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31
The revelations of a satellite photograph of the earth are as follows:
1. the Southern hemisphere bulges slightly more than the Northern hemisphere
2. it is slightly pear shaped ellipsoid of rotation
3. the polar axis of the earth is slightly shorter than the equatorial axis
4. the equatorial circumference is about 40,000km
Which of the above statements are correct ?
Discuss
Answer & Solution
Answer: Option D
Solution:
The revelations of a satellite photograph of the earth are it is slightly pear shaped ellipsoid of rotation, the polar axis of the earth is slightly shorter than the equatorial axis and the equatorial circumference is about 40,000 km.
32
Tides in the sea have stored in them ________
Discuss
Answer & Solution
Answer: Option D
Solution:
Tides in the sea have stored in them a combination of all the above three forms of energy.
33
Light from the Sun reaches us in nearly
Discuss
Answer & Solution
Answer: Option A
Solution:
The light from the sun takes about 8 minutes to reach the Earth after it has been emitted from the sun's surface.
34
The position of a planet when it is nearest to the Sun, is called ________
Discuss
Answer & Solution
Answer: Option A
Solution:
The closest point to the Sun in a planet's orbit is called perihelion. When Earth is at perihelion, it is about 147 million km (91 million miles) from the Sun.
35
How old is Earth, It is decided by which of the following processes?
Discuss
Answer & Solution
Answer: Option B
Solution:
The Earth is 4,54 billion years old. This age has been determined with the radioactive dating technique. The precise decay rate of radioactive elements is used as a clock: the number of daughter products in one rock indicates its age.
36
Why are winters more severe in Southern Hemisphere than in the Northern Hemisphere?
Discuss
Answer & Solution
Answer: Option C
Solution:
The seasons in the Southern Hemisphere are actually less extreme than in the Northern Hemisphere. The reason is because the Southern hemisphere has more seas, while the Northern has more land mass and land mass retains more heat.
37
When the Moon completely covers the Sun, it is known as?
Discuss
Answer & Solution
Answer: Option B
Solution:
During a solar eclipse, the Moon actually casts two shadows toward Earth. One shadow is called the umbra which becomes smaller as it reaches the Earth. This is the dark center of the Moon's shadow.
38
Who Invented Universal Standard Time?
Discuss
Answer & Solution
Answer: Option C
Solution:
Sandford Fleming, a Canadian engineer invented the Universal Standard Time. Sir Sandford Fleming advocated the adoption of a standard time or mean time, as well as hourly variations from that according to established time zones.
39
How many time zones has the world been divided into?
Discuss
Answer & Solution
Answer: Option B
Solution:
There are 24 time zones in the world. This signifies that the Earth is divided into 24 'slices', and each time zone moves on one hour from the previous time zone and each 'slice', is 150 wide.
40
Which of the following pair is CORRECT?
I. Prime Meridian - Longitude,
II. Tropic of Cancer - Latitude,
III. Equator - Latitude
Discuss
Answer & Solution
Answer: Option D
Solution:
Four of the most significant imaginary lines running across the surface of Earth are the equator, the Tropic of Cancer, the Tropic of Capricorn, and the Prime Meridian. While the equator is the longest line of latitude on Earth (the line where Earth is widest in an east-west direction), the tropics are based on the sun's position in relation to Earth at two points of the year. All three lines of latitude are significant in their relationship between Earth and the sun. Running in the opposite direction, north-south, the Prime Meridian is one of the most important lines of longitude on Earth.