Chapter 11: Rocks & Weathering - Science Mcqs for Grade 8 - Set 1

1)   Rocks are made up of

a. soil
b. core
c. mantle
d. crust
Answer  Explanation 

ANSWER: crust

Explanation:
No explanation is available for this question!


2)   Water in freezing form may break the rocks in to pieces by force of

a. reduction
b. evaporation
c. expansion
d. condensation
Answer  Explanation 

ANSWER: expansion

Explanation:
No explanation is available for this question!


3)   With the passage of time the transported sediments become

a. smoother
b. smaller
c. rounder
d. all of them
Answer  Explanation 

ANSWER: all of them

Explanation:
No explanation is available for this question!


4)   The dead remains of animals and plants also accumulate to form

a. coal
b. natural oil
c. diamond
d. sedimentary layer
Answer  Explanation 

ANSWER: sedimentary layer

Explanation:
No explanation is available for this question!


5)   Weathering of rocks is affected by

a. rain
b. temperature
c. both a and b
d. erosion
Answer  Explanation 

ANSWER: both a and b

Explanation:
No explanation is available for this question!


6)   Sedimentary layers over a period of time are compacted and cemented to form

a. sedimentary rocks
b. mountains
c. deserts
d. hills
Answer  Explanation 

ANSWER: sedimentary rocks

Explanation:
No explanation is available for this question!


7)   While transportation sediments are sorted according to their

a. size
b. volume
c. color
d. chemical properties
Answer  Explanation 

ANSWER: size

Explanation:
No explanation is available for this question!


8)   Repetition in expansion and contractions in rocks give rise to

a. stress
b. heat
c. volume
d. force
Answer  Explanation 

ANSWER: stress

Explanation:
No explanation is available for this question!


9)   Granite chip on exposure to extreme temperature will be

a. broken
b. stronger
c. weaker
d. stable
Answer  Explanation 

ANSWER: broken

Explanation:
No explanation is available for this question!


10)   Colorado river moving through layers of sandstone, shale and limestone after million years have formed

a. statues
b. canyon
c. pyramid
d. wall of China
Answer  Explanation 

ANSWER: canyon

Explanation:
No explanation is available for this question!