Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 846 · 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: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) coloured (c) smaller (d) bigger
2. 2.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a sunny open place (c) a battery cell (d) a magnet
3. 3.🔦 Which of these is translucent? (a) a brick (b) oily paper (c) a steel plate (d) a book
4. 4.True or false: a wooden board is opaque. (a) True (b) False
5. 5.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a battery cell (c) a straight stick (d) a sunny open place
6. 6.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a sunny open place (c) a balloon (d) chalk to mark shadows
7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is kept the same. (a) True (b) False
8. 8.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we change it (b) we keep it the same (c) we measure it
9. 9.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) turmeric powder (c) a straight stick (d) a clock to check
10. 10.🌞 When is a stick’s shadow the shortest? (a) around noon (b) at night (c) early morning (d) late evening
11. 11.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.⚖️ 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
13. 13.True or false: a mirror is not needed for the shadow clock. (a) False (b) True
14. 14.🔦 Which of these is opaque? (a) air (b) clear glass (c) a wooden board (d) clear plastic film
15. 15.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) chalk to mark shadows (c) a mirror (d) a clock to check
16. 16.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a balloon (c) chalk to mark shadows (d) a sunny open place
17. 17.⚖️ 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 stick kept upright (c) shadow length
18. 18.🔦 Which of these is translucent? (a) a brick (b) your hand (c) a book (d) frosted glass
19. 19.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) shows two times (c) does not work well (d) runs faster
20. 20.🔦 Which of these is transparent? (a) a wooden board (b) clean water (c) a steel plate (d) your hand
21. 21.🔍 Which is the odd one out? (a) your hand (b) a book (c) a steel plate (d) clear glass
22. 22.⚖️ 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 spot (c) the time of day (d) the stick kept upright
23. 23.📘 Why does a shadow form? (a) the object is cold (b) the ground is dark (c) light bends round it (d) an object blocks light
24. 24.True or false: a balloon is not needed for the shadow clock. (a) False (b) True
25. 25.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) mark with chalk (c) sit in the shade (d) look straight at the Sun
26. 26.🔍 Which is the odd one out? (a) a brick (b) a wooden board (c) your hand (d) oily paper
27. 27.🛟 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
28. 28.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a magnet (c) chalk to mark shadows (d) turmeric powder
29. 29.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
30. 30.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the stick kept upright (b) the time of day (c) the same spot (d) shadow length
31. 31.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a battery cell (c) chalk to mark shadows (d) a sunny open place
32. 32.True or false: a balloon is needed for the shadow clock. (a) False (b) True
33. 33.⚖️ 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
34. 34.True or false: turmeric powder is not needed for the shadow clock. (a) False (b) True
35. 35.True or false: clear glass is transparent. (a) False (b) True
36. 36.⚖️ 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
37. 37.🔍 Which is the odd one out? (a) clear plastic film (b) clear glass (c) frosted glass (d) clean water
38. 38.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a clock to check (c) a mirror (d) a balloon
39. 39.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) chalk to mark shadows (c) a sunny open place (d) a mirror
40. 40.True or false: a clock to check is not needed for the shadow clock. (a) False (b) True

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