wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Q. Consider the following statements with reference to interior of the Earth:

Which of the above statements is/are correct?

A

1 only
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B

2 only
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C

Both 1 and 2
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D

Neither 1 nor 2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C
Both 1 and 2
Explanation:

Statement 1 is correct: There are three main sources of heat in the deep earth:

(1) heat from when the planet formed and accreted, which has not yet been lost; (2) frictional heating, caused by denser core material sinking to the center of the planet; and (3) heat from the decay of radioactive elements.

Statement 2 is correct: The outer layer is the earth crust –the lithosphere consists of 2 parts – the upper part consists of granitic rocks and forms the continents which comprises silica and alumina which have a density of 2.7.

The lower part consists of basaltic rocks and forms the oceans which comprises of silica, iron and magnesium which has average density of 3.0

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Plate Tectonic Theory
GEOGRAPHY
Watch in App
Join BYJU'S Learning Program
CrossIcon