___________ begins at 690 to 1,000 km from the surface, and extends to roughly 10,000 km.

Related Mcqs:

1. Exosphere interacts with ___________ of Earth at roughly distance of 10,000 km.

   A. Electrosphere B. Magnetosphere C. Spectrosphere D. Echosphere Submitted by: Muhammad Abdullah...

2. Troposphere extends from planetary surface to bottom of __________?

   A. Stratosphere B. Mesosphere C. Troposphere D. Thermosphere Submitted by: Muhammad Abdullah...

3. _________ extends from the top of the troposphere to the bottom of the mesosphere.

   A. Thermosphere B. Ionosphere C. Stratosphere D. None of the above Submitted by: Muhammad Abdullah...

4. The thermosphere extends from an altitude of ________ to the base of ________ at ________?

   A. 75 km, Mesosphere, 670 km B. 80 km, Ionosphere, 680 km C. 85 km, Exosphere, 690 km D. 90 km, Ozone Layer , 690 km Submitted by: Muhammad Abdullah...

5. The sun’s surface is called ___________?

   A. Cromosphere B. Leutosphere C. Thermosphere D. Photosphere  Submitted by: Muhammad Abdullah...

6. Water covers __________ of the Earth’s surface?

   A. 61% B. 67% C. 71% D. 76%...

7. Place directly above focus on Earth’s surface is known as _________?

   A. Strike B. Comma C. Epicenter D. Origin Submitted by: Rashid Mehmood...

8. What is the percentage of salt water on earth surface?

   A. 93% B. 95% C. 97%  D. 76% Submitted by: Syed Nizakat Ali Shah...

9. The moon’s surface is constantly bombarded by?

   A. Comets B. UV light C. Meteoroids D. All of the above Submitted by: Muhammad Abdullah...

10. _________ is the layer wherein most meteors are incinerated before reaching the surface.

    A. Troposphere B. Stratosphere C. Mesosphere D. Ionosphere Submitted by: Muhammad Abdullah...