1. Answer in one word/sentence:
a) What are the remains of the dead plants and animals trapped in the layer of
rocks called?
b) What are the two types of Igneous Rocks?
2. Fill in the blanks:
a) The process of transformation of the rock from one to another is known as
the
b) The main mineral constituents of the continental mass are
and
3. Correct the statement:
The crust is about 15 km on the continental masses and only 1 km on the ocean
floor.
4. Natural gas, petroleum, aluminium and gold etc are examples of
a) Rocks
b) Minerals
c) Clay
d) None of the above
Answer:
1. A)Fossils: The remains of the dead plants and animals trapped in the layers of rocks are called fossils. Igneous: Latin word Ignis meaning fire.
B) intrusive and extrusive
2. A) Metamorphic rocks arise from the transformation of existing rock to new types of rock, in a process called metamorphism.
B) si-al silica and alumina
3. False
4. B is correct