Pourquoi le magma est visqueux ?
Regional SpecificsLes roches solides situées en profondeur ( km) et soumises à des conditions de pression et de température élevées, fondent partiellement (fusion partielle) et forment le magma, plus ou moins visqueux suivant sa composition chimique et sa richesse en silice, qui migrera lentement vers le haut. Qu’est-ce qu’un magma visqueux ? Le magma est visqueux
What are some questions about earthquakes?
Regional SpecificsFrequently Asked Questions about Earthquakes (FAQ) What is an “earthquake”? What causes earthquakes? How do earthquakes cause damage? Does the earth open up during an earthquake? Where do earthquakes occur? What is the relationship between volcanoes and earthquakes? Will more shocks be felt after a strong earthquake? What is earthquake Short answer? An earthquake is
Where did the Kashmir earthquake happen?
Regional SpecificsMuzaffarabad How did the 2005 Kashmir earthquake happen? The 2005 Kashmir earthquake was the result of millions of years of tectonic activity. Around 225 million years ago, India was a continent, but about 50 million years ago, it collided into Asia. This collision is responsible for the Himalaya, the tallest mountain range in the world.
How is relative age important to the geologic time scale?
Regional SpecificsRelative Age Dating Geologists determine the sequence of events from their position in the rock record with older events/rocks usually occurring in the lowest layers and later events higher in the rock sequence. Why is relative age important? Relative age means age in comparison with other rocks, either younger or older. The relative ages of
Do metamorphic rocks form when melting occurs?
Regional SpecificsThe process of metamorphism does not melt the rocks, but instead transforms them into denser, more compact rocks. New minerals are created either by rearrangement of mineral components or by reactions with fluids that enter the rocks. Does metamorphic rocks be formed from melting? In order to create metamorphic rock, it is vital that the
What is BrainPOP weathering?
Regional SpecificsWhat is weathering? A process the breaks down rocks into smaller pieces. What Brainpop forces cause mechanical weathering? TIM: Mechanical weathering breaks down rocks without changing their chemical composition. Forces like growing plants, expanding ice, lightning, and mineral crystal growth can all cause mechanical weathering. What impact does weathering have on soil formation Brainpop? What