Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 236 · 40 questions

What you do (Shadows point away from the Sun): 1. Stand the stick upright in the ground in an open sunny place. 2. Every hour, mark the tip of the shadow with chalk and write the time. 3. Measure the length of each shadow. 4. Wear a cap and never look straight at the Sun.

1. 1.📘 Why does a shadow form? (a) an object blocks light (b) light bends round it (c) the object is cold (d) the ground is dark
2. 2.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) a woollen sweater (c) a cap or hat (d) nothing on your head
3. 3.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we measure it (b) we change it (c) we keep it the same
4. 4.True or false: clear plastic film is translucent. (a) False (b) True
5. 5.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) turmeric powder (c) a straight stick (d) a mirror
6. 6.🔦 Which of these is opaque? (a) clear plastic film (b) butter paper (c) air (d) your hand
7. 7.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) long (c) missing (d) round
8. 8.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is what we measure. (a) True (b) False
9. 9.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) False (b) True
10. 10.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is what we measure. (a) True (b) False
11. 11.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) shadow length (b) the stick kept upright (c) the time of day
12. 12.🔍 Which is the odd one out? (a) butter paper (b) clean water (c) clear glass (d) clear plastic film
13. 13.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) look straight at the Sun (c) wear a cap (d) sit in the shade
14. 14.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the same stick (b) the time of day (c) shadow length (d) the same spot
15. 15.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
16. 16.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we measure it (b) we keep it the same (c) we change it
17. 17.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is the one thing we change. (a) True (b) False
18. 18.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we measure it (b) we change it (c) we keep it the same
19. 19.🔦 Is a book opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
20. 20.🔦 Is frosted glass opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
21. 21.🔍 Which is the odd one out? (a) clear plastic film (b) air (c) a steel plate (d) clear glass
22. 22.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) False (b) True
23. 23.🔦 Is oily paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
24. 24.🌞 When is a stick’s shadow the shortest? (a) at night (b) around noon (c) early morning (d) late evening
25. 25.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a mirror (c) chalk to mark shadows (d) a magnet
26. 26.🔦 Is a brick opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
27. 27.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a straight stick (c) chalk to mark shadows (d) a mirror
28. 28.🔦 Is butter paper opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
29. 29.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a balloon (c) a sunny open place (d) a straight stick
30. 30.True or false: a straight stick is needed for the shadow clock. (a) True (b) False
31. 31.True or false: a clock to check is not needed for the shadow clock. (a) False (b) True
32. 32.🔦 Which of these is opaque? (a) tissue paper (b) frosted glass (c) clean water (d) a brick
33. 33.🔦 Which of these is transparent? (a) a book (b) your hand (c) frosted glass (d) clear glass
34. 34.🕰️ What is a sundial used for? (a) telling the time (b) weighing things (c) making rainbows (d) measuring rain
35. 35.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) Earth keeps spinning (c) the stick grows (d) the ground slides
36. 36.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
37. 37.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) up (b) north (c) west (d) east
38. 38.🔍 Which is the odd one out? (a) butter paper (b) clean water (c) frosted glass (d) tissue paper
39. 39.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) shadow length (b) the same stick (c) the same spot (d) the stick kept upright
40. 40.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is kept the same. (a) False (b) True

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