Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 946 · 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 the stick’s shadow move during the day? (a) the stick grows (b) the stick walks (c) the ground slides (d) Earth keeps spinning
2. 2.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same stick (b) the time of day (c) shadow length (d) the same spot
3. 3.📘 Why does a shadow form? (a) an object blocks light (b) light bends round it (c) the ground is dark (d) the object is cold
4. 4.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same spot (b) the time of day (c) shadow length
5. 5.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) shadow length (b) the same stick (c) the time of day (d) the stick kept upright
6. 6.🔦 Is butter paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
7. 7.True or false: oily paper is transparent. (a) True (b) False
8. 8.⚖️ 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) the time of day (c) shadow length
9. 9.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a sunny open place (c) a clock to check (d) yeast
10. 10.🔦 Which of these is opaque? (a) clear plastic film (b) tissue paper (c) a steel plate (d) frosted glass
11. 11.⚖️ 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
12. 12.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) round (c) missing (d) short
13. 13.⚖️ 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
14. 14.🌞 When is a stick’s shadow the shortest? (a) around noon (b) early morning (c) late evening (d) at night
15. 15.True or false: a wooden board is translucent. (a) True (b) False
16. 16.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
17. 17.True or false: a clock to check is needed for the shadow clock. (a) False (b) True
18. 18.🕰️ What is a sundial used for? (a) telling the time (b) measuring rain (c) making rainbows (d) weighing things
19. 19.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a balloon (c) a sunny open place (d) a straight stick
20. 20.True or false: butter paper is translucent. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) a book (b) a brick (c) your hand (d) butter paper
22. 22.🧺 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 sunny open place (d) a mirror
23. 23.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) chalk to mark shadows (c) a balloon (d) yeast
24. 24.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a sunny open place (c) a clock to check (d) a magnet
25. 25.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
26. 26.⚖️ 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) True (b) False
27. 27.🔍 Which is the odd one out? (a) butter paper (b) clear glass (c) oily paper (d) tissue paper
28. 28.True or false: a straight stick is needed for the shadow clock. (a) True (b) False
29. 29.🔦 Is tissue paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
30. 30.True or false: clear glass is transparent. (a) False (b) True
31. 31.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) sit in the shade (c) look straight at the Sun (d) wear a cap
32. 32.True or false: clear glass is opaque. (a) False (b) True
33. 33.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
34. 34.True or false: yeast is not needed for the shadow clock. (a) True (b) False
35. 35.⚖️ 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
36. 36.🔍 Which is the odd one out? (a) a brick (b) a book (c) a steel plate (d) clear plastic film
37. 37.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) nothing on your head (c) a raincoat (d) a woollen sweater
38. 38.🔦 Is oily paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
39. 39.True or false: a battery cell is needed for the shadow clock. (a) True (b) False
40. 40.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) runs faster (c) does not work well (d) shows two times

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