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The Earth's Atmosphere(1-12)

1.What is the most abundant element in the earth's atmosphere?

A) Argon.
B) Carbon dioxide.
C) Neon.
D) Nitrogen.
E) Oxygen

Answer: D

Nitrogen is a chemical element with symbol N and atomic number 7.On Earth, the element forms about 78% of Earth's atmosphere and is the most abundant uncombined element. The element nitrogen was discovered as a separable component of air by Scottish physician Daniel Rutherford in 1772. 



2. What is the correct order of earth's atmospheric layers from bottom to top?
A) Stratosphere, Mesosphere, Troposphere, Thermosphere, Exosphere.
B) Stratosphere, Troposphere, Mesosphere, Thermosphere, Exosphere.
C) Stratosphere, Troposphere, Thermosphere, Mesosphere, Exosphere.
D) Troposphere, Mesosphere, Stratosphere, Thermosphere, Exosphere.
E) Troposphere, Stratosphere, Mesosphere, Thermosphere, Exosphere.

Answer: E


3. Which layer of the atmosphere has the highest density of gas molecules?
A) Exosphere.
B) Mesosphere.
C) Stratosphere.
D) Thermosphere.
E) Troposphere.

Answer: E

4. Which layer of the atmosphere contains the ozone layer?
A) Exosphere.
B) Mesosphere.
C) Stratosphere.
D) Thermosphere.
E) Troposphere.

Answer: C

5. In which layer do virtually all weather phenomena take place?
A) Exosphere.
B) Mesosphere.
C) Stratosphere.
D) Thermosphere.
E) Troposphere.

Answer: E

6. In which layer do auroras (e.g. northern lights) occur?
A) Exosphere.
B) Mesosphere.
C) Stratosphere.
D) Thermosphere.
E) Troposphere.

Answer: D

7. Which two atmospheric  have temperature profiles that promote convection?

A) Mesosphere and Stratosphere.
B) Mesosphere and Thermosphere.
C) Mesosphere and Troposphere.
D) Stratosphere and Thermosphere.
E) Stratosphere and Troposphere.

Answer: C
  
8.What frequencies of electromagnetic radiation are absorbed by the earth's ozone layer?
A) Infrared light.
B) Microwaves
C) Radio waves.
D) Ultraviolet light.
E) Visible light.


Answer:D

9. What frequencies of electromagnetic radiation are most abundantly emitted by the sun?
A) Infrared light.
B) Microwaves.
C) Radio waves.
D) Ultraviolet light.
E) Visible light.

Answer: E

10. What frequencies of electromagnetic radiation are most abundantly emitted by the earth?
A) Infrared light.
B) Microwaves.
C) Radio waves.
D) Ultraviolet light.
E) Visible light.

Answer:A

11. What frequencies of electromagnetic radiation are absorbed by gasses in the troposphere?
A) Infrared light.
B) Microwaves.
C) Radio waves.
D) Ultraviolet light.
E) Visible light.

Answer: A

12. What instrument is used to measure air pressure?
A) Barometer.
B) Radiosonde.
C) Seismograph.
D) Thermometer.
E) Volt meter.

Answer: A