1. Vocab Riddles

2. Soil

3. 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

4. Erosion

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

6. Weathering

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

8. Humus

9. Humus
Dark colored organic material in soil

10. Rock Cycle

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

12. Fertility

13. Fertility
A measure of how well soil supports plant growth

14. pH

15. 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)

16. Soil Horizon

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

18. Particle Size

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

20. Parent Rock

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

22. Soil Profile

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