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Motions of earth
- 1.
- 2. Rotation Spin or Turnon an Axis
- 3. Axis An imaginary linewhich runs through both poles of a planet. Examples of things that rotate: tops Ballerinas Figure skaters Cyclones Tornadoes A merry-go-round Earth The time for one rotation on Earth is 24 hours. The speed of Earth’s rotation is 24,855 miles/24 hr or 1,038 miles/hr
- 4. Earth’s Axis istilted 23.5 degrees from vertical Vertical Axis Tilted at 23.5 degrees
- 5. What do youobserve about the angle of the tilt?
- 6. What do youobserve about the angle of the tilt?
- 7. Rotation of theEarth causes? A. ) Days B. ) Months C. ) Years D. ) Seasons Rotation is the turning and spinning of the Earth in one place on its imaginary axis. Rotation of the earth on its axis causes
- 8. The Earth Continuously Rotateson its Axis causing Day and Night.
- 9. Rotation causes dayand night. Rotates around once in 24 hours The time required to rotate completely around once is called a day.
- 10. The Earth Continuously Orbitsthe Sun or Revolves
- 11. Revolution: is the movementof one object around a center or another object. The Earth moves in definite pattern around the Sun.
- 12.
- 13. It takes 365.25full rotations for the Earth to go around the Sun once. The time it takes for the Earth to go completely around the Sun is called a year.
- 14. Each 4 years,one day is added to the month of February to make up for the 0.25 (1/4) rotation in each revolution around the sun. February 29 This is called Leap Year.
- 15. Planets Revolution Aroundthe Sun Mercury 87.96 Earth days Venus 224.68 Earth days Earth 365.26 Earth days Mars 686.98 Earth days Jupiter 11.862 Earth years Saturn 29.456 Earth years Uranus 84.07 Earth years Neptune 164.81 Earth years Period of Revolution
- 16.
- 17. Why does seasonsoccur? Seasons occur not because of the distance it is from the sun but due to the Earth’s tilt doesn’t change as it orbits the sun.
- 18. Hemispheres The Earthis split into 4 hemispheres. Depending on the hemisphere you live in depends on the seasons. We live in the Northern and Western Hemisphere.
- 22.
- 23. 1. The Earthspinning on its axis. Rotatio n Revolution2. Going around a larger body. Rotatio n Revolutio n Revolutio n 4. Causes the Earth’s seasons. Revolutio n Rotatio n 5. Creates a year. 3. 24 hours. Rotatio n Revolutio n Revolutio n Rotatio n 6. The moon going around Earth. Revolutio n Rotatio n