We were talking about gravity today in class and how it's a force that pulls together any two objects that have mass.
Some students brought up the connection of bubbles of balloons floating - they are still affected by gravity, it's just that the substance inside them (helium, for example) is less dense than air and will, therefore, allow the container that houses the gases to float.
The discussion on gravity reminded me of a few videos I've seen in the past which I enjoyed and did an excellent job at explaining the concept of gravity and how it is relative to different objects, including our planet.
Some students brought up the connection of bubbles of balloons floating - they are still affected by gravity, it's just that the substance inside them (helium, for example) is less dense than air and will, therefore, allow the container that houses the gases to float.
The discussion on gravity reminded me of a few videos I've seen in the past which I enjoyed and did an excellent job at explaining the concept of gravity and how it is relative to different objects, including our planet.
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