An electric current can produce a magnetic field and that a changing magnetic field can produce an electric current
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United States Video Lessons
Grade 9 Science Video Lessons
Watch 31 dedicated curriculum video lessons.
Analyze data to support the claim that Newton’s second law of motion describes the mathematical relationship among the net force on a macroscopic object, its mass, and its acceleration
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Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs
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Changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay
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Communicate scientific and technical information about why the molecular-level structure is important in the functioning of designed materials
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Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy
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Increased amounts of products at equilibrium
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Relative properties of elements based on the patterns of electrons in the outermost energy level of atoms
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Structure of substances at the bulk scale to infer the strength of electrical forces between particles
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Construct an explanation based on evidence for how the structure of DNA determines the structure of proteins which carry out the essential functions of life through systems of specialized cells
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Construct and revise an explanation based on evidence for how carbon, hydrogen, and oxygen from sugar molecules may combine with other elements to form amino acids and/or other large carbon-based molecules
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Construct and revise an explanation based on evidence for the cycling of matter and flow of energy in aerobic and anaerobic conditions
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Develop a model to illustrate the role of photosynthesis and cellular respiration in the cycling of carbon among the biosphere, atmosphere, hydrosphere, and geosphere
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Develop and use a model to illustrate the hierarchical organization of interacting systems that provide specific functions within multicellular organisms
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Factors that affect carrying capacity of ecosystems at different scales
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Feedback mechanisms maintain homeostasis
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Photosynthesis transforms light energy into stored chemical energy
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Use mathematical representations to support claims for the cycling of matter and flow of energy among organisms in an ecosystem
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Analyze geoscience data to make the claim that one change to Earth’s surface can create feedbacks that cause changes to other Earth systems
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Construct an explanation of the Big Bang theory based on astronomical evidence of light spectra, motion of distant galaxies, and composition of matter in the universe
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Develop a model based on evidence of Earth’s interior to describe the cycling of matter by thermal convection
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Develop a model based on evidence to illustrate the life span of the sun and the role of nuclear fusion in the sun’s core to release energy that eventually reaches Earth in the form of radiation
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Develop a model to illustrate how Earth’s internal and surface processes operate at different spatial and temporal scales to form continental and ocean-floor features
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Evaluate evidence of the past and current movements of continental and oceanic crust and the theory of plate tectonics to explain the ages of crustal rocks
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Motion of orbiting objects in the solar system
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Plan and conduct an investigation of the properties of water and its effects on Earth materials and surface processes
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Way stars, over their life cycle, produce elements
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Breaking it down into smaller, more manageable problems that can be solved through engineering
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Evaluate a solution to a complex real-world problem based on prioritized criteria and trade-offs that account for a range of constraints, including cost, safety, reliability, and aesthetics, as well as possible social, cultural, and environmental impacts
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Specify qualitative and quantitative criteria and constraints for solutions that account for societal needs and wants
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Use a computer simulation to model the impact of proposed solutions to a complex real-world problem with numerous criteria and constraints on interactions within and between systems relevant to the problem
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