Let's do the Twist Trivia Quiz

Answer: Same

Mass is the amount of matter contained by the body, so mass is not affected by gravity. If a body mass is 100 kg on Earth, it will have the same mass on the moon even though gravity on the moon is much less than on Earth.

Answer: Displacement

Scalar quantities are those quantities which have magnitude but have no direction. Displacement is a vector quantity. Displacement is not only how much a body is moved from a specific point but also in which direction it has been moved. So if a body travels from a point to another point and returns back to same point, its total displacement is zero. Speed also only needs magnitude and if we add direction to it, it will become velocity. Energy is also scalar as it has no direction.

Answer: Three hundred thousand kilometres per second

Light is an electromagnetic wave that travels with the speed of three hundred thousand kilometres per second in a vacuum. The speed of light in any medium depends on the densities of various objects. The denser the object, the slower the speed of light in that medium. So light will travel faster in air than in water as water is denser than air.

Answer: 5

Solar eclipses happen when the moon comes in between the Earth and the Sun, with the moon casting its shadow onto the Earth. The number of solar eclipses in an year can range from two to five.

Answer: True

At sea level water boils at 100 degrees Celsius or 212 degrees Fahrenheit. As the height increases, the boiling point of water decreases due to the decrease in atmospheric pressure. So water will boil faster in mountainous areas.

Answer: Energy

This energy is equal to 1.6 * 10^(-19) joules. This is a very small unit of energy and is usually used for measuring the energy of subatomic particles or energy gaps in between conducting and valance bands in semiconductors.

Answer: Ultraviolet

The electromagnetic waves, in increasing order of their frequencies, are radio waves, microwaves, infrared, visible light, ultraviolet, x-rays and gamma rays. The frequency of visible light is between 4 * 10^14 hertz to 7 * 10^14 hertz. The frequency of ultraviolet light is in between 8 * 10^14 hertz to 3 * 10^16 hertz frequency range. Ultraviolet light is used for sterilization of medical equipment and killing bacteria in water.

Answer: Total internal reflection

When light moves from a denser medium to a rarer medium, it bends away from its original straight path. The denser the object, the more the light will bend in a rarer medium. There is a point which, if light bends more, it will be refracted in the same medium from which it came, which will look like a reflection.

This phenomenon is called total internal reflection. Optical fibres work on this principle.

Answer: Lithium

Paramagnetic materials are those which became magnetized in a magnetic field but lose their magnetism when the external magnetic field is removed. Lithium is the paramagnetic material in the options listed. All the other elements are diamagnetic in nature. Diamagnetic materials are those which are repelled by an external magnetic field.

Answer: False

A neutron is slightly heavier than a proton. The mass of a neutron is 1.008664u while the mass of a proton is 1.007276u. U here denotes the atomic mass unit which is equal to 1.660540 * 10^-27Kg. A neutron is a particle with no charge while a proton is positively charged.