Public learning track
Work, Power, Energy, and Oscillations
7th Grade · Science · Open Global Science
9 lessons
Goal
Calculate mechanical work, power, kinetic and potential energy, simple machine efficiency, and simple harmonic oscillations.
Featured Diagrams
Calculating Mechanical Work and Power
9 lessons
0 of 9 done
- 1Calculating Mechanical Work and PowerUp nextStart
- 2Potential and Kinetic Energy in Mechanical, Thermal, Electrical, and Biological SystemsPremiumNot started yet
- 3Conservation of Mechanical EnergyNot started yet
- 4Inclined Planes: Reducing Effort Force Over DistanceNot started yet
- 5Mechanical Efficiency and Energy Losses in Simple MachinesNot started yet
- 6Hooke's Law and Spring ElasticityNot started yet
- 7Elastic Potential Energy in Deformed SolidsNot started yet
- 8Simple Harmonic Motion and Pendulum DynamicsNot started yet
- 9Damping, Forced Vibrations, and Mechanical ResonanceNot started yet
Standards Covered
- OGS.8.PS.10Open Global Science Standards 2026™ · Science · Level 8 / Grade 7 (Age 12) · Grade 7Calculate mechanical work, power, kinetic energy, and potential energy, and apply the law of conservation of mechanical energy and mechanical efficiency to simple machines and inclined planes.
- OGS.8.PS.13Open Global Science Standards 2026™ · Science · Level 8 / Grade 7 (Age 12) · Grade 7Analyze simple harmonic motion, Hooke's law, elastic potential energy, forced vibrations, damping, and mechanical resonance through experimental and mathematical investigations.
Curriculum Framework
7th Grade · Science · Open Global Science
1
8 lessons
Matter, Density, and Kinetic-Molecular Theory
Explain states of matter, thermal expansion, diffusion, and Brownian motion using particle models, and calculate mass, volume, and density.
2
7 lessons
Pure Substances, Mixtures, and the Periodic Table
Classify matter into elements, compounds, and mixtures, use chemical formulas, and apply periodic trends to predict reactivity.
3
6 lessons
Inorganic Compounds, Acids, Bases, and Salts
Analyze inorganic classes, electrolytic dissociation, pH balance, and neutralization reactions.
4
7 lessons
Kinematics: One- and Two-Dimensional Motion
Analyze motion using scalar and vector quantities, calculate velocity and acceleration, and interpret kinematic graphs.
5
8 lessons
Dynamics, Newton's Laws, and Friction
Apply Newton's three laws of motion, momentum conservation, and friction models to describe object dynamics.
6
7 lessons
Rotational Motion and Fluid Mechanics
Model circular motion dynamics, hydrostatic pressure, communicating vessels, and Archimedes' principle.
7
9 lessons
Work, Power, Energy, and Oscillations
Calculate mechanical work, power, kinetic and potential energy, simple machine efficiency, and simple harmonic oscillations.
8
8 lessons
Thermal Physics and Thermodynamics
Investigate conduction, convection, radiation, specific heat, latent heat, and thermodynamic laws.
9
10 lessons
Electrostatics and Direct-Current Circuits
Analyze electric charges, fields, potentials, and construct DC circuits using Ohm's, Joule's, and Kirchhoff's laws.
10
7 lessons
Electromagnetism, Induction, and AC Systems
Investigate magnetic fields, electromagnetic induction, motors, transformers, relays, and alternating current.
11
7 lessons
Wave Phenomena and Geometric Optics
Model wave behaviors including interference, diffraction, Doppler effect, reflection, refraction, and optical technologies.
12
11 lessons
Quantum Phenomena and Nuclear Physics
Analyze wave-particle duality, atomic emission/absorption spectra, radioactive decay, nuclear reactions, and mass-energy equivalence.