What is a mineral?

• A natural solid with a fixed formula

• A crystal made in a lab

• Melted rock under the crust

• A liquid with shiny particles

Most minerals are:

• Pure gold or diamond

• Mixtures of lava and water

• Chemical compounds

• Gases trapped in rock layers

Which of the following is a mineral?

• Quartz

• A piece of glass

• Rock that formed underwater

• Crushed gravel from erosion

What is a rock?

• A group of minerals

• A frozen ocean layer

• A single crystal type

• Layers of cooled magma mixed with fossils

What does the texture and colour of a rock tell us?

• The pressure in Earth’s core

• Its chemical symbols

• Its history and formation

• If it was formed from a plant

What is the lithosphere?

• Earth’s crust and upper mantle

• The soft layer of air and clouds

• A liquid core inside the Earth

• Earth’s shifting magnetic zone below crust

Where are rocks formed?

• In the clouds through cooling

• In the lithosphere

• Between the inner and outer core

• In the biosphere during weathering

What happens when lava cools quickly?

• No rock is formed

• Large, visible crystals form

• Very small crystals form

• It turns into fossils

Where does slow cooling of magma occur?

• In volcanoes

• At the surface of the crust

• Deep underground

• Inside ocean trenches

Why do slow-cooled rocks have large crystals?

• They were once living

• They are made of soft material

• Atoms have time to arrange

• They were formed in ice