Science Questions (Easy Round)

The correct answer is because those countries are in the PACIFIC RING OF FIRE. The Pacific Ring of Fire is an area in the Pacific Ocean where a large number of earthquakes and volcanic eruptions occur. It is caused by the movement and interaction of several tectonic plates, resulting in intense volcanic activity. The countries mentioned in the question, such as the Philippines, Indonesia, and Japan, are located within this region, which explains the occurrence of volcanic eruptions in these countries.

Magnitude is a measure of the size or strength of an earthquake. It quantifies the amount of energy released by the earthquake at its source. The magnitude is determined using seismographic data, which measures the amplitude of seismic waves generated by the earthquake. The larger the magnitude, the more energy is released and the stronger the earthquake. Intensity, on the other hand, is a measure of the effects of an earthquake at a particular location, such as damage to buildings or the ground shaking felt by people.

Uranium is the correct answer because it is the radioactive element that is extracted from pitchblende. Pitchblende is a mineral that contains a high concentration of uranium, making it the primary source for extracting this radioactive element. Uranium is widely used as a fuel in nuclear power plants and for the production of nuclear weapons.

Metals are the best conductors among the given options. This is because metals have a high number of free electrons that are able to move freely through the material, allowing for efficient transfer of heat or electricity. In contrast, non-metals and metalloids have fewer free electrons, making them poorer conductors. Copper, specifically, is an excellent conductor due to its high electrical conductivity and low resistance.

The correct arrangement of gases according to their abundancy is nitrogen, oxygen, carbon dioxide. This is because nitrogen makes up about 78% of the Earth's atmosphere, oxygen makes up about 21%, and carbon dioxide is present in much smaller quantities, typically less than 1% of the atmosphere.

Vinegar is an acidic substance that can corrode metal containers over time. Therefore, it is recommended to store vinegar in a plastic container to prevent corrosion and ensure its longevity.

A fried fish contains chemical energy. When the fish is fried, the chemical bonds in the molecules of the fish's proteins, fats, and carbohydrates are broken down through a chemical reaction, releasing energy in the form of heat. This energy is stored in the food as chemical energy, which can be converted and used by our bodies when we consume the fried fish.

Quasars are much smaller than most galaxies but are very much brighter. Quasars are extremely luminous and compact regions at the centers of galaxies, powered by supermassive black holes. They emit huge amounts of energy and are among the most energetic objects in the universe. This makes them appear much brighter compared to galaxies, which are much larger and contain billions of stars.

The kinetic energy of a bullet can be calculated using the formula KE = 1/2mv^2, where m is the mass of the bullet and v is its velocity. In this case, the mass of the bullet is given as 90g and the velocity is given as 200 s/m. Plugging these values into the formula, we get KE = 1/2 * 90g * (200 s/m)^2 = 1,800,000 g s/m.

The Mohorovicic discontinuity is the correct answer because it is the layer of the Earth that separates the crust from the mantle. This boundary is characterized by a change in seismic wave velocities, indicating a transition between different rock types. It was named after the Croatian seismologist Andrija Mohorovicic, who first discovered and studied this boundary in 1909.