1) What is the top layer of soil called where plants grow? a) topsoil b) Bed Rock c) Sub Soil d) O Horizon 2) What is the layer made up of solid rock at the very bottom called? a) bedrock. b) humus. c) subsoil d) topsoil 3) Why is the topsoil important for plants? a) Because it has nutrients, water, and air that plants need to grow b) Because its dirt and its good for plants. 4) What is the name of the loose, decayed plant and animal material found in soil? a) humus b) Soil 5) Which soil layer is just beneath the topsoil? a) subsoil b) topsoil. 6) How many types of soil are there? a) 8 b) 4 7) Can you name they types of soil all of them? a) Yes b) No 8) Which type of soil holds the most water? a) Clay soil b) Sandy soil c) Loam soil d) Silt Soil 9) Which layer of soil has the most worms? a) Topsoil b) Subsoil 10) True or False: Soil is a non-living thing a) False b) True 11) How long does it take to form 1 inch of topsoil naturally? a) hundreds to thousands of years! b) 1-2 Years  12) What do earthworms do for soil? a) They help mix the soil and make it richer by breaking down organic material. b) They eat the plants. 13) How many layers of soil is there ? a) 4 Layers b) 5 Layers 14) What is the extra Layer Called ? a) Eluviation Layer b) C Horizon c) A Horizon d) B Horizon

Soil Layers

สั่งพิมพ์
ฝัง

ลีดเดอร์บอร์ด

สไตล์ภาพ

ตัวเลือก

สลับแม่แบบ

คืนค่าการบันทึกอัตโนมัติ: ใช่ไหม