Speleology

Loose rock fragments can be caused by weathering, or indeed erosion. They can be found in a scree slope, and alluvial fan, a beach, in the soil (they are the soil, sometimes).

Loose rock fragments are known to a geologist as 'Unconsolidated sediment' which can be classified into various groups. Consider alluvium; the deposit from a river.

Cavern, grotto, the French word for (Cave) is Grotte.

Mammoth Cave in Kentucky is the underground cave that means huge. It is the world's longest known cave system, with over 400 miles of explored passageways, making it a popular tourist destination for exploring its vast chambers and underground landscape.

A cave system is a network of interconnected underground passages and chambers formed by natural processes such as erosion, dissolution, or volcanic activity. These systems can vary in size and complexity, often containing unique geological formations and ecosystems. Many cave systems are popular destinations for exploration and research.

=Caves tells us who lived in them and probably the drawings that the cave men have done Also the type of rocks that get piled on top of each other like sedimentary rock that gets pilled so the rock on the bottom was way back then with different rocks than the rocks from this century and the style of rock=

Carbonic acid (H2CO3) has the main compound, carbon, in the middle. carbon has a double bond with oxygen (indicated by two lines pointing towards oxygen), then it has two covalent bonds with two other oxygen molecules. those oxygen molecules have one bond each to hydrogen. here is the best illustration: http://en.wikipedia.org/wiki/File:Carbonic-acid-2D.svg

Not all acids burn through things. The strength of an acid determines its corrosive properties. Strong acids like sulfuric acid and hydrochloric acid can cause burns and damage to materials, while weak acids like acetic acid (vinegar) are less corrosive.

Very little!

Microflora (some algae and moulds)

Bacteria

Various fauna, mainly invertebrates.

Other animals, particularly bats, use caves as roost, nurseries or hibernaculae, but feed outside.

Yes, when hydrogen gas is ignited, it burns with a clean, blue flame and makes a characteristic "pop" sound due to its high combustion speed. This sound is more noticeable in a confined space where the pressure builds up before ignition.

The temperature will be influenced by where the cave is located both in altitude and where on the earth. The average temperature of caves in Texas is close to 70 degrees.Wisconsin caves will average from 49-52 degrees depending on where in the state the cave is located.

It can be called an active, dormant or extinct volcano. An active volcano erupts regularly and frequently, however, it might not erupt at some times. A dormant volcano rarely erupts. Therefore, it does not erupt for most of the time. An extinct volcano does not erupt anymore.

Three: Hydrogen, Carbon and Oxygen. It's a solution of carbon-dioxide in water.

Hydrogen is an explosive gas- remember the Hindenberg! This is regular Hydrogen not the radioactive variety- the H-bomb so powerful it needs a regular nuclear bomb to act as a detonator, a double-flash indeed.

Lava is magma that has reached the surface.

Magma can be formed from the subduction and melting of cold, dense, wet oceanic crust at some convergent plate margins. The moisture in the rock assists in the melting of the crust and the rock surrounding it. Magma is also formed at hot spots in the mantle where hot material undergoes decompression melting as it rises. Decompression melting also occurs at the mid-ocean ridges where new oceanic crust is formed from rising mantle rock.

Carbon dioxide in the atmosphere is dissolved in water, making natural rainwater slightly acidic, so when other gases such as sulphur dioxide are dissolved in rainwater, it becomes more acidic than it would be if it didn't contain carbonic acid.

Stalacite means a deposit that hangs like an icicle from the roof of a cave.

A good way to remember the two words stalacite and stalagmite is: Stalacite has a C in it so that can represent ceiling and stalagmite has a G in it which can represent ground.

A skydiver loses speed when he opens the parachute because the parachute creates drag by slowing down the movement of air. This drag force opposes the motion of the skydiver, causing a decrease in speed. Additionally, the larger surface area of the parachute increases the effect of air resistance on the skydiver's body.

The speed of a wave is a property of the medium, changing the speed would need a change in the medium itself. If the medium doesn't change as a wave moves, the wave speed is steady.

Formula: Speed = distance divided by time

That indeed is how caves develop in limestone. The solvent is rain-water weakly acidified by having absorbed atmospheric carbon-dioxide. This may be augmented by organic acids from the soil, but the Carbonic Acid is the primary reagent.

The presence of hydrogen sulfide gas in the cave can cause it to smell like rotten eggs. This gas is produced by the decay of organic matter in the absence of oxygen. It can be toxic in high concentrations.

Caves, their stalactite and stalagmite formations (calcite by precipitation & crystallising of the calcium carbonate) - and scale in kettles etc using water that has passed through the limestone uplands.

carbonic acid can react with minerals in rocks, leading to the dissolution of the minerals and erosion of the rock. This process is known as carbonic acid weathering and is a key component in the chemical weathering of rocks.

underwater caves are formed when over a period of time, tides smashes the rocks and erodes it. gradually, it forms an underwater cave.

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It's true that sea-caves, as the answer states, are formed by erosion by wave-action, and they can hold deep water, but I suspect the questioner is asking about true underwater caves. If so:

Undersea cavessuch as the Blue Holes are normal terrestrial karst caves formed in low-lying limestone at a time of depressed sea-levels (the glaciations), then drowned as sea-level rose when the ice-cover retreated.

Water-filledcaves on land areagain simply normal limestone caves, but the passages have formed vertically-sinuous profiles that trap water in "sumps",rather like the U-bend under the kitchen sink.

This type of landscape is likely a karst landscape, characterized by the presence of limestone bedrock that is easily eroded by water. Rainwater dissolves the limestone, leading to the formation of caverns, sinkholes, and deep valleys over time. Karst landscapes are common in regions with high levels of precipitation and are known for their unique topography and underground features.