Quiz 2

Question 1

What are the layers of the atmosphere? (Lowest to highest)

Answer 1

Troposphere, Stratosphere, Mesosphere, Thermosphere

Question 2

What are the Ionospheric layers?

Answer 2

D, E, F1, F2

Question 3

Characteristics of the Troposphere?

Answer 3

• Most clouds
• Thinner at the poles
• About 11km thick
• Temp Decreases

Question 4

Characteristics of the Stratosphere?

Answer 4

• 11-48km above earths surface
• Atmosphere is the ozone layer, absorbs most harmful ultraviolet radiation from the sun
• Highest temperature is about 0 C
• Increases (Ozone absorbs UV)

Question 5

Characteristics of the Mesosphere?

Answer 5

• Temperature decreases with altitude
• About -90C at top
• Atmosphere is rarefied
• Decreases (Coolest)

Question 6

Characteristics of the Thermosphere?

Answer 6

• Starts at about 55 km
• Temperature is quite hot (Hottest)
• Not measured using thermometer
• As high as thousands of degrees

Question 7

What is the approximate height of D Ionospheric layer?

Answer 7

Altitude 60-90km

Question 8

What is the approximate height of E Ionospheric layer?

Answer 8

Altitude 90-140km

Question 9

What is the approximate height of F1 Ionospheric layer?

Answer 9

Altitude 140-200km

Question 10

What Ionospheric layer decays at night?

Answer 10

D and E

Question 11

What produces ionization?

Answer 11

Solar radiation and energetic particles

Question 12

What are ionization loss methods?

Answer 12

Charge particles come back together to make neutral particles

Question 13

How does density change in a hydrostatic atmosphere?

Answer 13

Density decreases as it goes up the atmosphere

Question 14

What is hydrostatic atmosphere?

Answer 14

Fluid is at rest or when flow velocity at each point is constant over time

Question 15

What is the chapman layer formation?

Answer 15

• Number of photons is largest at top of ionosphere and decreases with decreasing altitude
• The number of neutrals is largest at the bottom of the atmosphere and decreases with increasing altitude
• Combining two profiles gives profile of the chapman layer

Question 16

How is the Aurora Formed?

Answer 16

Energetic particles from magnetosphere or sun come and interact with the atmospheric gases giving them energy and the energy is then released in the form of light

Question 17

fcritical?

Answer 17

Critical frequency will be perfectly reflected

Question 18

f < fcritical?

Answer 18

When you have a frequency less then critical frequency we have a complete reflection

Question 19

f > fcritical?

Answer 19

When frequency is greater the light can pass through it

Question 20

What are the Different satellite orbits?

Answer 20

Low Earth Orbit (LEO), Medium Earth Orbit (MEO), Geostationary Orbit (GEO), Highly Elliptical Orbit (HEO)

Question 21

What is atmospheric drag?

Answer 21

The friction between an object and the atmosphere as the object moves, atmospheric drag is reduced as altitude and temperature increases because density of air is reduced at higher altitude and temperatures

Question 22

What are the radiation effects on satellites?

Answer 22

• Surface Charging
• Deep Dielectric Charging
• Single event upsets
• UV Degration

Question 23

What is Faradays law of induction?

Answer 23

• Known as electromagnetic induction

- Change in the magnetic environment of a coil wire will cause voltage to be induced in coil

Question 24

What is the keplars law of planetary motion?

Answer 24

1) The law of orbits
2) The law of areas
3) The law of periods

Question 25

What is the center of mass?

Answer 25

Center of mass is the point that is weighted average of distribution mass for that object