light and shadow (3min)

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Light and shadows : 

Light and shadows

Slide 2: 

This is Andy. Say “Hello” to him! Andy is 9-year-old. He loves science, Just like you!

Slide 3: 

7am: One morning, Andy misses the school bus and has to walk to school.

Slide 4: 

7am: One morning, Andy misses the school bus and has to walk to school.

Slide 5: 

7am: One morning, Andy misses the school bus and has to walk to school.

Slide 6: 

7am: One morning, Andy misses the school bus and has to walk to school.

Slide 7: 

7am: One morning, Andy misses the school bus and has to walk to school.

Slide 8: 

7am: On the way to school, he realizes that his shadow is very long. It is even taller than him!

Slide 9: 

Maybe hopping will make my shadow even longer!

Slide 10: 

Maybe hopping will make my shadow even longer!

Slide 11: 

So Andy starts hopping to school.

Slide 12: 

So Andy starts hopping to school.

Slide 13: 

So Andy starts hopping to school.

Slide 14: 

9.30am: During his recess, Andy notices his shadow is shorter than in the morning.

Slide 15: 

9.30am: It is about the same height him now!

Slide 16: 

9.30am: It is about the same height him now!

Slide 17: 

12pm: On his way home from school, Andy looks very carefully at his shadow…

Slide 18: 

12pm: His shadow has become really, really, short!

Slide 19: 

Andy begins to worry… . . .

Slide 20: 

Oh no!

Slide 21: 

Oh no!

Slide 22: 

My shadow is growing smaller and smaller under the sun!

Slide 23: 

My shadow is growing smaller and smaller under the sun!

Slide 24: 

My shadow is growing smaller and smaller under the sun!

Slide 25: 

My shadow is growing smaller and smaller under the sun!

Slide 26: 

It is going to disappear!

Slide 27: 

It is going to disappear!

Slide 28: 

Andy is really very worried.

Slide 29: 

Andy is really very worried.

Slide 30: 

Andy is really very worried.

Slide 31: 

Andy couldn’t wait for his daddy to come home .

Slide 32: 

Andy couldn’t wait for his daddy to come home .

Slide 33: 

Andy couldn’t wait for his daddy to come home .

Slide 34: 

6.30pm: Andy ran out of the house to find his daddy.

Slide 35: 

6.30pm: Andy ran out of the house to find his daddy.

Slide 36: 

6.30pm: To his surprise, Andy sees that his shadow hasn’t disappeared! !

Slide 37: 

6.30pm: To his surprise, Andy sees that his shadow hasn’t disappeared! !

Slide 38: 

6.30pm: It is as tall as the shadow in the morning.

Slide 39: 

5.30pm: It is as tall as the shadow in the morning.

Slide 40: 

5.30pm: Andy is glad that his shadow did not disappear.

Slide 41: 

6.30pm: Andy is glad that his shadow did not disappear.

Slide 42: 

7pm: The sky gets darker as Andy walks home with his Daddy.

Slide 43: 

7pm: Andy notices that his shadow becomes lighter as the sky gets darker.

Slide 44: 

7pm: Andy notices that his shadow becomes lighter as the sky gets darker.

Slide 45: 

? ? ? 7pm: Andy is puzzled by what he sees.

Slide 46: 

7pm: Just as he is wondering, the street lamps light up…

Slide 48: 

!

Slide 49: 

!

Slide 50: 

! 7.30pm: Andy sees three of his own shadows!

Slide 51: 

! 7.30pm: Andy sees three of his own shadows!

Slide 53: 

9pm: That night Andy cannot fall asleep.

Slide 54: 

9pm: That night Andy cannot fall asleep.

Slide 55: 

9pm: Andy cannot help to think about his shadows.

Slide 56: 

9pm: Andy cannot help to think about his shadows.

Slide 57: 

Q1: How are shadows formed? Q2: What causes the size and position of the shadow to change?

Slide 58: 

Q3: What is the relationship between the length and position of the shadow and the time of the day?

Slide 59: 

Q4: Based on the position of my shadow, how can I tell where the light source is?

Slide 60: 

Can you help Andy to find the answers?

Andy’s questions : 

Andy’s questions Q1: How are shadows formed? Q2: What causes the size and position of the shadow to change? Q3: What is the relationship between the length and position of the shadow and the time of the day? Q4: Based on the position of my shadow, how can I tell where the light source is?