3rd Grade Rocks & Minerals Mrs. Thornburg’s Vocabulary Pictures
Vocabulary Words in this Unit Mineral Weathering Rock Igneous Rock Erosion Sedimentary Rock Silt Metamorphic Rock Sand Humus Clay Loam
What do we call the part of the soil made up of broken-down pieces of dead plants and animals?
Humus
What do we call soil that is a mixture of humus, sand, silt, and clay?
Loam
What do we call a type of soil with very, very tiny grains of rock?
Clay
What do we call rock that was once melted and then cooled and hardened?
Igneous Rock
What do we call a rock made when materials settle into layers and get squeezed until they harden into rock?
Sedimentary Rock
What do we call a rock that has been changed by heat or pressure?
Metamorphic Rock
What do we call the breaking down of rock into smaller pieces?
Weathering
What is a solid object found in nature that has never been alive?
Mineral
What is a naturally formed solid made of grains of one or more minerals?
Rock
What do we call the movement of weathered rock and soil?
Erosion
What do we call soil with grains of rock that you can see with your eyes only?
Sand
What do we call soil with grains of rock that are too small to see with your eyes alone?
Silt