Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 86 · 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.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) does not work well (c) runs faster (d) shows two times
2. 2.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) a raincoat (c) a woollen sweater (d) nothing on your head
3. 3.🔦 Is frosted glass opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
4. 4.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.📘 Why does a shadow form? (a) light bends round it (b) the object is cold (c) an object blocks light (d) the ground is dark
6. 6.True or false: clean water is opaque. (a) True (b) False
7. 7.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a battery cell (c) a sunny open place (d) chalk to mark shadows
8. 8.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) False (b) True
9. 9.🔦 Is air opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
10. 10.⚖️ 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
11. 11.True or false: a clock to check is not needed for the shadow clock. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) air (b) tissue paper (c) clear plastic film (d) clear glass
13. 13.🔦 Is oily paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
14. 14.🧺 Which of these is needed for the shadow clock? (a) chalk to mark shadows (b) a balloon (c) a mirror (d) a magnet
15. 15.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
16. 16.🔦 Is tissue paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
17. 17.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a straight stick (c) a clock to check (d) turmeric powder
18. 18.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) look straight at the Sun (c) wear a cap (d) mark with chalk
19. 19.True or false: a book is transparent. (a) False (b) True
20. 20.True or false: oily paper is opaque. (a) False (b) True
21. 21.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is what we measure. (a) False (b) True
22. 22.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is what we measure. (a) False (b) True
23. 23.True or false: your hand is opaque. (a) False (b) True
24. 24.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) yeast (c) a battery cell (d) a sunny open place
25. 25.🔦 Is a steel plate opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
26. 26.🌍 Why does the stick’s shadow move during the day? (a) the ground slides (b) the stick walks (c) Earth keeps spinning (d) the stick grows
27. 27.⚖️ 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
28. 28.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same spot (b) the stick kept upright (c) shadow length (d) the same stick
29. 29.🔍 Which is the odd one out? (a) a wooden board (b) clear plastic film (c) a steel plate (d) a brick
30. 30.True or false: a battery cell is not needed for the shadow clock. (a) True (b) False
31. 31.⚖️ 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 time of day (c) the stick kept upright
32. 32.🔦 Is clear glass opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
33. 33.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) round (c) short (d) missing
34. 34.🔦 Is butter paper opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
35. 35.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) chalk to mark shadows (c) a magnet (d) a sunny open place
36. 36.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a straight stick (c) yeast (d) a sunny open place
37. 37.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
38. 38.🔦 Which of these is opaque? (a) a brick (b) butter paper (c) clear glass (d) tissue paper
39. 39.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same stick (b) shadow length (c) the time of day
40. 40.🔦 Which of these is translucent? (a) tissue paper (b) clear plastic film (c) a wooden board (d) air

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