Science Curriculum – Grade 7

Physical Properties and Changes

  • changes in particle motion, temperature, and phase (state) change
  • density is a property of matter
  • mixtures are combinations of substances.
  • fields exist between objects exerting forces on each other even though the objects are not in contact.

Chemical properties and Changes

  • atomic composition of simple molecules
  • synthetic materials come from natural resources and impact society.
  • determine if a chemical reaction has occurred.
  • number of atoms does not change in a chemical reaction

Forces and Motion

  • apply Newton’s Laws in various investigations and applications
  • gravitational interactions between objects with different masses

Energy

  • electric and magnetic forces.
  • relationships between the kinetic energy and the mass of an object as it relates to the speed of an object.
  • objects interacting at different distances changes, different amounts of potential energy are stored in the system.
  • design, construct, and test a device that either minimizes or maximizes thermal energy transfer
  • when work is done on or by a system, the energy of the system changes as energy is transferred to or from the system.
  • energy can be transferred by electric currents.
  • use mathematical representations to describe waves that include frequency, wavelength, and how the amplitude of a wave is related to the energy in a wave.
  • waves are reflected, absorbed, or transmitted through various materials

Engineering Design

  • Define the criteria and constraints of a design problem with sufficient precision to ensure a successful solution, taking into account relevant scientific principles and potential impacts on people and the natural environment that may limit possible solutions.
  • Evaluate competing design solutions using a systematic process to determine how well they meet the criteria and constraints of the problem.
  • Analyze data from tests to determine similarities and differences among several design solutions to identify the best characteristics of each that can be combined into a new solution to better meet the criteria for success.
  • Develop a model to generate data for iterative testing and modification of a proposed object, tool, or process such that an optimal design can be achieved.
  • Undertake a design project to construct, test, and modify a device that either releases or absorbs thermal energy during a chemical and/or physical process.
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