universe & solar system section 6 MCQ Questions & Answers Detailed Explanation

Answer: (c)

Jupiter is the fifth planet from the Sun and is the largest planet in the solar system. If Jupiter were hollow, more than one thousand Earths could fit inside. It also contains two and a half times the mass of all the other planets combined.

It has a mass of 1.9 × 1027 kg and is 142,800 kilometers (88,736 miles) across the equator.

Answer: (c)

Light travels at 186,000 miles a second at the Earth is 93 million miles to Sun on average. This works out as 8.33 minutes for light from the Sun to reach Earth.

On average, it takes energy between 10,000 and 170,000 years to leave the sun’s interior and then be emitted from the surface as light. Sunlight, in the broad sense, is the total frequency spectrum of the electromagnetic radiation given off by the Sun, particularly infrared, visible, and ultraviolet light.

On Earth, sunlight is filtered through the Earth’s atmosphere and is obvious as daylight when the Sun is above the horizon.

Answer: (b)

Answer: (c)

Mercury is the innermost planet (nearest to the Sun) in the Solar System. It is also the smallest, and its orbit is the most eccentric (that is, the least perfectly circular) of the eight planets. It orbits the Sun once in about 88 Earth days, completing three rotations about its axis for every two orbits.

Answer: (c)

Answer: (b)