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Grade 8 Science Unit: 09 Lesson: 01 The Beginning of the End KEY Our Earth rotates on its… …axis once every 24 hours. The rotation of the Earth on its axis… …causes day and night. The half of the Earth facing the Sun… …experiences day time. The half of the Earth facing away from the Sun… …experiences night time. The Earth is tilted on its rotational axis… …23.5° pointing to the North Star. The Earth revolves around… …the Sun once every 365.25 days or 1 year. The change in seasons is caused by… …the tilt and revolution of the Earth. The Earth’s revolution is equal to… …one complete path around the Sun. The Earth’s rotation is equal to … …one complete spin on its axis. Our Earth rotates in a … …counterclockwise motion from west to east. The North Pole tilts toward the Sun… …in the Northern Hemisphere’s summer. The North Pole tilts away from the Sun… …in the Northern Hemisphere’s winter. During an Equinox, the Earth is… …not tilted toward the Sun. During a Solstice, the Earth is… …tilted toward the Sun. The Earth revolves around the Sun… …in a counterclockwise direction. ©2012, TESCCC 10/15/12 page 1 of 1
