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31
When would you record the maximum angle of incidence of the sun's rays at the north pole?
Discuss
Answer & Solution
Answer: Option C
Solution:
When the sun's rays fall vertically on the Tropic of Cancer we can record the maximum angle of incidence of the sun's rays at the north pole.
32
How many kilometers are represented by 1° of latitude?
Discuss
Answer & Solution
Answer: Option C
Solution:
Around 111 kilometres( approximately ). It varies from 110.56 kms at the equator to 111.69 at the poles due to the ellipsoid shape of the earth.
33
When does solar eclipse take place?
Discuss
Answer & Solution
Answer: Option C
Solution:
A solar eclipse occurs when the moon gets between Earth and the sun, and the moon casts a shadow over Earth. A solar eclipse can only take place at the phase of new moon, when the moon passes directly between the sun and Earth and its shadows fall upon Earth's surface.
34
What is the position of the Earth when it is at the greatest distance from the Sun?
Discuss
Answer & Solution
Answer: Option A
Solution:
Earth is farther from the sun today (July 6) than at any other time of the year. On 4th July, Earth is farthest from Sun and this phenomenon is called Aphelion. This happens because Earth orbits round the Sun elliptically.
35
The planet which has the highest surface temperature is
Discuss
Answer & Solution
Answer: Option D
Solution:
The greenhouse effect on Venus causes the temperatures at its surface to reach 864° Fahrenheit (462° Celsius), making Venus the hottest planet in the entire Solar System.
36
On which of the following date/dates, Winter Solstice is observed in Northern Hemisphere?
I. 21st December
II. 5th August
III. 10th January
Discuss
Answer & Solution
Answer: Option A
Solution:
Winter Solstice is the day on which Sun shines directly above the Tropic of Capricorn. Although, normally the date is 22nd December, but as per question the closest option available 21st December.
37
Sandstone is metamorphosed to
Discuss
Answer & Solution
Answer: Option C
Solution:
Sandstone can change into quartzite by becoming a metamorphic rock. Sandstone is a sedimentary rock, a type of rock that is made through solidification of sediment layers. In order for sandstone to become quartzite, this rock needs to experience heat and pressure. Most sandstone that has become quartzite was found near compression zones of plate tectonics.
38
Heat received by earth from the Sun is known as ________
Discuss
Answer & Solution
Answer: Option C
Solution:
The heat is derived from solar energy, normally called solar radiation. Insolation is the solar radiation that reaches the earth's surface.
39
The boundary between Earth's Crust and Mantle is ________.
Discuss
Answer & Solution
Answer: Option A
Solution:
The boundary between the Earth's Crust and Mantle is referred to as Mohorovicic or simply Moho discontinuity. It lies 35 Km below continents & 7 Km beneath the ocean crust.
40
Which of the following statements with regard to the term 'great circle' is not correct?
Discuss
Answer & Solution
Answer: Option C
Solution:
Any circle that passes through two points that are opposite each other on a sphere. Many great circle can be drawn on a sphere.