Astronomy and Celestial Phenomena

Option (2) is the correct answer as it shows that the speaker enjoys his/her morning by reading the newspaper and drinking tea or coffee.

The relationship is that of antonyms.

Shadow means a dark area or shape produced by a body coming between rays of light and a surface, and barrier means an obstacle that prevents movement or access. Hence, option 2 is the correct answer.

The latter is produced by the former. Hence, option 3 is the correct answer.

The Moon has an extremely thin atmosphere, so there is almost no Rayleigh scattering to create a blue sky like on Earth. The sky appears dark/ black even during daytime due to this lack of atmospheric scattering.

A solar eclipse occurs when the Moon passes between the Sun and Earth, blocking the Sun's light. Option D describes a syzygy (alignment) but doesn't specify which body blocks which - C is the precise answer. The Moon's shadow falls on Earth during solar eclipse.

The spring tide occurs when the moon, the sun and the earth make an angle of 180°

Sunlight takes approximately 8 minutes and 20 seconds (8.33 minutes) to travel from the Sun to Earth. This is calculated based on the average Earth-Sun distance of approximately 150 million kilometers and the speed of light at about 300,000 kilometers per second. Among the given options, 8 1/2 minutes is the closest approximation to this actual value.

A solar eclipse occurs when the Moon passes between the Earth and the Sun, blocking the Sun's light either partially or completely from certain areas on Earth. This alignment can only happen during a new moon phase when the Sun and Moon are in conjunction as seen from Earth. The Moon's shadow falls on Earth's surface, creating the eclipse phenomenon. Total solar eclipses are rare events at any given location because the Moon's shadow is relatively small.

Grammar

The sun and the moon are astronomical bodies whereas birds are animals.

In the first statement, there is a use of objective pronoun ‘us’. So, we need to use possessive pronoun ‘our’. Hence, option 3 is the correct answer.

Correct Answer: providing

The statement describes a general truth about the current state of the universe. 'There are' is the correct present tense form because countless stars and planets exist in the cosmic dark right now, not just in the past or future. 'Have been' and 'had been' refer to past time, while 'were' is also past tense. 'Will be' refers only to the future, but the stars exist now.

Time between two observe passages of a star over the same meridian of longitude is called Sidereal day. Sidereal day = 23 hours 56 min. 4.09 sec.