Grade 7

The 2013-2014 school year marks the introduction of a new seventh grade curriculum with a content focus on matter cycles and energy in physical, earth and life systems.

In Grade 7, instructional time should focus on three critical areas:

  1. Using tools to accurately collect and analyze a variety of forms of scientific data;
  2. Producing clear and coherent writing in which development, organization, and style are appropriate to task, purpose, and audience; and
  3. Using models to explain natural phenomena.
Understandings Essential Questions
Motion, Energy, and Forces
  • Energy is never created nor destroyed. When energy is transformed from one form to another the total energy stays the same but some energy is transferred to the surrounding environment.
  • Scientists rely on universal laws that describe the relationship between and among motion, forces and energy that we can use to explain and predict the world around us.
  • Scientists and engineers collaborate using processes to design and redesign best possible solutions to meet the needs of society.
  • Why should I care about energy and matter?
  • How do everyday things and machines work?
  • How do scientists and engineers work together?
  • ‪Everything‬ ‪ is made of matter. All matter is made up of a limited number of types ‬‪of atoms that combine and recombine to result in all known substances. ‬
  • ‪Each substance has a unique set of properties that are independent of the sample size and can be used to identify the substance.‬
  • ‪Kinetic Energy (heat) moves from high to low energy and affects the motion of particles in predictable ways.‬
  • ‪Matter is conserved and energy is released, captured or stored in both Chemical and Physical changes.‬
  • The Particle Model of Matter can explain many properties and interactions of matter, such as heat conduction, chemical reactions, states of matter and conservation of matter.
  • Why should I care about energy and matter?
  • How does learning chemistry help us understand our world?
Matter Cycles and Energy in Earth Systems
  • ‪Matter goes through physical and chemical changes as it cycles within and between the earth’s systems (water and rock cycle).‬
  • ‪Convection drives much of the movement of matter in Earth systems. ‬
  • Why should I care about energy and matter?
  • ‪Where does my water come from and where does it go?‬
  • ‪How does Earth change over time? ‬
Matter Cycles and Energy in Living Systems
  • ‪Photosynthesis‬ ‪ and cellular respiration are chemical reactions that cycle matter ‬‪through the ecosystem and support the transfer of energy through the ‬‪ecosystem. ‬
  • ‪Matter transfers between biotic and abiotic elements of the environment and is conserved and recycled in a living system.‬
  • ‪Photosynthesis‬‪ is the process by which energy and carbon enter most ecosystems (some ‬‪extremophiles use other chemical reactions as an energy source.) ‬
  • As carbon-containing products of photosynthesis flow through the food web, energy is used at each level and released therefore not available for the next level.
  • Why should I care about energy and matter?
  • Where does my energy come from?