Air is the sea of particles in which we live. Wrapped around us like a blanket, students sometimes mistake air as being without mass or weight. This easyweatherdemonstration proves to younger students that air does indeed have mass. In this quick experiment (it should only take about 15 minu...
Does air have weight? How to calculate momentum with mass and velocity? How does mass affect inertia? How much wind force does a jet engine produce? How do you distinguish between mass and momentum? Do air masses move from high to low pressure? How does mass affect gravitational force? How...
Local surface mass balance (SMB) measurements are crucial for understanding changes in the total mass of the Antarctic Ice Sheet, including its contribution to sea level rise. Despite continuous attempts to decipher mechanisms controlling the local and regional SMB, a clear understanding of the separa...
What causes an air mass to have high pressure? How are air masses classified? How does air pressure control the atmospheric circulation? How does air pressure affect weather/temperature? For example, do certain air pressure systems often go along with certain weather conditions and does air pressu...
You don't have to think about breathing because your body's autonomic nervous system controls it, as it does many other functions in your body. If you try to hold your breath, your body will override your action and force you to let out that breath and start breathing again. The respira...
The main canopy does not inflate. The main canopy gets tangled in the lines. Some of the lines break, or the canopy rips during opening. Part of the main canopy inflates while another part does not. In all of these cases, you have a canopy that you cannot use to land safely. You ...
How does it rise to a higher altitude or dive back toward the ground? First, let's consider the angle of attack, the angle that a wing (or airfoil) presents to oncoming air. The greater the angle of attack, the greater the lift. The smaller the angle, the less lift. Interestingly ...
(such as air) move from areas of HIGH pressure to areas of LOW pressure Air pressure is different in different places on Earth because the Sun does not heat the Earth evenly Because air pressure is different in different places on Earth, air is constantly moving from one place to another,...
When there is no air resistance, objects of different masses do what? If free-fall acceleration = velocity/time, why does the velocity increase as time increases? Give a detailed scientific explanation. What would decrease the stability of an air mass? How does a parachute reduce terminal veloc...
the airline and whether it is an airline that has taken more measures to reduce emissions, or not. Aircraft type is also not being taken into account, yet we know that one aircraft can be massively more efficient than another. But how much visibility does the traveller really have of that...