Canadian Basic Qualification pool, section B-007-002

Subelement B-007

B-007

Section B-007-002

B-007-002-001

What causes the ionosphere to form?

A.
Release of fluorocarbons into the atmosphere
B.
Temperature changes ionizing the outer atmosphere
C.
Lightning ionizing the outer atmosphere
Correct Answer
D.
Solar radiation ionizing the outer atmosphere

B-007-002-001

Ultraviolet (UV) radiation and particles emanating from the Sun break down molecules in the ionosphere to form charged ions.

Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.

Tags: none

B-007-002-002

What type of solar radiation is most responsible for ionization in the outer atmosphere?

A.
Ionized particles
B.
Infrared
Correct Answer
C.
Ultraviolet
D.
Microwave

B-007-002-002

Ultraviolet (UV) radiation and particles emanating from the Sun break down molecules in the ionosphere to form charged ions.

Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.

Tags: none

B-007-002-003

Which ionospheric region is closest to the Earth?

A.
The F region
B.
The A region
C.
The E region
Correct Answer
D.
The D region

B-007-002-003

Above the troposphere and stratosphere, the regions of the ionosphere are: D, E, F1 and F2 (from lowest to highest).

Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.

Tags: none

B-007-002-004

Which region of the ionosphere is the least useful for long-distance radio-wave propagation?

A.
The E region
B.
The F2 region
C.
The F1 region
Correct Answer
D.
The D region

B-007-002-004

The D layer, lowest of the regions, is fairly dense. Once ionized during daylight hours, it ABSORBS lower frequencies ( i.e., 160 m and 80 m ).

Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.

Tags: none

B-007-002-005

Which region of the ionosphere separates into two sub-regions in the daytime?

A.
The G region
B.
The D region
C.
The E region
Correct Answer
D.
The F region

B-007-002-005

Key word: SUB-REGIONS. The F1 and F2 sub-regions present during the day combine at night to form the F region. D and E are two distinct regions of their own.

Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.

Tags: none

B-007-002-006

When is the ionosphere most ionized?

A.
Dusk
Correct Answer
B.
Midday
C.
Dawn
D.
Midnight

B-007-002-006

Key word: MOST. At midday, with the Sun shining directly at the ionosphere, ionization is most intense. As the Sun sets and throughout the night, ions recombine (how quickly depending on the density of a given layer) so that ionization is minimum right before dawn (sunrise).

Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.

Tags: none

B-007-002-007

When is ionization at a minimum in the ionosphere?

A.
Just after dusk
B.
Shortly before midnight
C.
Just after noon
Correct Answer
D.
Shortly before dawn

B-007-002-007

Key word: LEAST. At midday, with the Sun shining directly at the ionosphere, ionization is most intense. As the Sun sets and throughout the night, ions recombine (how quickly depending on the density of a given layer) so that ionization is minimum right before dawn (sunrise).

Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.

Tags: none

B-007-002-008

Why is the F2 region mainly responsible for the longest distance radio-wave propagation?

Correct Answer
A.
Because it is the highest ionospheric region
B.
Because it does not absorb radio waves as much as other ionospheric regions
C.
Because it exists only at night
D.
Because it is the lowest ionospheric region

B-007-002-008

Above the troposphere and stratosphere, the regions of the ionosphere are: D, E, F1 and F2 (from lowest to highest).

Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.

Tags: none

B-007-002-009

What is the main reason the 160-metre and 80-metre bands tend to be useful only for short-distance communications during daylight hours?

A.
Because of E region ionization
B.
Because of E region absorption
C.
Because of signal scattering
Correct Answer
D.
Because of D region absorption

B-007-002-009

The D region, lowest of the regions, is fairly dense. Once ionized during daylight hours, it ABSORBS lower frequencies ( i.e., 160 m and 80 m ).

Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.

Tags: none

B-007-002-010

During the day, what two sub-regions appear in the ionosphere?

Correct Answer
A.
F1 and F2
B.
B1 and B2
C.
D1 and D2
D.
E1 and E2

B-007-002-010

The F1 and F2 sub-regions present during the day combine at night to form the F region. The other designations simply do not exist.

Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.

Tags: none

B-007-002-011

What is the position of the E region in the ionosphere?

A.
Above the F region
Correct Answer
B.
Below the F region
C.
Above the C region
D.
Below the D region

B-007-002-011

From the Earth up and above the troposphere and stratosphere, the regions of the ionosphere are: D, E, F1 and F2.

Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.

Tags: none

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