Answer:
Features Found in a limestone region includes
Sink holes, caves, stalagmites, stalactites, limestone pavement etc.
Explanation:
Limestone's are sedimentary rocks that are majorly composed of calcium carbonate(CaCO3). This rocks are mainly found under sea water where their is abundant of corals and reefs. This organism add more calcium carbonate to the rock during their activities and even when they die.
One important characteristics of calcium carbonate is it ability to dissolve in weak acid and this what makes limestone features unique. When their is plenty of rainfall the water easily reacts with the carbon dioxide(CO2) in the atmosphere to form a weak acid. This acidic water , if it comes with contact with calcium carbonate, itdissolves in it to form calcium bicarbonate solution. The chemical reaction is as follow ;
H2O(rainfall) + CO2(carbon dioxide) → H2CO3( weak carbonic acid)
H2CO3( weak carbonic acid) + CaCO3 → Ca(HCO)3(calciulm bicarbonate solution).
Features one would expect in region that has limestone bedrocks are caves, sinkholes, limestone pavement, stalagmites and stalactites.
Caves are underground features formed when weak carbonic acid seep through limestone fissures and bedding plane to carry along calcite(calcium carbonate) creating a cavern system along the process. This weak acid forms a solution with the Calcium carbonate rocks. The acid dissolve more of the limestone rocks to form a hollow pathway underground.
Stalagmites and stalactites are formed in caves . This features are formed when the Calcium bicarbonate solution loose the water and carbon dioxide content . The calcium carbonate is left behind as water and carbon dioxide are loss from the ceiling of the caves(stalactites, an ice like structure) and the floor of the cave(stalagmites, a cone like structure) . Stalagmites grows upward due to calcium carbonate laden water seeping from the ceiling of the cave to the floor . Stalactites grows downward due to the Calcium bicarbonate solution coming from the roof and later loss water and carbon dioxide living the calcium carbonate behind.
Sink holes are depression caused when water dissolves limestone . Sink holes are usually cylindrical holes . The accumulated water in the limestone are then drained causing a depression.
Sink hole can also be formed if solution of the limestone creates a depression on the surface of the limestone.
when you have sink holes and caves in an area , it is called Karst topography.
There are different kinds of rocks. Sedimentary rocks found high in the Himalayan Mountains indicate that The Earth's crust that formed these mountains was once covered with an ocean.
The Higher Himalaya is known to be the framework of the Himalayan mountains. It is said to be composed of 10-20 km-thick metamorphic rocks (e.g. schist and gneiss) and granites.
They are found at altitudes of 3000 m to about 8000 m. These rocks are known to be of Proterozoic-Cambrian age called about 2,000-500 Ma.
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Answer: The Earth's crust that formed these mountains was once covered with an ocean
Answer:
false
Explanation:
because morocco doesn't have a president
B) P and S waves cannot travel through liquids.
C) P and S waves travel through liquids at different speeds.
D) S waves cannot travel through liquids.
The Earth’s interior is composed of several layers: the crust, the mantle and the core. Scientists used waves and their speed to study the Earth's interior. The speed of seismic waves is affected by the properties of the material the waves pass through. The stiffness of material affects the speed of these waves. P-waves, or pressure waves, go through both liquids and solids, while S-waves, or shear waves go through solids but not liquids. The following helped scientists understand that Earth's interior is liquid: S waves cannot travel through liquids. Correct answer: D