Earth orbits the sun on a tilted axis. Different hemispheres face the sun at different times. At any time during the summer or winter, one part of the.

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Presentation transcript:

Earth orbits the sun on a tilted axis. Different hemispheres face the sun at different times. At any time during the summer or winter, one part of the planet is more exposed to the sun. This exposure changes as Earth spins in its orbit.

Earth’s seasons happen because of the tilt of the Earth’s axis. This tilting is what gives us the four seasons of the year. Spring Summer Autumn Fall

The northern and southern hemispheres have opposite seasons in the same month. It is summer in the hemisphere that is tilted towards the sun and winter in the hemisphere that is tilted away from the sun.

 The length of the days change  Summer is warmer than winter

Two days of the year have equal periods of sunlight and darkness. These days are called equinoxes. March 20 th or 21 st September 22 nd or 23 rd

Solstices are the days when the sun reaches its farthest northern and southern declinations. Solstices happen twice a year: December 21 st or 22 nd June 20 th or 21 st

A. Straight B. Tilted C. Parallel

A. Spring, Hemisphere, Autumn, Winter B. Summer, Spring, Winter, Solstice C. Winter, Autumn, Summer, Spring

A. Hemispheres B. Solstices C. Equinoxes D. Direct days

A. Equinoxes B. Southern Hemispheres C. Acute Days D. Solstices

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