3 Truths and a Lie Rocks and Minerals © Amber Hawkes 2013.

3 Truths and a Lie Rocks and Minerals © Amber Hawkes 2013

3 truths and a lie #1 A mineral is always a solid
A mineral is always man made A minerals always has a crystal structure A mineral always has a definite chemical composition © Amber Hawkes 2013

3 truths and a lie #2 Igneous rocks form from cooling of lava at the surface Igneous rocks form from cooling of magma below the surface Igneous rocks form from heat and pressure on old rock Igneous rocks form from volcanoes © Amber Hawkes 2013

3 truths and a lie #3 The process in which sediment is glued together is called compaction Deposition is when sediment settles out of the water or wind carrying it and is laid down on the surface of the Earth Inorganic means it contains no materials that were once part of living things Rocks are formed from minerals © Amber Hawkes 2013

3 truths and a lie #4 Heat and pressure deep beneath Earth’s surface changes any rock into metamorphic rock Molten material cools and hardens into igneous rock Layers and pressure change sediment into sedimentary rock Melting and deposition change sediment into sedimentary rock © Amber Hawkes 2013

3 truths and a lie #5 Sedimentary rock cannot change into sedimentary rock Sedimentary rock can change into sedimentary rock Igneous rock can change into sedimentary rock Metamorphic rock can change into sedimentary rock © Amber Hawkes 2013

3 truths and a lie #6 Cement, brick, steel, and glass are considered minerals Metals can be minerals Coal is not a mineral Many minerals can be gemstones © Amber Hawkes 2013

3 truths and a lie #7 Compaction presses sediment together
Cementation glues sediment together Erosion moves sediment from one place to another Weathering lays down sediments from wind or water on the surface of the Earth © Amber Hawkes 2013

3 truths and a lie #8 Sedimentary rock is usually identified with layers Sedimentary rock is formed from particles of rocks created by erosion Sedimentary rock is formed from extreme heat and pressure Sedimentary rock is formed from many particles of rock being deposited on one another © Amber Hawkes 2013