Vocab Riddles

Soil

Loose weathered material on Earth’s surface in which plants can grow Soil Loose weathered material on Earth’s surface in which plants can grow

Erosion

Erosion Process by which water, ice, wind or gravity moves weathered rock or soil

Weathering

Weathering The chemical and physical processes that break down rock at Earth’s surface

Humus

Humus Dark colored organic material in soil

Rock Cycle

Rock Cycle How rock changes from one type to another over time

Fertility

Fertility A measure of how well soil supports plant growth

pH

pH A measurement of how much acid or base a material contains. Acids are low (0-6) neutral is 7, Bases are high (8-14)

Soil Horizon

Soil Horizon The layer of soil that differs in color or texture from the layers above or below it

Particle Size

Particle Size How large pieces of matter are within soil and rocks. Larger pieces weather slowly, smaller pieces weather faster

Parent Rock

Original rock from which another type of rock is formed Parent Rock Type Original rock from which another type of rock is formed

Soil Profile

Soil Profile How the different soil horizons are arranged which can affect how the soil is used. Based on color, texture, thickness, etc.