Is rock a fossil? Fossils are the preserved remains, or traces of remains, of ancient organisms. Fossils are not the remains of the organism itself! They are rocks. Bones, shells, feathers, and leaves can all become fossils. Who is the most famous paleontologist in the world? Jack Horner Do you need a PhD to be […]
What was Democritus wrong about?
What was Democritus wrong about? 2,500 years ago, Democritus suggested that all matter in the universe was made up of tiny, indivisible, solid objects he called “atomos.” However, other Greek philosophers disliked Democritus’ “atomos” theory because they felt it was illogical. Atoms cannot be subdivided, created, or destroyed. Are we made of atoms? About 99 […]
What does the UN logo stand for?
Will wind ever stop blowing?
Will wind ever stop blowing? Wind is the atmosphere trying to reach a pressure equilibrium. If the pressure is equalized, there will be no more wind. Which is rare on our planet as different areas are always heating and cooling. Hotter air is lower pressure and cooler air is higher pressure. Where on earth is […]
What is the most common geological feature seen on moons?
What is the most common geological feature seen on moons? Craters are the most common surface features on many solid planets and moons—Mercury and our Moon are covered with craters. This portion of the Moon is covered by numerous circular holes. These are impact craters, each of which was formed when an asteroid or comet […]
Can scientists predict earthquake?
Can scientists predict earthquake? While part of the scientific community hold that, taking into account non-seismic precursors and given enough resources to study them extensively, prediction might be possible, most scientists are pessimistic and some maintain that earthquake prediction is inherently impossible. Can earthquakes be predicted 2020? No. Neither the USGS nor any other scientists […]
Why does the queen hold her wrist?
Why does the queen hold her wrist? You may have noticed that the Queen often clasps her hands together at events but it’s not to avoid awkward handshakes. Instead, the pose is intended to show that she is not threatening. “The Queen’s signature pose is the handclasp. This is a demure defence posture and it […]
What happens when two magnets are placed side by side?
What happens when two magnets are placed side by side? Opposite poles of a magnet attract each other, whereas like poles repel each other. However, when lined up with another north-seeking pole, the two magnets would push away from each other because their forces are not compatible. Is Venus a permanent magnet? Venus is a […]
What is scalar product explain?
What is scalar product explain? “Scalar products can be found by taking the component of one vector in the direction of the other vector and multiplying it with the magnitude of the other vector”. It can be defined as: Scalar product or dot product is an algebraic operation that takes two equal-length sequences of numbers […]
Who found solar energy?
Who found solar energy? A solar cell is a device that converts light directly into electricity using the photoelectric effect. The first solar cell was constructed by Charles Fritts in the 1880s. How do we convert solar energy into electricity? When light energy from the sun strikes a photovoltaic solar cell, it energizes the cell […]