"Rocks and Fossils"

What is a mineral according to geologists?

• A type of rock

• Any material taken from the earth

• A solid substance made of one or more elements

• A substance made from living things

Which type of rock is formed from cooled magma?

• Sedimentary rock

• Metamorphic rock

• Organic rock

• Igneous rock

What is the main process that forms sedimentary rocks?

• Cooling of magma

• High pressure and heat

• Accumulation and compression of sediment

• Melting of rocks

What is the principle of superposition?

• Layers are always horizontal

• All layers are the same age

• Younger layers are found above older layers

• Older layers are found above younger layers

What is an unconformity in geological terms?

• A type of fault

• A gap in the rock layer sequence

• A fold in the rock layers

• A type of mineral