Chapter 2: Internal Structure of Earth - Geography Mcqs for Grade 7 - Set 1

1)   The minimum thickness of crust under the oceans is

a. 8 km
b. 2 km
c. 5 km
d. 10 km
Answer  Explanation 

ANSWER: 5 km

Explanation:
No explanation is available for this question!

2)   The inner core of the Earth is made up of

a. copper
b. iron
c. nickel-iron alloy
d. platinum
Answer  Explanation 

ANSWER: iron

Explanation:
No explanation is available for this question!

3)   The division of cores of the Earth includes

a. inner core
b. tectonic core
c. outer core
d. both a and c
Answer  Explanation 

ANSWER: both a and c

Explanation:
No explanation is available for this question!

4)   The theory which states that the plates of earth are continuously moving is classified as

a. The Trench Drift Theory
b. The Sphere Drift Theory
c. The Continental Drift Theory
d. The Oceanic Drift Theory
Answer  Explanation 

ANSWER: The Continental Drift Theory

Explanation:
No explanation is available for this question!

5)   The outermost layer of the Earth is

a. asthenosphere
b. crust
c. trench
d. ridge
Answer  Explanation 

ANSWER: crust

Explanation:
No explanation is available for this question!

6)   The layer below the crust of the Earth is

a. trench
b. mantle
c. core
d. ridge
Answer  Explanation 

ANSWER: mantle

Explanation:
No explanation is available for this question!

7)   The thickness of outer core of the Earth is about

a. 2,250 km
b. 1,250 km
c. 1,500 km
d. 1,870 km
Answer  Explanation 

ANSWER: 1,250 km

Explanation:
No explanation is available for this question!

8)   The distinct layers of Earth does not include

a. crust
b. core
c. mantle
d. tectonic plates
Answer  Explanation 

ANSWER: tectonic plates

Explanation:
No explanation is available for this question!

9)   The thickness of crust under the continents is

a. 85 km
b. 40 km
c. 65 km
d. 72 km
Answer  Explanation 

ANSWER: 40 km

Explanation:
No explanation is available for this question!

10)   The outer core of the Earth is made up of

a. nickel-iron alloy
b. platinum
c. copper
d. iron
Answer  Explanation 

ANSWER: nickel-iron alloy

Explanation:
No explanation is available for this question!

11)   The thickness of outer core of the Earth is about

a. 2,130 km
b. 2,750 km
c. 2,500 km
d. 2,250 km
Answer  Explanation 

ANSWER: 2,250 km

Explanation:
No explanation is available for this question!

12)   The range of thickness of crust is

a. 5 to 60 km
b. 10 to 50 km
c. 15 to 40 km
d. 8 to 38 km
Answer  Explanation 

ANSWER: 5 to 60 km

Explanation:
No explanation is available for this question!

13)   The pieces in which Earth's crust is broken are classified as

a. ocean plates
b. ridge
c. trench
d. plates
Answer  Explanation 

ANSWER: plates

Explanation:
No explanation is available for this question!

14)   The thickness of the mantle is about

a. 3,900 km
b. 3,000 km
c. 2,900 km
d. 2,400 km
Answer  Explanation 

ANSWER: 2,900 km

Explanation:
No explanation is available for this question!

15)   The plates that are made up of the older rocks are classified as

a. continental plate
b. contraction plate
c. convection plate
d. oceanic plate
Answer  Explanation 

ANSWER: continental plate

Explanation:
No explanation is available for this question!

16)   The temperature at the core can be as high as

a. 2,550°C
b. 2,300°C
c. 3,700°C
d. 3,300°C
Answer  Explanation 

ANSWER: 3,700°C

Explanation:
No explanation is available for this question!

17)   The currents that are formed in the mantle of the Earth are classified as

a. convection currents
b. continental currents
c. oceanic currents
d. drift currents
Answer  Explanation 

ANSWER: convection currents

Explanation:
No explanation is available for this question!

18)   The types of plates includes

a. convection plate
b. oceanic plate
c. continental plate
d. both b and c
Answer  Explanation 

ANSWER: both b and c

Explanation:
No explanation is available for this question!

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