Rotation and revolution of earth

Science 6

1. There are two movements of the earth, rotation and revolution. Based from the movements of the earth we can also describe the effects of the earth’s motion

2. The spinning of the earth around its axis is called rotation . Earth rotates from west to east. It is clockwise as seen above the North P ole and counterclockwise as seen above the South P ole. The period of one complete rotation is defined as day and it takes 23hrs. 56 minutes and 4.2 seconds

3. Revolution is the earth’s orbit around the sun. Earth revolves around the sun as it rotates on its axis. One complete revolution of the earth is 365 ¼ days. Earth’s axis is tilted

4. Effects of the Earth’s motion

5. The occurrence of day and night is because of the earth’s rotation on its axis .Places facing the sun experience daytime while those facing away from the sun experiencenighttime . The duration of the day and night is not equal of all places of the earth because of its inclination at 23 ½ degrees . The length of daytime and nighttime varies as earth revolves arou around the sun around the sun

6. Sunrise and sunset arise because of the rotation of the earth that the sun rises in the east and sets in the west

7. Earth’s rotation affects the flow of air and water on earth. Flowing air and water are diverted from north-south direction to an east-west direction because of earth’s rotation . The diversion of direction is called Coriolis effect. Coriolis effect is the deflection of wind moving toward the equator due to the earth’s rotation.

8. Earths rotation affects the movement of water in the oceans

9. Rotation also causes difference in time. The reason why other countries have different time zones

10. There are different seasons from different countries because of the tilting of the Earth’s axis and the revolution around the sun. A particular season is also influenced by its location : the southwest monsoon and the northeast monsoon and trade winds

11. Perihelion is when the earth is closest to the sun due to the earth’s revolution. Aphelion is when the earth is farthest from the sun also due to the earth’s revolution

12. Creation of heat zones because of the revolution of the earth around the sun

13. What are the two movements of the earth? What is rotation? What is revolution?

14. Why do we have day and night? How many seasons do other countries have? What about the Philippines? Why do we have different seasons?

15. Aside from having day and night and the different seasons, can you describe other effects of the earth’s motion?

16. 1.Sun rises in the east and sets in the west 2.The earth’s rotation causes the winds moving from the poles toward the equator to be deflected or turns sideward, this wind behavior is due to Coriolis effect. 3.Rotation causes different time in different countries 4.Earth’s revolution around the sun maintains its inclination at 23 ½ degrees on its axis and one complete revolution around the sun takes 365 ¼ days 5.Perihelion is when the earth is closest to the sun 6.Aphelion is when the earth is farthest from the sun 7.Earth’s rotation affects the movement of water in the oceans 8.Speed of the earth’s rotation has affected the shape of the earth which is ellipse in shape 9.Solstices time of the year where the sun is farthest north of the equator and farthest south of the equator 10.The speed of rotation also affects the movement of the wind.

17. Match the definition in column A with the words in column B. Write the letter before the number. Column A Column B ______1. Movement of the earth around the sun A. rotation ______2. The path of the earth follows as it revolves around the sun B. axis ______3.Imaginary line in which the earth rotates C. revolution ______4. The turning od the earth on its axis D. Coriolis effect ______5.Deflection of wind moving toward the equator due E. orbit to Earth’s rotation F. seasons

18. Fill in the blanks with the correct words to complete the paragraph on the earth’s motion. The Earth’s Motion Earth has two types of motions. The movement of the earth on its 1.______ is called 2._____. Earth’s movement around the sun in a fixed paths or 3.______ is called 4.______. Earth’s revolution around the sun causes the four 5._______. And one complete revolution around the sun takes 6.______ days. As earth revolves around the sun it maintains its 7.______ at 23 ½ degrees on its axis. Earth rotates from 8.______ to 9.______ in a 10.______ motion. That is why the sun appears to rise in the east and sets in the west. orbit revolution 365 ¼ west Axis rotation inclination East seasons counterclockwise

19. Illustrate the two movements of the earth and differentiate each. Write 3 effects of the earth’s motion and describe.

20. Thank you!