University of Colorado
University of Colorado: Ph Et Interactive Simulations: Gravity and Orbits
An interactive simulation that teaches about gravitational force, circular motion, and astronomy by manipulating the sun, earth, moon, and a space station to observe the effects of gravity and orbital paths. This simulation can either be...
University of Colorado
University of Colorado: Ph Et Interactive Simulations: My Solar System
An interactive simulation that teaches about motion, acceleration, and velocity by allowing students to build their own solar system and watch the effects of gravitational pull and how that changes with initial position, velocity, and...
Georgia State University
Georgia State University: Hyper Physics: Earth Orbit Velocity
A discussion and statement of an equation for orbital speed. An interactive JavaScript form allows the user to investigate the relationship between orbital height and orbital speed. A very good opportunity to practice and receive...
Physics Aviary
Physics Aviary: Universal Gravity Lab
This lab was designed to allow students to collect data for the force between two objects in deep space. The students are transported by TARDIS to deep space and can use force probes to measure the pull between two objects. Students can...
University of Colorado
University of Colorado: Ph Et Interactive Simulations: Gravity and Orbits
Move the sun, earth, moon, and space station to see how it affects their gravitational forces and orbital paths. Visualize the sizes and distances between different heavenly bodies, and turn off gravity to see what would happen without it.
Georgia State University
Georgia State University: Hyper Physics: Elastic Potential Energy
This site from Georgia State University Physics Department defines elastic potential energy and explains its origin. Provides an equation for computing elastic potential energy and an opportunity to practice solving problems with an...
Physics Classroom
The Physics Classroom: Circular and Satellite Motion: Cavendish & Value of G
Students discover how the value of G in the universal gravitation constant was determined.
CK-12 Foundation
Ck 12: Plix: Gravity in the Solar System
[Free Registration/Login Required] Test your knowledge of Newton's Law of Universal Gravitation with an animation and a short quiz.
Science Education Resource Center at Carleton College
Serc: Using Microsoft Excel to Explore Gravity Forces and Accelerations
Students will learn about the force of gravity and the factors that affect it, and use and analyze the universal gravitation equation using Excel spreadsheets.
Physics Classroom
The Physics Classroom: Circular and Satellite Motion Table of Contents
Learners investigate planetary motion, satellite motion, universal gravitation, and circular motion. The tutorial consists of lessons, formulas, and problems to check for understanding.
Physics Classroom
The Physics Classroom: Circular and Satellite Motion: The Inverse Square Law
Through illustrated examples and interactive practice, students explore Newton's ability to relate the cause for heavenly motion (the orbit of the moon about the earth) to the cause for Earthly motion (the falling of an apple to the...
Physics Classroom
The Physics Classroom: Circular and Satellite Motion: The Value of G
In learning about the Law of Universal Gravitation, students explore the value of G, and understand why this value is so location dependent on Earth.
TED Talks
Ted: Ted Ed: What Are Gravitational Waves?
In September 2015, scientists witnessed something never seen before: two black holes colliding. Both about 30 times as big as our Sun, they had been orbiting each other for millions of years. A fraction of a second before the crash, they...
Space Telescope Science Institute
Nasa: Hubble Space Telescope: Universe
At this site from HubbleSite you can discover the universe by taking a look back toward the beginning of time. Site contains links to information on planets, stars, galaxies, and much more.
Physics Classroom
The Physics Classroom: Cavendish and the Value of G
A short description of how Cavendish measured the value of G - the universal gravitation constant and supported Newton's theory. Illustrated.
Sophia Learning
Sophia: Newton's Universal Law of Gravitation: Lesson 2
This lesson will describe Newton's Universal Law of Gravitation. It is 2 of 3 in the series titled "Newton's Universal Law of Gravitation."
Sophia Learning
Sophia: Newton's Universal Law of Gravitation: Lesson 1
This lesson will describe Newton's Universal Law of Gravitation. It is 1 of 3 in the series titled "Newton's Universal Law of Gravitation."
Georgia State University
Georgia State University: Hyper Physics: Special & General Relativity
This site from the Georgia State University provides an interesting chart form of the ideas of relativity. Column 1 - Idea, Column 2 - Experiment. Each item is linked to its own page of explanation, which is well done. A nice type of...
Boston University
Boston University: The Gravitational Field
Defines what a gravitational field is, its value, and how to calculate it. Field-line patterns are also drawn and explained.
Cornell University
Cornell University: Astronomy: Electromagnetism and Charge
This site from Cornell University provides a very short, very telling comparison of matter and charge. This is a good site to check out on the subject, with a chart diagram to help with further information.
Florida State University
Florida State University: Science, Optics & You: Sir Isaac Newton
Biography of Sir Isaac Newton (1642-1727), a scientist whose impact is felt in many disciplines today. His laws of motion are integral to basic physics, and he co-invented calculus.
University of Minnesota
University of Minnesota: Mechanics Problems: Force Problems
This University of Minnesota site provides a series of contextually rich, real-world problems demonstrating force and Newton's second law of motion.
University of St. Andrews (UK)
University of St. Andrews: General Relativity
A somewhat labored but thorough explanation of general relativity, beginning with Aristotle. Many links to the personalities connected to the article.
Curated OER
Georgia State University: Gravitational Potential Energy
This site from Georgia State University Physics Department defines and explains the concept of gravitational potential energy. Uses many equations and graphics to illustrate the idea. Provides an online computational practice set with...