Part of GED® Science: Physical Science
GED® Science: Work, Power & Simple Machines (Deep Dive)
A focused companion course on scientific work, power, mechanical advantage, simple machines, ramps, levers, pulleys, efficiency, and GED®-style formula/data questions.
📚 Course Curriculum
In science, work happens only when a force moves an object a distance in the direction of the force:. Work is measured in joules (J). …
Open trial session →Power measures the rate of doing work:. Power is measured in watts (W). Two people can do the same work lifting boxes, but the person …
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A simple machine makes work easier by changing the size or direction of a force. The six classic machines are lever, pulley, wheel and axle, …
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A ramp or inclined plane lets you lift an object using less force over a longer distance. A lever rotates around a fulcrum. A pulley …
Open trial session →Real machines lose some input energy to friction and heat, so useful output work is less than input work. Efficiency is:. Reading machine data (GED® …
Open trial session →Course Syllabus
This self-paced GED® Science course follows a 5-lesson sequence. Work through the modules in order so that each skill supports the next.
Course sequence
Module 1 - Lessons 1-3
- Scientific Work
- Power: How Fast Work Gets Done
- Simple Machines and Mechanical Advantage
Module 2 - Lessons 4-5
- Ramps, Levers and Pulleys
- Efficiency and Machine Data
Practice and completion
- Use worked examples and lesson practice to check understanding after each module.
- Review incorrect answers, explain the correction, and repeat weak skills.
- Complete the available mixed or final course practice to demonstrate readiness.
Course Outcomes
By the end of this course, learners will be able to:
- Explain the key scientific ideas and vocabulary in Scientific Work.
- Interpret observations, data, models, or evidence related to Power: How Fast Work Gets Done.
- Apply scientific reasoning to questions involving Simple Machines and Mechanical Advantage.
- Evaluate explanations and identify common errors about Ramps, Levers and Pulleys.
- Connect Efficiency and Machine Data with other course concepts in mixed practice.
- Use feedback and answer explanations to diagnose and correct mistakes.
- Complete mixed, exam-style practice with clearer reasoning and greater independence.
📝 Practice Questions
10 interactive questions with instant feedback and explanations.
Enroll for free to unlock the full practice bank after the trial sessions.