Question

●Why does the duration of day and night keep changing?
●How many longitudes can be drawn on a world map keeping an interval of 1° each?
●The apparent movement of the sun from east to west is a result of what?
●What is the direction of the rotation of the earth?
●While the earth rotates, how many
longitudes face the sun daily?
●At which longitude does the date change?
●How was time measured in olden days?
●In present times, what are the instruments used for time measurement?​

Answer 1

Answer:

1 The duration of day and night keep on changing due to the earth rotation and revolution.