to record observations or explain reasoning using labeled sketches or in their home language as an intermediate step toward English production.
At Risk (RTI)
Connect new concepts to familiar, everyday experiences with thermal energy — such as feeling warmth from sunlight, touching a cold surface, or observing steam — to activate prior knowledge and build confidence before introducing formal terminology. Provide partially completed data tables and guided observation prompts during investigations to lower the entry barrier and keep students focused on the science rather than organizational demands. During the engineering design project, offer a structured planning template that scaffolds the criteria-and-constraints definition process, helping students engage meaningfully with the design challenge without becoming overwhelmed by open-ended expectations.
Gifted & Talented
Encourage students to investigate the quantitative relationships among mass, material type, and temperature change through self-directed data collection and analysis that goes beyond the classroom investigation parameters, applying mathematical reasoning to model thermal behavior. Students may explore real-world engineering contexts — such as passive building design, insulation materials used in aerospace, or climate-adaptive infrastructure — to situate their design work within broader scientific and societal challenges. Invite students to critically evaluate the limitations of their own design solutions by proposing and justifying further iterations, drawing on principles of specific heat capacity or thermodynamic efficiency to deepen their analysis beyond what is required of the class.