Assuming mass does not also increase, then density decreases if volume increases. For example, let's say Mass= 100 and Volume= 50 Density would = 2 Now, lets increase the voluâ¦me. Mass would still = 100, and let's increase the volume to 75. Density would then equal 1.333... 2 is greater than 1.333....
Definition of wind tunnel. : a tunnellike passage through which air is blown at a known velocity to investigate air flow around an object (such as an airplane part or model) placed in the passage.
A beautiful and compelling piece, the Wind Tunnel is an engaging tool for learning about one of Mother Nature's most interesting forces! Its unique design lets adults pivot the tube vertically, horizontally, or on an angle - perfect for comparing the results of wind and its relationship with direction. Children of all ages love it!