#757 What is price elasticity of demand?
What is price elasticity of demand? It is a measure of how much demand for a product changes depending on its price. An object’s elasticity is how much it can…
What is price elasticity of demand? It is a measure of how much demand for a product changes depending on its price. An object’s elasticity is how much it can…
How do flies perceive time? Flies see the world in slow motion, possibly seeing things four times slower than we do. We have probably all tried to swat a fly…
What causes turbulence? It happens when an airplane flies through turbulent air (hence the word turbulence) and gets buffeted around. Turbulence can cause a plane to suddenly rise or fall…
What is the difference between a herb and a spice? Herbs are the fresh part of the plant and spices are the dried root, stalk, seed, or fruit. Herbs and…
Are lighthouses still necessary? Yes, they are because technology can fail, and some things don’t show up on maps or with sonar. The Lighthouse Directory lists 24,300 lighthouses on its…
How does a Maglev train work? They use magnets to move the train forwards and to reduce friction. Maglev is the shortened form of magnetic levitation, and it is a…
What vegetables came from the New World? There are many, but potatoes, tomatoes, corn, beans, squash, chili, cacao, peppers, and vanilla are good examples. The foods that came from the…
What is flash memory? It is a type of memory that can store data without power and can erase memory in blocks. It is a type of electronically erasable programmable…
Did Christopher Columbus really think he had landed in India? Not India, but the Indies, and, yes, he did. When Columbus said he was aiming for the Indies, he wasn’t…
Why does it rain in a rainforest? Tropical rainforests cause rain when water is released by the trees, but temperate rainforests form where there is a lot of natural rain.…