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For most place on Earth,the year is divided into four seasons:spring, summer, autumn and winter . Each season has difference in weather, temperature and amount of daylight.
Earth’s Yearly Orbit(轨道)
Seasons occur because Earth orbits (travels around) the Sun once each year. As Earth travels, different pats of the planet slant(使倾斜) toward the Sun. This affects the amount of light and heat parts of Earth receive.
Spring
In March the equator(赤道) is again slanted to receive the most sunligt. The Northern Hemisphere(半球) enjoys spring during this time. The Southern Hemisphere goes through autumn.
Summer
In June the North Pole of Earth is tilted(倾斜的) toward the Sun. The Northern Hemisphere, including North America, receives the most sulight, producing the warmer weather and longer days of summer. The Southern Hemisphere goes through winter during this time.
Autumn
By September Earth has moved so that the equator(赤道) receives the most sunlight. Everywhere on Earth,except the North and South poles, days and nights are of equal length. During this time, autumn occurs(重现) in the Northern Hemisphere, while spring beings in the Southern Hemisphere.
Winter
In December the South Pole is tilted toward the Sun. The Northern Hemisphere receives fewer sun rays. This causes the short days and chilly(寒冷的) weather of winter. The Southern Hemisphere enjoys summer during this time.
Earth’s Yearly Orbit(轨道)
Seasons occur because Earth orbits (travels around) the Sun once each year. As Earth travels, different pats of the planet slant(使倾斜) toward the Sun. This affects the amount of light and heat parts of Earth receive.
Spring
In March the equator(赤道) is again slanted to receive the most sunligt. The Northern Hemisphere(半球) enjoys spring during this time. The Southern Hemisphere goes through autumn.
Summer
In June the North Pole of Earth is tilted(倾斜的) toward the Sun. The Northern Hemisphere, including North America, receives the most sulight, producing the warmer weather and longer days of summer. The Southern Hemisphere goes through winter during this time.
Autumn
By September Earth has moved so that the equator(赤道) receives the most sunlight. Everywhere on Earth,except the North and South poles, days and nights are of equal length. During this time, autumn occurs(重现) in the Northern Hemisphere, while spring beings in the Southern Hemisphere.
Winter
In December the South Pole is tilted toward the Sun. The Northern Hemisphere receives fewer sun rays. This causes the short days and chilly(寒冷的) weather of winter. The Southern Hemisphere enjoys summer during this time.