Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 952 · 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.True or false: air is opaque. (a) False (b) True
2. 2.True or false: a battery cell is not needed for the shadow clock. (a) False (b) True
3. 3.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a raincoat (c) a cap or hat (d) a woollen sweater
4. 4.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) chalk to mark shadows (c) a mirror (d) a straight stick
5. 5.🔦 Which of these is translucent? (a) your hand (b) clear plastic film (c) clear glass (d) butter paper
6. 6.🌞 When is a stick’s shadow the shortest? (a) around noon (b) early morning (c) at night (d) late evening
7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we keep it the same (b) we change it (c) we measure it
8. 8.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we measure it (b) we change it (c) we keep it the same
9. 9.⚖️ 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
10. 10.True or false: a steel plate is opaque. (a) False (b) True
11. 11.True or false: a straight stick is needed for the shadow clock. (a) False (b) True
12. 12.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the stick kept upright (b) shadow length (c) the time of day
13. 13.🧺 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) a balloon
14. 14.True or false: yeast is not needed for the shadow clock. (a) True (b) False
15. 15.🔦 Is clean water opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
16. 16.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the time of day (b) the same spot (c) shadow length
17. 17.🔦 Is clear glass opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
18. 18.True or false: frosted glass is transparent. (a) True (b) False
19. 19.⚖️ 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) False (b) True
20. 20.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is the one thing we change. (a) True (b) False
21. 21.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is what we measure. (a) False (b) True
22. 22.🔦 Is your hand opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
23. 23.🔦 Which of these is transparent? (a) frosted glass (b) clear plastic film (c) butter paper (d) tissue paper
24. 24.🔍 Which is the odd one out? (a) clean water (b) clear glass (c) tissue paper (d) air
25. 25.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a balloon (c) a sunny open place (d) yeast
26. 26.🔍 Which is the odd one out? (a) a book (b) frosted glass (c) a steel plate (d) your hand
27. 27.🔍 Which is the odd one out? (a) a wooden board (b) butter paper (c) a brick (d) your hand
28. 28.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) turmeric powder (c) a clock to check (d) a magnet
29. 29.🔦 Is clear plastic film opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
30. 30.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) chalk to mark shadows (c) yeast (d) a sunny open place
31. 31.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) wear a cap (c) sit in the shade (d) mark with chalk
32. 32.🔦 Which of these is opaque? (a) a wooden board (b) butter paper (c) air (d) clean water
33. 33.True or false: a magnet is needed for the shadow clock. (a) True (b) False
34. 34.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
35. 35.⚖️ 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 spot (b) the same stick (c) the time of day (d) the stick kept upright
36. 36.⚖️ 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) True (b) False
37. 37.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
38. 38.🔦 Which of these is transparent? (a) clear glass (b) butter paper (c) a wooden board (d) a steel plate
39. 39.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) long (c) short (d) round
40. 40.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed

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