Which statement is correct?

Apparent Solar day is always larger than a Sidereal day

In its path around the Sun, the axis of the Earth has an inclination:

Of 66º34’ with the plane of the path

When the sun’s declination is northerly:

Daylight period is shorter in southern hemisph than northern

Inclination of the polar axis with the ecliptic plane

The time it takes for the Earth to complete one orbit around the sun is:

365 days 5 hours 48 minutes 45 seconds

The term "sidereal" is used to describe:

A situation or relationship concerning the stars

The direction of the Earth’s rotation on its axis is such that:

Observed from above North Pole, rotation is counterclockwise

The therm “aphelion” is used to describe:

When the distance between Sun and Earth is at its longest

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GNAV: The Solar system

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General Navigation: The Solar System

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Questions 10

Answers

1
Which statement is correct?
Apparent Solar day is always larger than a Sidereal day
The duration of a Mean Solar day may vary during a year
The duration of a Sidereal day may vary during a year
We use Apparent Solar day as our civil day
2
In its path around the Sun, the axis of the Earth has an inclination:
Of 66º34’ with the plane of the path
Varying with the season of the year
Varying between zero and 23º26’ with the plane of the path
Of 23º26’ with the plane of the Equator
3
When the sun’s declination is northerly:
Daylight period is shorter in southern hemisph than northern
Midnight Sun may be observed at the South pole
Sunrise occurs earlier at southern latitudes than northern
It is winter in the northern hemisphere
4
Seasons are due to:
Variable distance between Earth and Sun
Earth’s elliptical orbit around the Sun
Earth’s rotation on its polar axis
Inclination of the polar axis with the ecliptic plane
5
The time it takes for the Earth to complete one orbit around the sun is:
360 days 5 hours 45 minutes 48 seconds
365 days 5 hours 48 minutes 45 seconds
360 days 45 hours 5 minutes 48 seconds
365 days 45 hours 48 minutes 5 seconds
6
The term "sidereal" is used to describe:
Conditions with reference to the Moon
Time interval between two transits of the real apparent Sun
How two positions of planets are located sideways on the sky
A situation or relationship concerning the stars
7
The Sun’s declination is on a particular day 12ºS. Mid-night Sun may be observed:
At 78ºS only
North of 78ºN
North of 78ºS
South of 78ºS
8
The direction of the Earth’s rotation on its axis is such that:
Observer on Earth always faces West when observing sunrise
Any point on the surface of the Earth will move east-ward
Observed from above North Pole, rotation is counterclockwise
Any point on the surface of the Earth will move west-ward
9
The therm “aphelion” is used to describe:
When the distance between Sun and Earth is at its shortest
Relative position between the Earth and the Moon
When apparent Sun is passing the plane of the equator
When the distance between Sun and Earth is at its longest
10
What is the highest latitude at which the Sun will reach an altitude of 90º above the horizon?
23º
45º
66º
0º

GNAV: The Solar system Flashcards | StudBud