What helps breathing at high altitudes? Once you’ve mastered the belly breath, you can add resistance to your exhalation by pursing your lips and exhaling forcefully, and this is what mountaineers call the Pressure Breath. This is one of the most important breaths for climbing at high altitudes and helps combat the decrease in atmospheric […]
Which is the biggest dwarf planet?
Which is the biggest dwarf planet? Eris Why is Pluto not part of our solar system? The International Astronomical Union (IAU) downgraded the status of Pluto to that of a dwarf planet because it did not meet the three criteria the IAU uses to define a full-sized planet. Essentially Pluto meets all the criteria except […]
What three things can happen when light strikes an object?
What three things can happen when light strikes an object? The Sun casts its longest shadow when it first appears and before it disappears. When light waves hit substances, three things can happen: Light can be refracted, absorbed, or reflected. Reflection occurs when light strikes a surface and bounces off. What is apparent color? ‘Apparent […]
What happens to a wave when it passes through an opening in a barrier?
What happens to a wave when it passes through an opening in a barrier? When a wave moves around a barrier or through an opening in a barrier, it bends and spreads out. These wave interactions are called diffraction. Interference is the interaction between waves that meet. What are 2 ways waves can bounce off […]
Why do wires get hot resistance?
Why do wires get hot resistance? Heating a metal conductor makes it more difficult for electricity to flow through it. These collisions cause resistance and generate heat. Heating the metal conductor causes atoms to vibrate more, which in turn makes it more difficult for the electrons to flow, increasing resistance. What causes low resistance in […]
What do you mean by renal pelvis?
What do you mean by renal pelvis? Listen to pronunciation. (REE-nul PEL-vus) The area at the center of the kidney. Urine collects here and is funneled into the ureter, the tube that connects the kidney to the bladder. What is the main function of the renal pelvis? The kidney pelvis acts like a funnel, collecting […]
Why oil and water does not mix?
Where do avalanches occur most often?
Where do avalanches occur most often? What Country Gets the Most Avalanches? Internationally, the Alpine countries of France, Austria, Switzerland, and Italy experience the greatest number of avalanches and loss of life annually. The United States ranks fifth worldwide in avalanche danger. The states of Colorado, Alaska, and Utah are the most deadly. What are […]
What is the missing side length in this right triangle?
Is bread reversible or irreversible?
Is bread reversible or irreversible? Matthew Johnson, Math major and autodidact. Unless you consider ‘toast’ bread that was simply warmed and not toasted (which I call ‘raw toast’), then clearly it is irreversible. You have by toasting changed the chemistry in an irreversible way. Heat making chemical changes is not “infinitely close to equilibrium”. Is […]