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Questions and Answers
What causes the seasons on Earth?
What causes the seasons on Earth?
- Shifts in Earth's magnetic field
- Changes in Earth's rotation speed
- Varying distance of Earth from the Sun
- Axial parallelism of Earth's tilted orbit around the Sun (correct)
Why do animals in temperate regions undergo hibernation or migration during certain seasons?
Why do animals in temperate regions undergo hibernation or migration during certain seasons?
- Due to changes in the intensity of sunlight reaching the Earth's surface (correct)
- As a response to changes in Earth's rotation speed
- Because of variations in Earth's magnetic field
- Because of shifts in Earth's axial tilt
Which months are the warmest in the Southern Hemisphere?
Which months are the warmest in the Southern Hemisphere?
- December, January, and February (correct)
- June, July, and August
- March, April, and May
- September, October, and November
How many seasons are generally recognized in temperate and sub-polar regions based on the Gregorian calendar?
How many seasons are generally recognized in temperate and sub-polar regions based on the Gregorian calendar?
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What is the primary reason for the Sun to be higher in the sky during the summer months in the Northern Hemisphere?
What is the primary reason for the Sun to be higher in the sky during the summer months in the Northern Hemisphere?
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Study Notes
Seasons on Earth
- The changing angle of the Earth's axis, tilted at 23.5°, causes the seasons as the planet orbits the Sun.
- As the Earth rotates, different parts receive varying amounts of sunlight, resulting in seasonal changes.
Animal Adaptations
- Animals in temperate regions undergo hibernation or migration during certain seasons to conserve energy and survive the harsh conditions.
- Hibernation helps reduce energy consumption, while migration allows animals to find more favorable climates and food sources.
Southern Hemisphere Climate
- The warmest months in the Southern Hemisphere are typically December, January, and February.
Recognized Seasons
- In temperate and sub-polar regions, four seasons are generally recognized based on the Gregorian calendar: spring, summer, autumn, and winter.
Sun's Position
- The primary reason for the Sun being higher in the sky during summer months in the Northern Hemisphere is the Earth's axial tilt, which positions the Northern Hemisphere at an optimal angle to receive direct sunlight.
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