Every Day Science MCQs with Explanations

Explanation

Albert Einstein (14 March 1879 – 18 April 1955) was a German-born theoretical physicist who developed the theory of relativity, one of the two pillars of modern physics (alongside quantum mechanics). His work is also known for its influence on the philosophy of science. He is best known to the general public for his mass–energy equivalence formula E = mc^2, which has been dubbed “the world’s most famous equation”. He received the 1921 Nobel Prize in Physics “for his services to theoretical physics, and especially for his discovery of the law of the photoelectric effect”, a pivotal step in the development of quantum theory.

Explanation

Concave is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

Explanation

FM is short for frequency modulation, which refers to the means of encoding the audio signal on the carrier frequency. FM full power, low power, translator and booster stations operate in the 88 – 108 MHz band.

Explanation

High doses of vitamin C can increase your risk of the most common type of kidney stone, calcium oxalate. Kidney stones happen when waste accumulates and clumps together in your kidneys, causing pain and difficulty urinating.

Explanation

Retina is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

Explanation

Onion is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

Explanation

Very High Frequency (VHF) have shorter wavelengths? Very high frequency is the ITU designation for the range of radio frequency electromagnetic waves from 30 to 300 megahertz, with corresponding wavelengths of ten to one meters.

Explanation

Flour particle size is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

Explanation

Colorectal Cancer is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

Explanation

‘Gravitational waves’ were detected. Billions of light-years away from the earth, two black holes have collided to create a larger one. Gravitational waves are created when two black holes orbit each other and merge. It has a mass more than 80 times that of the Sun. The resulting energy released in the form gravitational waves as the two holes spiralled in towards each other. About Gravitational Waves Gravitational waves are ‘ripples’ in space-time caused by some of the most violent and energetic processes in the Universe. Albert Einstein predicted the existence of gravitational waves in 1916 in his general theory of relativity. Einstein’s mathematics showed that massive accelerating objects (such as neutron stars or black holes orbiting each other) would disrupt space-time in such a way that ‘waves’ of undulating space-time would propagate in all directions away from the source. These cosmic ripples would travel at the speed of light, carrying with them information about their origins, as well as clues to the nature of gravity itself. The strongest gravitational waves are produced by cataclysmic events such as colliding black holes, supernovae (massive stars exploding at the end of their lifetimes), and colliding neutron stars. Other waves are predicted to be caused by the rotation of neutron stars that are not perfect spheres, and possibly even the remnants of gravitational radiation created by the Big Bang.