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Worksheets4 Analemma and Sunlight Angle
Total questions: 12
Worksheet time: 12mins
The Earth experiences different seasons because the Earth ___________.
Has an elliptical orbit
Moves at different speeds around the Sun.
is closer to the Sun at times and further away at others.
has an axial tilt relative to the plane of its orbit.
In the Chicago-land area (locally), the Sun appears highest in the sky during the ________________ .
Spring equinox (March 21st)
Summer solstice (June 21st)
Autumnal equinox (Sept. 22nd)
Winter solstice (Dec. 21st)
Based on the picture, which of the following is associated with the low Sun angle on December 21st, the Winter Solstice?
The Sun never sets (locally)
Large # of daylight hours
Shortest # of daylight hours
No daylight hours at all
The Earth moves around the Sun ___________.
Faster in July when the earth is at its aphelion
Faster in March and September at the equinox
Faster in January when the Earth is at its perihelion
At a constant speed.
If you photographed the Sun at the same place and the same time for a year, its path would appear to trace a _______________ in the sky.
An asymmetrical figure 8
A vertical straight line
A horizontal straight line
A teardrop shape
Which of the following best describes how our local area (42 N latitude) experiences a 'Thermal Lag Time' based on the graph?
The Sun reaches its highest position June 21st but we experience our warmest average temperatures in early August
The Sun reaches its highest position December 21st but we experience our warmest average temperatures in early August
The Sun reaches its highest point June 21st and we experience our warmest average temperatures at that date
No answer is correct
Which hemisphere is the Sun located during the N. Hemisphere's summer months?
Northern
Southern
Which hemisphere is the Sun located during the N. Hemisphere's winter months?
Northern
Southern
What is the Sun's declination on August 20th?
13o S
0o N/S (its over the Equator)
13o N
22o N
What is the Noon Sun Angle (NSA) on August 20th for Chicago, IL (42 N latitude)?
NSA = 90o - (Latitude +/- Declination)
51o
61o
13o
35o
IF today's date is August 20th, as we move toward the Autumn (Fall) equinox and away from the Summer Solstice, what is happening to the Noon Sun Angle?
It is increasing (getting higher in the sky)
It is decreasing (getting lower in the sky)
It will stay at the same height/position each day
No answer is correct
(*2 parts) Find the Declination AND Noon Sun Angle (NSA) for Chicago, IL (42 N latitude) on January 10th.
NSA = 90o - (Latitude - Declination)
22o S Declination; 24o NSA
24o S Declination; 42o NSA
22o N Declination; 72o NSA
0o S Declination; 24o NSA
