| Hint | Answer | % Correct |
|---|---|---|
| Hollow or depression sometimes caused by meteor impacts | Crater | 90%
|
| Any trace of past life preserved in a rock | Fossil | 89%
|
| Light grey or pinkish, coarse-grained, igneous rock | Granite | 85%
|
| A process where iron-rich minerals react with air to form rusty-brown oxides | Oxidation | 85%
|
| Outermost layer of Earth | Crust | 84%
|
| Process where sediment grains become squashed closer together during burial | Compaction | 82%
|
| Process of changing rocks through heat and/or pressure | Metamorphism | 81%
|
| Sedimentary rock made up of compressed and carbonised plant material | Coal | 80%
|
| Igneous rock, fine-grained and almost black in colour | Basalt | 77%
|
| Resistance to flow of a magma | Viscosity | 74%
|
| Materials are worn away and transported by natural forces such as wind or water | Erosion | 72%
|
| Layer of hot, dense rock deep beneath the surface | Mantle | 72%
|
| Bubbles formed by volcanic gases in lava, that become "frozen in" as the lava cools | Vesicle | 72%
|
| Slow breakdown of rock at the Earth's surface, due to climatic and biological processes | Weathering | 66%
|
| A body of igneous rock that cooled and crystallised from magma deep underground | Intrusion | 44%
|