Seasons Flashcards
(12 cards)
What is the tilt of Earth’s axis?
23.5° relative to its orbital plane
This tilt is crucial for the changing seasons.
What causes different parts of Earth to receive varying amounts of sunlight throughout the year?
The tilt of Earth’s axis and its revolution around the Sun
This variation is responsible for the seasons.
When does the Summer Solstice occur?
Around June 21
This is the longest day of the year in the Northern Hemisphere.
What happens during the Winter Solstice?
Occurs around December 21; shortest day of the year
The Northern Hemisphere is tilted away from the Sun.
At which latitude are the Sun’s rays directly overhead during the Summer Solstice?
Tropic of Cancer (23.5°N)
This marks the point of maximum sunlight in the Northern Hemisphere.
What is the Vernal Equinox?
Occurs around March 21; day and night are approximately equal in length
The Sun’s rays are directly overhead at the equator.
What characterizes the Fall (Autumnal) Equinox?
Occurs around September 21; day and night are approximately equal in length
Similar to the Vernal Equinox, the Sun’s rays are directly overhead at the equator.
What are the characteristics of summer?
More direct sunlight; longer days; warmer temperatures
This season typically brings the hottest weather.
What defines winter?
Less direct sunlight; shorter days; colder temperatures
This season is often associated with the coldest weather.
What changes occur during spring and fall?
Moderate sunlight; transition seasons with milder temperatures
These seasons serve as a bridge between summer and winter.
How do seasons differ in the Northern and Southern Hemispheres?
They are opposite; e.g., summer in the Northern Hemisphere is winter in the Southern Hemisphere
This is a direct result of Earth’s axial tilt.
What is the role of Earth’s orbit in relation to seasons?
Earth’s slightly elliptical orbit has minimal impact on seasons; distance from the Sun is less significant than axial tilt
The axial tilt is the primary factor influencing seasonal changes.
