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Day and nigh. Part 1,2.

 

(You can see this experiment in the video)

Material:

Manipulation:

  1. Make the room as dark as possible. Turn the lights off and close the curtains. The only light present must be the light of the table lamp or torch. This light must be fixed. It mustn't be moved throughout the experiment.

  2. Place the globe or ball next to the light source.

  3. Next slowly spin the globe or ball so that the identified location is plunged into light or darkness.

  4. Continue to turn the globe, always in the same direction, to observe a few cycles of night and day. In real life, how long do you think it takes the Earth to complete a full turn?

Explanation: I am sure you have already heard someone say that the sun rises in the morning and sets in the evening. Often, it seems as if the sun moves across the sky but this is just an illusion. The sun does not move! In fact, it is the Earth which rotates. The sun always shines. When it is night-time where we live, it is daytime in faraway countries located on the other side of the Earth (in China or Australia for example). It takes the Earth  24 hours to complete a full rotation. This explains why our days last 24 hours!

 

          When the background is ready it's time to draw and cut out our planet Earth..

          You can use a pin and cork or plastic bottle cap to let it rotate.

                                                                      

 

         

 

 

     

 

 

    

 

 

 

 

                 

 

 

 

 

 

 

SUN COMES OUT IN THE DAY

MOON COMES OUT IN THE NIGHT

SUN COMES OUT IN THE DAY

 AND MOON COMES OUT AT NIGHT

 

SUN COMES OUT IN THE DAY

MOON COMES OUT IN THE NIGHT

SUN COMES OUT IN THE DAY

MOON COMES OUT SAY GOOD NIGHT

Short url:   http://test.multidict.net/cs/8466