Physics Trivia Quiz

Answer: 60 kg

Mass depends on the amount of matter in a body. Weight is dependent on gravity. Mass does not change on the Moon as it is not dependent on local gravity. The gravity on the Moon is 1/6 of the gravity on Earth.

Answer: 88 days

As Mercury is the closest planet to the sun it has the least period of revolution, 88 Earth days. The period of revolution goes on increasing as the distance between the sun and the planet goes on increasing. For example, the period of revolution of Neptune is 165 Earth years.

Answer: carbon

We most often come across graphite in everyday life in pencils. Graphite can leave marks on paper and its name comes from this. In Ancient Greek, graphein means to write or draw. Graphite is also found in batteries and brake linings among many other uses.

Answer: 20 N

Weight is dependent on gravity. The gravity on the Moon is 1/6 of the gravity on Earth. The gravity on the Moon is less than that on Earth because the Moon is smaller in size as compared to Earth. One sixth of 120 N is 20 N.

Answer: it will float

A substance with lower density floats on a substance with higher density. The density of an egg is greater than the density of water. Therefore the egg sinks. But when we add salt to the water the density of water increases, and hence the egg floats on water.

Answer: Alfred Nobel

Alfred Nobel invented dynamite in 1886. Nobel felt so bad that his invention was used for such destructive purposes and methods and made people have such a negative impression of him, that he decided that after his death, he would leave a much better legacy than during his life. So, he set up an award system, now called the Nobel Prize, so that when people do things that are extraordinarily beneficial to humans or who perform great actions to save the human race and the world, that the most outstanding person in each area would be awarded the prize.

The prizes are awarded every December 10th, in Stockholm (except for the Peace Prize, which is awarded in Norway), commemorating when Nobel died and where he was born. Nobel died December 10, 1896 at the age of 63.

Answer: 0 -- there is no sound in vacuum

Sound needs a medium to travel. Since there is no medium in the vacuum the sound cannot propagate and the speed of sound remains 0 m/s in vacuum. The speed of sound is greatest in a solid medium.

Answer: Max Planck

Albert Einstein discovered the theory of relativity. James Chadwick discovered neutrons. Otto Hahn discovered that barium could be produced by bombarding uranium with neutrons.

Answer: 5

In a solar eclipse, the Moon comes between the Earth and the Sun. Actually, the number of solar eclipses in a single year can range from two to five.

Answer: Energy

A scalar quantity has no direction but does have magnitude. A vector quantity has both magnitude and direction. Acceleration, displacement and weight need directions, thus they are vector quantities.