How to learn Grade 7: Science

South Carolina academic standards: Science, Grade 7

0 of 11 concepts ready to learn · Markdown, for your AI

1. Ecosystems: Interactions, Energy, and Dynamics

1. Food Webs & Interdependence: Construct and interpret food webs showing the interdependence of organisms in an ecosystem, explaining how a change in one population affects others
2. Biodiversity & Resilience: Explain what biodiversity means, why high biodiversity makes ecosystems more resilient, and describe the ways human activity threatens biodiversity (habitat destruction, pollution, invasive species, climate change)
3. Matter Cycling in Ecosystems: Develop a model to describe the movement of matter among plants, animals, decomposers, and the environment in an ecosystem

2. From Molecules to Organisms: Structures and Processes

1. Energy from Food & the Sun: Use models to describe that energy in animals' food was once energy from the sun, transferred through plants or other organisms
2. Photosynthesis: Explain photosynthesis as the process by which plants use light energy to convert carbon dioxide and water into glucose and oxygen, and describe how mineral nutrients are absorbed through roots

3. Energy

1. Speed and energy: Use evidence to construct an explanation relating the speed of an object to the energy of that object
2. Energy stores and transfers: Identify the main energy stores (kinetic, gravitational potential, elastic potential, thermal, chemical, nuclear, electromagnetic) and the pathways by which energy is transferred between stores (mechanically, electrically, by heating, by radiation)

4. Matter and Its Interactions

1. Reactions That Release or Absorb Heat: Distinguish between exothermic reactions (release energy, temperature rises) and endothermic reactions (absorb energy, temperature falls), with everyday and industrial examples
2. Conservation of Mass: Measure and provide evidence that the total weight of matter is conserved regardless of the type of change (heating, cooling, or mixing)
3. Atoms, Elements & Compounds: Explain the differences between atoms, elements, and compounds; describe the simple Bohr model of the atom (nucleus with protons and neutrons, electrons in shells); and write and interpret chemical symbols and simple formulae
4. Pure Substances & Mixtures: Distinguish between pure substances and mixtures, identify formulations as useful mixtures with precise compositions, and use melting and boiling points to test for purity