Rocks and Soils Crossword Puzzle

QUESTIONS LIST:

• sedimentary: _ rocks are formed in layers.
• sieve: you can use a _ to separate different sized pieces in soil.
• wear: granite is used for doorsteps because it doesn't _ out easily.
• natural: rocks are _ materials.
• fossils: dead plants and animals form _ in sedimentary rocks.
• sandy: _ soils let water run through them easily.
• split: slate is used for roof tiles because it can be _ into thin sheets.
• strong: rocks are used to build walls because they are _ .
• volcano: when a _ erupts, magma reaches the surface of the earth and cools quickly.
• igneous: _ rocks are formed when magma (melted rock) cools.
• grains: the texture of a rock describes the _ in it.
• clay: _ soils do not let water run through them easily.
• crystals: _ are often found in igneous rocks.
• marble: _ rock is often used to make table tops and statues.
• metamorphic: _ rocks have been changed by heat or pressure.