Treehut
Suzy's World: Black Holes
Use this site to find out what is a black hole in space and try an experiment.
Concord Consortium
The Concord Consortium: Molecular Workbench: Rolling Down an Inclined Plane
Experiment with gravity as a variable to observe the effects of gravity on an object rolling down an inclined surface.
Sophia Learning
Sophia: Weight: Lesson 1
This lesson introduces the concept of weight. It is 1 of 7 in the series titled "Weight."
NASA
Nasa Star Child: Planet Hop
Figure out your age and your weight on all the planets in the solar system using the formulas given here. Then type them into the correct place, and let the computer check to see if you are correct.
Science4Fun
Science4 Fun: Mass and Weight
What is mass? What is weight? Illustrated discussion of mass and weight including how they are measured.
Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: Potential Energy: How Is It Related to Kinetic Energy
After creating three different ramps with various heights, young scholars will release toy cars from the tops of each ramp. Based on the elementary age level, students will collect data and analyze it.