Solar System

1.	In which region is the midnight sun visible?
	A. in the Mediterranean
	B. in the equatorial region
	C. in the arctic region
	D. to the east of japan Option “C” is correct. The midnight sun is a natural phenomenon that occurs during the summer in places south of the Antarctic Circle and north of the Arctic Circle – including Northern Norway. The earth is rotating at a tilted axis relative to the sun, and during the summer months, the North Pole is angled towards our star.

2.	What is the ‘dark spot’ in the Sun?
	A. there is a big black hole in the sun
	B. spots are sources of energy during the day
	C. Spots are the places which are unable to emit light.
	D. none of these Option “C” is correct. Sunspots are areas that appear dark on the surface of the Sun. They appear dark because they are cooler than other parts of the Sun’s surface. The temperature of a sunspot is still very hot though—around 6,500 degrees Fahrenheit!

3.	What is the percentage of hydrogen in the chemical composition of the Sun?
	A. 71%’
	B. 61%’
	C. 75%’
	D. 54%’ Option “A” is correct. The Sun is a typical star, and is also the star that is nearest to the Earth. It is composed of a mixture of 73% hydrogen, 25% helium, and 2% other elements by weight.

4.	Which of the following is a star?
	A. Moon
	B. Venus
	C. Earth
	D. Sun Option “D” is correct.

5.	What is the approximate temperature on the surface of the Sun?
	A. 800 °C
	B. 600 °C
	C. 6000 °C
	D. 1000 °C Option “C” is correct. The Sun comprises 98 percent of hydrogen and helium. The surface gravity of the Sun is 274 metres per second square which is 28 times the gravity of the Earth.

6.	Which other than hydrogen is abundantly found on the surface of the Sun?
	A. Helium
	B. Neon
	C. Organ
	D. Oxygen Option “A” is correct. Hydrogen and Helium are the most plentiful elements in the Sun, accounting for over 98 percent of its mass.

7.	How many minutes does it take for the sunlight to reach the earth?
	A. 8.3
	B. 7.3
	C. 9.4
	D. 10 Option “A” is correct. Light travels at a speed of around 3,00,000 km s−1 in space. The Earth is 1.5 million km away from the Sun. So, it takes about 8 minutes and 20 seconds for the sunlight to reach Earth.

8.	Which planet is closest to the Sun?
	A. Mercury
	B. Jupiter
	C. Venus
	D. Mars Option “A” is correct. Mercury is the planet closest to the Sun, while Neptune is the farthest one from the Sun.

9.	What is the number of days in a year in Mercury constellation?
	A. 300
	B. 56
	C. 36
	D. 88 Option “D” is correct. Since Mercury is the fastest planet and has the shortest distance to travel around the Sun, it has the shortest year of all the planets in our solar system – 88 days.

10.	Which planet has phases like the moon?
	A. Mars
	B. Mercury
	C. Jupiter
	D. Uranus Option “B” is correct. In our solar system, and are : their orbits are entirely inside the Earth’s orbit. When seen from the Earth, inferior planets go through phases, like the Moon’s.

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