In the following lesson for grades 6-8, students learn about environments with gravity and those with reduced gravity by observing the behavior of a water-filled plastic bag, both inside and outside of a container of water.

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.

Video describes what gravity is and how it operates between two masses. Followed by a short quiz and a list of additional resources to explore. [4:44]

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...

In this learning module students can get a better understanding of how gravity affects our solar system.

Explanation of how astronomers and scientist developed the current theories of gravity.

Students use water balloons and a length of string to understand how gravity and the velocity of a spacecraft balance to form an orbit. They see that when the velocity becomes too great for gravity to hold onto an object, the object...

[Free Registration/Login may be required to access all resource tools.] In this module, students will explore the concept of gravity, and be able to use it to perform calculations using constant acceleration.

Physiclips thoroughly presents the concepts of gravity with animations and film clips.

This mini lab was designed to visually illustrate the relationships between the force of gravity and the factors that determine its strength.

Third graders will observe and analyze the forces of gravity.

Second graders will observe how gravity affects themselves and other objects.

Specific gravity is defined and explained. Practice problems are given and solved. Illustrations included as well.

Manipulate the mass and distance of two objects to see how these properties change the gravity force.

This is a table listing the specific gravities of various metals, ceramics, and minerals. Very complete listing and a good resource.

This program simulates a particle falling due to gravity. Try changing the initial settings. What do you think will happen if you... Increase gravity? Change the mass of the particle? Make the time step negative?

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...

[Free Registration/Login may be required to access all resource tools.] Understand the role of gravity in space.

Understand the role of gravity in the solar system. [Free Registration/Login may be required to access all resource tools.]

[Free Registration/Login may be required to access all resource tools.] Acceleration due to gravity and why falling objects with different masses accelerate at the same rate.

Next, let's apply all these ideas to the case where a particle is being acted on by both gravity and air resistance using this 5-question quiz/practice. The gravity force vector points downward, and the air resistance force opposes it.

Understand gravity using this study guide.

[Free Registration/Login may be required to access all resource tools.] Newton's law of universal gravitation and factors that affect the strength of gravity between two objects.

What is known about gravity? Find out Einstein's thoughts on gravity in a brief overview of this mysterious force.