1) On what date does the sun have its highest declination in the northern hemisphere?

_________________________

2. On what date does the sun have its highest declination in the southern hemisphere?

_________________________

3. On what two dates does the sun cross the equator?

____________________ and ____________________

4. What is the sun's declination on:

October 30? _____________ April 15? _____________

January 10? _____________

5. On what days is the sun's declination 18°S?

______________________ and ______________________

 

1) June solstice marked between June 20 and June 22. 

2) December solstice marked between December 20 and 23. 

3) Around 20th of March and 23rd of September each year.

4) October 30 - 13.6°S

   April 15 - 9.5°N

   January 10 - 22.1°S

5) 29th of January and 14th of November.

Step-by-step explanation

1. During the June solstice, marked between June 20 and June 22, solar declination is about 23.5°N — the Tropic of Cancer.

A solstice is an event in which a planet's poles are most extremely inclined toward or away from the star it orbits.

2. During the December solstice, marked between December 20 and December 23, solar declination is about 23.5°S — the Tropic of Capricorn.

Solstices and shifting solar declinations are a result of Earth's 23.5° axial tilt as it orbits the sun. Throughout the year, this means that either the Northern or Southern Hemisphere is tilted toward the sun and receives the maximum intensity of the sun's rays.

3. An equinox is commonly regarded as the instance of time when the plane extended indefinitely in all directions of Earth's equator passes through the geometric center of the Sun's disk. This occurs twice each year, around 20 March and 23 September.

4. Declination is the angular distance of the sun north or south of the earth's equator.

5. Declination is the angular distance of the sun north or south of the earth's equator. (same explanation with number 4)