Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects
0 reads0 ratings0 helpful

Why could oceans not be permanent before crust formation on early Earth?

Answer and explanation

Correct answer: There was no solid cool surface for permanent water storage

The direct answer is Option A: there was no solid, cool surface for permanent water storage. Before crust formation, early Earth was extremely hot and much of its outer material was molten. Water vapour could condense only after sufficient cooling. Even if some liquid water appeared temporarily, a stable crust and lower temperature were needed to keep it on the surface and allow oceans to accumulate. Option A is correct because it connects crust formation, cooling, and lasting ocean formation in the right order. Option B is wrong because water existed mainly as vapour and was later supplied or released; it is incorrect to say that water did not exist at all. Option C is wrong because solar wind does not make oceans or create water in this process. Option D is wrong because ozone did not block oceans. Memory cue: cool crust first, lasting oceans later.

Related tags

Crust FormationPermanent OceansSequence

Was this question useful?

No ratings yetWrite a review / Rate this question

Student Reviews

No published reviews yet.

Add Muft Shiksha to your Home Screen

In Safari, tap Share, then Add to Home Screen.