Physical Geography Flashcards
1
Q
Earth’s radius
A
Approx 6371km
2
Q
Three divisions of earth interior
A
Crust, Mantle and Core
3
Q
Crust thickness
A
Till 34 km
4
Q
Mantle depth
A
From 34 to 2900 km
5
Q
Core depth
A
From 2900km to 6371 km or 6400 km
6
Q
Composition of Crust
A
SIAL - silicon and Aluminium
7
Q
Composition of Mantle
A
SIMA
8
Q
Composition of core
A
NIFE
9
Q
Which crust is more thick oceanic or continental
A
Continental
10
Q
Oceanic crust is made up of ?
A
SIMA
11
Q
What is the reason behind high temp inside earth as per Arthur Holmes
A
Radioactive Elements
12
Q
For every ____ m 1° C temp increases inside the earth
A
32
13
Q
After 100km Rock melts true or false
A
True
14
Q
What consists of Lithosphere
A
Crust + upper part of upper mantle
Up till 100-200 km
15
Q
Lithosphere consists of SIMA AND SIAL ? T OR F
A
True
