Wikimedia
Wikipedia: The Black Hole
This site examines the black hole as an object in astrophysics. Delve into this comprehensive resource that covers this concept from its history, to qualitative physics, the reality of black holes, mathematical physics and more.
Wikimedia
Wikipedia: Gravitropism (Geotropism)
Gravitropism (or geotropism) is how a plant responds to gravity. Roots have a positive reaction to gravity and they grow toward it. Stems have a negative reaction and grow away from gravity. Learn more about what happens inside a plant...
Wikimedia
Wikipedia: Centripetal Force
Wikipedia's site on centripetal force provides a section explaining the difference between centripetal force and centrifugal force. Includes formulas and hyperlinked terms.
Wikimedia
Wikipedia: Centrifuge
Wikipedia provides detailed information and history on centrifuges in scientific research and industry, including its importance in making nuclear weapons.
Project Britain
Primary Homework Help: Forces Quiz
First, read some fast facts about forces, then take a ten-question, multiple-choice quiz. Check to see if your answers are correct after each question.
PBS
Pbs Kids: Dragonfly Tv: Do It: Balancing Act
An experiment kids can do at home to discover how the center of gravity can affect whether things will balance or not.
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Sliding Down an Incline Plane
Here is a simulation demonstrating an object placed on an inclined plane. The user will vary the slope of the plane to see the relationship the slope has on the gravity of the object and the static friction.
TED Talks
Ted: Ted Ed: The Fundamentals of Space Time: Part 3
In this third and final lesson, CERN scientists Andrew Pontzen and Tom Whyntie explore what gravity means for space-time- or rather, what space-time means for gravity. [3:27]
TED Talks
Ted: Ted Ed: Free Falling in Outer Space
With a little help from Sir Isaac Newton, Matt J. Carlson explains the basic forces acting on an astronaut during a free fall. [2:59]
TED Talks
Ted: Ted Ed: Gravity and the Human Body
Our bodies function necessarily under the presence of gravity; how blood pumps, a sense of balance and bone growth are all due to life in a world where gravity is an inescapable reality. Armed with experiments from neuroscientists David...
TED Talks
Ted: Ted Ed: Einstein's Theory of General Relativity
How are spacetime, dark matter and gravity related? In celebration of the centennial of Einstein's theory of general relativity, this video breaks it down. [3:04]
Open Curriculum
Open Curriculum: Gravity
This article helps students understand and apply the concept of gravity and Newton's Laws.
Open Curriculum
Open Curriculum: The Nonmechanical Universe
Students learn about the fields of force and gravity in this illustrated article.
PBS
Pbs: Watch the Elegant Universe
This 3 hour minseries on String Theory is divided up into 24 sections. Each is accompanied by a brief explanation and only lasts about 7 minutes. This series is perfect for any one looking to get a better grasp on this thrilling concept.
Woods Hole Oceanographic Institution
Whoi: What Causes Tides?
The Woods Hole Oceanographic Institute provides an in-depth but easy to read article on the role of the moon and the sun in respect to tides.
Other
Easyphysics: Chapter 5 Motion in Two Dimensions
Learners investigate motion in two dimensions. Some topics examined are two dimensional forces, gravity, and forces in three directions. The resource includes example problems with solutions and a chapter quiz.
Other
Uc Riverside: Usenet Relativity Faq
A physics usenet listing of frequently asked questions relating to relativity, answered by a number of scientists. Administrivia and Reference, Speed of Light, Special Relativity, General Relativity and Cosmology, Black Holes. Loads of...
Other
Einstein Archives Online
Online access to portions of Einstein's original papers and manuscripts.
Lawrence Berkeley National Laboratory
Berkeley Lab: La Aventura De Las Particulas
Learn the fundamentals of particles and forces with this site. Explore the paths that explain matter in the universe.
Other
Wikibooks: Physics Study Guide
A handy resource that gives an overview of equations and definitions pertinent to an introductory, college-level physics course, with two of its three sections focusing on motion-related topics and principles.
Other
A Magic Classroom: Nail Balance Puzzle [Pdf]
In this lesson, students try to balance fourteen nails on the head of one nail by outwitting gravity.
Scholastic
Scholastic: Study Jams! Science: Our Solar System: Gravity & Inertia
A video and a short multiple-choice quiz on the topic of gravity and inertia, and how they work together to keep objects from floating off into space.
Concord Consortium
The Concord Consortium: Molecular Workbench: Freefall 3 D
Change variables to see how an object reacts to freefall in a 3D environment.
Other
Montana State University: How Much Would You Weigh on Distant Planets?
This resource contains a lesson plan in which students study the effects of gravity on the planets of the Solar System. They will view movies from the lunar Apollo missions, calculate their own weight on other planets, and propose what...