This YouTube video explores both passive and active solar energy.
In the first URL, the YouTube video explains why earth has spring, summer, autumn and winter seasons. The second URL summarizes the key takeaway points.
This short YouTube video introduces you to the planets which make up the solar system.
This YouTube video investigates the structure and composition of the sun.
An exploration of how the area under a force vs. position graph equals the work done by the force and solves some sample problems.
An exploration through some example problems on the concept of work.
Speed necessary for the space station to stay in orbit.
What is the acceleration due to gravity at the space station.
Why do astronauts appear weightless despite being near the Earth?
What would fall faster on the moon, a brick or a feather?