Limestone and Coral Reefs Quiz

What sort of environment requirements do coral reefs have?

• warm sunny weather and clear water

• turbid (cloudy) water and cold weather

• sunny weather but murky water

• Cold and cloudy with clear water

Where in the world are coral reefs located?

• in the tropics

• At the poles

• in areas around Britain

• in the desert

How does Limestone develop?

• It is a result of earthquakes

• It is created by glaciers

• It forms from volcanic eruptions

• It builds up as coral reefs grow and combine with sand.

What problems does using Limestone for building have?

• Too soft

• Weathering from acid rain.

• causes erosion and flooding

• Creates pollution.

Where in the UK are limestone rocks found?

• Cairngorms

• Cumbria

• London

• Yorkshire Dales

(Scary!) What is the chemical formula for the reaction of limestone with carbonic acid?

• CaCO3 + H2CO3 -> Ca(HCO3)2

• NaCl + H2SO4 -> Na2SO4 + HCl

• CaCO3 + HCl -> CaCl2 + CO2

• H2O + CO2 -> H2CO3

What is the main component of limestone?

• Calcium carbonate

• Silica

• Aluminum hydroxide

• Iron oxide

What is the primary source of calcium carbonate for limestone?

• Volcanic rocks

• Marine organisms

• Glacial deposits

• Coal deposits

What is the role of coral in the formation of limestone?

• Coral secretes calcium carbonate to form limestone

• Coral absorbs carbon dioxide from the atmosphere

• Coral provides a habitat for limestone-forming bacteria

• Coral releases acidic substances to dissolve limestone

What is the significance of limestone in the context of coral reefs?

• Limestone has no impact on coral reefs

• Limestone contributes to the erosion of coral reefs

• Limestone is a source of nutrients for coral reefs

• Limestone provides a protective barrier for coral reefs