1. By: Saviz Safizadeh Questions

2. Name the 3 closest planets to the sun. -----------------------------------------

3. What is the “axis of rotation”? -------------------------------- ----------------------------- ----------------------------- ----------------------------- ----------------------------- ----------------------------- -----------------------------

4. Complete this sentence: Day and night is caused by ---------- ----------------------------------------------- -----------------------------------------------

5. When scientists say the earth orbits or revolves around the sun, what do they mean? ------------------------------------------------------------------------------- --------------------------------------------------------------------------.

6. * How long does it take the Earth to fully orbit the Sun? -------------------------------- ---------------------------- * What is the speed of the Earth? --------------------miles/hr -------------------Km/hr

7. Is the Earth’s axis tilted? ----------------------- What is the angle? -------------------------------

8. Name 2 reasons why seasons change: a) ---------------------------------- b) ----------------------------------

9. Complete these sentences: On the first day of Spring … 1. the Sun shines ________ over the ________. 2. there is an ________ number of hours of ________ and _________.

10. 1. Define: a) The vernal equinox: ---------------------------------------------------------------- ----------------------------------------------------------- b) the automnal equinox: ------------------------------------------------------------- ---------------------------------------------------------- 2. When the northern hemisphere is in vernal equinox, what is happening in the southern hemisphere? -----------------------------------------------------------------------------------------------

11. In the northern hemisphere, what is the position of the north pole with respect to the sun during the summer solstice? ---------------------------------------------------------------------------------

12. what is the position of the north pole with respect to the sun during the winter solstice? ------------------------------------------------------------------

13. How does nature change in spring? --------------------------------------------------------

14. How do humans respond to the arrival of spring?------------------------- ------------------------------------------------------------------------------------------ Name a few spring holidays and celebrations. -------------------------------------------------------------------------------------------

16. Bibliography: http://www.1ststeps.org/Science/seasons.htm, October 12, 2007.http://www.1ststeps.org/Science/seasons.htm http://en.wikipedia.org/wiki/Solar_System http://www.ecology.com/archived-links/earths-rotation/index.html http://spiff.rit.edu/classes/phys301/lectures/sunmoon http://www.zoomschool.com http://upload.wikimedia.org/wikipedia/com mons