Human Anatomy
Located in the lungs, these tiny sacs are surrounded by capillaries and are the primary structure where oxygen diffuses into the blood and carbon dioxide diffuses out.
Alveoli
This distance measurement, defined as how far a beam of light travels in one Julian year, is commonly used by astronomers to measure vast gaps between stars.
Light Year
Finish the phrase! Every action has…
…an equal and opposite reaction.
The atomic number of Carbon.
6
Neil deGrasse Tyson
In the human digestive system, this muscular valve sits at the junction between the stomach and the duodenum, regulating the passage of partially digested food (chymus) into the small intestine.
pyloric sphincter
When Earth passes directly between the Sun and the Moon, casting Earth's shadow over the Moon, this type of astronomical event occurs.
Lunar Eclipse
Yuvraj is initially at rest. He starts running due East at 300 metres per minute for 4 minutes and then walks another 500 metres due North. What is his displacement from his starting position?
1300m N/E
The number of electrons HCl has.
18
Richard Feynman
Secreted by the parietal cells of the stomach lining, this compound converts inactive pepsinogen into the active protein-digesting enzyme pepsin while maintaining a low gastric pH.
HCl
This terrestrial planet, known as the "Red Planet," is home to Olympus Mons, the largest volcano in the solar system.
Mars
Represent the unit Newton in SI base units. The SI base units are Meter, Kilogram, Second, Ampere, Kelvin, Mole, Candela. (Hint: use F = ma).
(Kg m)/( s^2)
A 10% concentration of saline solution is diluted with 100 ml of water, resulting in a 5% concentration solution. Determine how many grams of salt were dissolved in the original solution.
10 g
In the nephron, this loop extends down into the renal medulla to establish a concentration gradient, allowing for the reabsorption of water and sodium chloride.
Loop of Henle
Proposed by Georges Lemaître and supported by Edwin Hubble's observations of redshift, this scientific theory describes how the universe expanded from an extremely hot, dense point approximately 13.8 billion years ago.
Big Bang Theory
Gunit and Guneet both decide to go to the moon and drop rocks down from a cliff. Gunit’s rock weighs 0.5 kg and Guneet’s rock weighs 2.5 kg. Assuming they both drop the rock from the same height, and the surface below them is leveled, whose rock will hit the ground first?
Both rocks will hit the ground at the same time.
Let A be the concentration of H+ ions in a given solution in mol/L. Write the pH of the solution in terms of A.
-log10(A)
Katherine Johnson
During the cardiac cycle, this specific phase occurs when both the semilunar valves snap shut due to backpressure in the aorta and pulmonary artery, while all four heart chambers remain briefly closed and relaxed at a constant volume before the AV valves open.
Isovolumetric Relaxation
When a massive star runs out of nuclear fuel, its core collapses and triggers a colossal stellar explosion that leaves behind a neutron star or a black hole.
Supernova
Armaan and Shezeen are standing diametrically opposite to each other on a 100m circular track. They both start running in opposite directions at constant speeds, and Shezeen runs 4 times faster than Armaan. After 10 minutes, they find themselves diametrically opposite to each other and realizing that they passed each other 5 times while running. How much more did Shezeen run than Armaan? Answer in metres.
300 m
List the 4 axioms that Ideal gases obey.
Particles have negligible volume, no intermolecular forces, particles move randomly, all collisions are elastic.
Galileo Galilei