Science & Mathematics Questions & Answers

A large number of people count snakes and spiders among their fears. Now, a new study claims to have unlocked the psychology of the common phobias. Researchers have found that contrary to assumptions that humans possess an evolutionary predisposition to fear the creepy creatures, it is the exposure to negative information about snakes and spiders, which causes phobias. “Previous research …

We should wash our hands before meals as a protection against infections. We live in a world full of germs (micro-organisms or microbes) and those, which are dangerous to us, prefer to live and multiply in organic material. So it is wise to remove as many as possible before coming into contact with food, which provides an ideal breeding ground. …

Scientists may have an explanation for why men may be better drivers than women, and why women have better attention span and memory. A new brain connectivity study from the US published on Tuesday in the peer-reviewed Proceedings of National Academy of Sciences journal found remarkable differences in the neural wiring of men and women that could give evidence for …

A yawn is a very deep breath and the usual cause of it is that we are tired and our breathing has fallen below what it needed, so we are trying to make it up quickly. The yawn that comes when we see someone else yawning though is due to what is called suggestion. One example of suggestion is when …

Yews have long been associated with religious worship. So it is likely that churches were originally built near the sacred trees rather than the other way round. These trees live longer than any other species in Europe and can grow to an enormous size. Many are thought to be well over 1,000 years old. Yews were revered by the druids …

Long ago, no score was indicated on French tennis scorecards by an egg-shaped zero. This was unknown as “L’oeuf’, the French word for egg, and the English-speaking players used the name word, but in this case it sounded like love, and has been called love ever since.

The Earth takes one year to circle around the Sun. But the Earth is titled, so that at different times of year some parts receive more sunlight than others. These changes give us the season. On the equator, is no great change in the seasons.

You could say because they are both spacecraft. However, the right answer is that they are both made of ceramics. Saucers are made of ceramic material called porcelain, and the space shuttle is covered with ceramic tiles that resist the intense heat of re-entry into the Earth’s atmosphere. Ceramics are materials like pottery. They are made of substances such as …

The flame of a candle is produced when the wax of the candle melts due to heat and the molten wax rises in the wick. It gets vapourised at its tip, and the vapour starts burning. The chemical reactions that occur are quite complex, giving rise to various colours and different zones of the flame. As the heated gas rises …

Generally, volume in litres is associated with liquid measurements. Space inside a car is a not a perfect cube or an easily calculable shape. Volumes are not always easy to measure for irregular solid objects or spaces. We can use litres and cubic centimetres, or even cubic metres for measuring solid objects, or space that something might fit into, for …