1) Which rock type is often formed from layers of sand and shells? a) Igneous b) Sedimentary c) Metamorphic 2) What do we call small pieces of rock and minerals that make up the Earth's surface? a) Pebbles b) Ice c) Leaves 3) Which rock can be shiny and is often used in jewelry, like rings and necklaces? a) Sandstone b) Basalt c) Quartz 4) What is the hardest natural material found on Earth? a) Sand b) Diamond c) Wood 5) What do we call a rock that has changed over time due to heat and pressure? a) Igneous b) Sedimentary c) Metamorphic 6) What are rocks made of? a) Wood b) Paper c) Minerals 7) What kind of rock is formed from cooled lava or magma? a) Pumice b) Sedimentary c) Igneous

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