Rocks, Soil and Minerals Worksheet-3
(A) Sedimentary rocks
(B) Metamorphic rocks
(C) Igneous rocks
(A) Obsidian (B) Granite (C) Pumice
(A) Pumice (B) Obsidian (C) Granite
(A) One-fourth (B) Two-fourth (C) Three-fourth
(A) Erosion (B) Forecast (C) Weathering
(A) Topsoil (B) Subsoil (C) Bedrock
(A) Conglomerate (B) Shale (C) Marble
Multiple Choice Questions (with more than one option):
(A) Sandstone (B) Pumice (C) Conglomerate
(D) Granite (E) Shale
a. Mantle is the uppermost layer of the earth.
b. Quartz is used to make pencil leads.
c. Rocks are categorized on the basis of the way of their formation.
d. Pumice is formed by quick cooling of lava.
e. Obsidian is used to make jewelleries and ornaments.
f. Shale is a sedimentary rock that is made up of solidified clay.
g. Metamorphic rocks are formed due to the physical changes only.
h. Subsoil contains fine particles of sand and clay.
i. Plants obtain all the necessary nutrients from topsoil.
j. Human beings are directly dependent on the soil.
i) Quartzite ii) Slate iii) Quartz
Fill in the blanks:
(9) a.-False; b.-False; c.-True; d.-False; e.-True; f.-True; g.-False; h.-False; i.-True; j.-False
(11) crust/ crusts