Gujarat Board Class 11 Geography — Flashcards for Quick Revision

A: The word 'Geography' comes from Latin words 'Geo' (meaning Earth) and 'Graphia' (meaning to describe). Thus, Geography literally means 'Earth's description'. The term was coined by Eratosthenes, a Gre

A: According to Hartshorne, Geography is a science that describes variable forms from place to place in the form of human-world. It emphasizes the spatial variations and the relationship between humans a

A: The three short questions are: 'What is where and why of it.' These questions encompass the fundamental approach of geography - identifying phenomena (what), locating them (where), and explaining thei

A: According to Hindu mythology, the Earth rests on the back of four big elephants, which stand on the back of a great tortoise (Kurma). Some beliefs also mention that Earth rests on the head of Sheshnag

A: 1. Monistic Hypothesis - Earth originated from a single star (one parent hypothesis) 2. Binary Star/Dualistic Hypothesis - Earth originated from collision between two stars 3. Theory based on gaseous

A: The Nebular Hypothesis was first presented by German philosopher Immanuel Kant in 1755. Later, in 1796, French mathematician Pierre-Simon Laplace modified and improved this hypothesis.

A: Approximately 6370 km. This makes direct observation of Earth's interior impossible, which is why we rely on indirect methods to study its structure.

A: 1. Deep mines and oil wells (like the Robinson mine in South Africa, 4 km deep) 2. Material ejected during volcanic eruptions (magma that can be studied in laboratories)

A: Earth's average density is 5.5 gm/cm³, while surface rocks have density of only 2.7 gm/cm³. This proves that Earth's interior must be much denser than the surface, estimated at 11-12 gm/cm³ in the cor