By:

Saviz Safizadeh

Questions

Name the 3 closest planets to the sun.

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• What is the “axis of rotation”?

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Complete this sentence:Day and night is caused by

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When scientists say the earth orbits orrevolves around the sun, what do they mean? ------------------------------------------------------------------------------

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* How long does it take the Earth to fully orbit the Sun?

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* What is the speed of the Earth?

--------------------miles/hr-------------------Km/hr

• Is the Earth’s axis tilted? -----------------------

• What is the angle? -------------------------------

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

Complete these sentences:

On the first day of Spring …1.  the Sun shines ________ over the ________.

2. there is an ________ numberof hours of ________ and _________.

1. Define:a) The vernal equinox:

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b) the automnal equinox: -----------------------------------------------------------------------------------------------------------------------

2. When the northern hemisphere is in vernal equinox, what is happening in the southern hemisphere?

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

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

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

How do humans respond to the arrival of spring?-------------------------------------------------------------------------------------------------------------------

Name a few spring holidays and celebrations. -------------------------------------------------------------------------------------------

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Bibliography:• http://www.1ststeps.org/Science/seasons.htm, October 12, 2007.• 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/commons