Caves

Where is San Doong Cave located?

• In Vietnam, close to Hanoi city.

• China

• Philippines

• In Vietnam, close to Saigon city

One of the main compounds found in limestone is _________

• Calcium Carbonate (Clacite)

• Dolomite

• Stalagmite

• Hydrogen

San Doong Cave runs about __________ deep

• 20km

• 13km

• 9km

• 365km

In some places San Doong Cave is ____________ wide

• 100m

• 500m

• 1km

• 150m

Han San Doong Cave is the biggest cave on our planet with about ____________ cubic meters of empty space inside.

• 100 million

• 38.5 million

• 50 million

• 2 million

Caves form easily in limestone because calcium carbonate _________

• is made out of marine animal shells

• is soft

• dissolves in oxygen

• dissolves in weak acids

Weak acids are created when H20 in the atmosphere bonds with......

• NO3

• O2

• CO2

• Helium

The weak acid that forms that erodes limestone to create caves are called..........

• Carbonic Acid

• Calcium Carbonate

• Chloride

• Natriums Chloride

Carbonic Acid is expressed........

• H3CO2

• H2CO3

• HC3

• HCO3

In which state is Mammoth Cave located?

• Washington

• Maine

• Texas

• Kentucky