Suggest a reason why iron and nickel make up the core of the Earth.

Each of the three groups of rocks is formed in different ways. State the type of rock:

• It is formed in the sea and contains fossils.

Each of the three groups of rocks is formed in different ways. State the type of rock:

• It is formed when another type of rock is changed due to very high temperature and pressure.

Each of the three groups of rocks is formed in different ways. State the type of rock:

• It is formed when hot magma cools and solidifies.

Rocks all look different. Put ticks ($✓$) in the following table, to show which key features may be present in each of the different rock types.

State which letter, A-D, in the given figure represents the following:

• Lava

State which letter, A-D, in the given figure represents the following:

• Cooled and solidified rock

State which letter, A-D, in the given figure represents the following:

• Magma