Download App

Composition and Structure of the Atmosphere — Geography STD 9 — Question

ICSE BoardEnglish MediumSTD 9GeographyComposition and Structure of the Atmosphere3 Marks
Question
What are the properties of Ionosphere?
✓

Answer

Properties of Ionosphere :
  1. It extends from 80 km to 480 km.
  2. It contains electrically charged gas molecules which reflect the radio waves used in long-distance communication back to the earth.
  3. The northern lights or aurora borealis are in this zone,
  4. The temperature in this layer rises to a very high degree because the molecules in this layer absorb X-rays and ultraviolet radiation coming from the sun.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "[3 Mark Question Answer]" from Composition and Structure of the Atmosphere→Composition and Structure of the Atmosphere — all question types→Geography STD 9 question papers→ICSE Board STD 9 question papers→ICSE Board question paper generator→

Similar questions

What is the biological weathering?
→
Write short notes on the following: Karst plains
→
Explain the processes of physical weathering giving examples.
→
Describe the different stages in the growth of mountains.
→
Permanent and Periodic Winds.
→
“The International Date Line is not a straight line coinciding with longitude 180 degrees.” Why?
→
What are the consequences of the pressure and temperature in the interior of the earth?
→
What is the speed of rotation at the equator?
→
Name important factors which affect work of a river.
→
What are aphelion and perihelion?
→