How do geological phenomena help us to know about the history of humankind?
Solution and Explanation
The geological phenomenon of separating various continents and water bodies from one compact landmass tells us about the age of existence of human race on the earth. Six hundred and fifty million years ago, no human race existed on the earth because the environment was not favorable. After the time when the dinosaurs were wiped out, the Mammals started existing and after the separation of landmass, the human race started flourishing on the earth.
Top Questions on Journey to the end of the earth
- According to Tishani Doshi in 'Journey to the End of the Earth', man's supremacy over nature is responsible for the problems we face today. Support your answer with evidence from the text. (Journey to the End of the Earth)
- CBSE CLASS XII - 2025
- English
- Journey to the end of the earth
- What was the aim of the ‘Students on Ice’ programme? (Journey to the End of the Earth)
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- Journey to the end of the earth
- Read the following extract and answer the following questions:
My journey began 13:09 degrees north of the Equator in Madras,
and involved crossing nine time zones, six checkpoints, three bodies
of water, and at least as many ecospheres.
By the time I actually set foot on the Antarctic continent I had been
travelling over 100 hours in combination of a car, an aeroplane, and
a ship; so, my first emotion on facing Antarctica’s expansive white
landscape and uninterrupted blue horizon was relief, followed up
with an immediate and profound wonder.
(Journey to the end of the Earth)
(i) Complete the following suitably.
The passage suggests that the author’s journey to Antarctica was ___.
(ii) Select the correct option from those given in brackets to fill in the blank :
The author highlights the numerous challenges and difficulties to emphasise the ___ (remoteness/proximity) of Antarctica.
(iii) How does the mention of crossing multiple time zones, checkpoints and bodies of water impact the writer?
(A) is excited by the adventure of travel
(B) feels indifferent towards the journey
(C) is surprised by the number of obstacles
(D) feels overwhelmed by the logistical challenges
(iv) How does the description of the journey reflect the author’s initial emotions upon arriving in Antarctica?- CBSE CLASS XII - 2025
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- Why did Geoff Green get tired of carting celebrities and the retired?
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- What makes Tishani Doshi write that she felt as if she was walking into a giant ping-pong ball?
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- Journey to the end of the earth
Questions Asked in CBSE CLASS XII exam
- Find the general solution of the differential equation \[ y\log y\,\frac{dx}{dy}+x=\frac{2}{y}. \]
- CBSE CLASS XII - 2026
- Differential Equations
- A square loop of side 0.50 m is placed in a uniform magnetic field of 0.4 T perpendicular to the plane of the loop. The loop is rotated through an angle of 60° in 0.2 s. The value of emf induced in the loop will be:
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- Electromagnetic induction
A racing track is built around an elliptical ground whose equation is given by \[ 9x^2 + 16y^2 = 144 \] The width of the track is \(3\) m as shown. Based on the given information answer the following:
(i) Express \(y\) as a function of \(x\) from the given equation of ellipse.
(ii) Integrate the function obtained in (i) with respect to \(x\).
(iii)(a) Find the area of the region enclosed within the elliptical ground excluding the track using integration.
OR
(iii)(b) Write the coordinates of the points \(P\) and \(Q\) where the outer edge of the track cuts \(x\)-axis and \(y\)-axis in first quadrant and find the area of triangle formed by points \(P,O,Q\).
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- Integration
- Consider a cylindrical conductor of length \( l \) and area of cross-section \( A \). Current \( I \) is maintained in the conductor and electrons drift with velocity \( \vec{v}_d \, (|\vec{v}_d| = \frac{eE}{m} \tau) \), where symbols have their usual meanings. Show that the conductivity of the material of the conductor is given by \[ \sigma = \frac{n e^2 \tau}{m}. \]
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- Current Density
- The painting Hazrat Nizamuddin Auliya and Amir Khusro belongs to which sub-school of Deccan Miniature?
- CBSE CLASS XII - 2026
- Indian Miniature Paintings and Museums