Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 43 · 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.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a sunny open place (c) a mirror (d) a clock to check
2. 2.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
3. 3.🔦 Is a brick opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
4. 4.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
5. 5.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) a clock to check (c) yeast (d) a battery cell
6. 6.🧺 Which of these is needed for the shadow clock? (a) a straight stick (b) yeast (c) a magnet (d) a balloon
7. 7.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) shows two times (c) does not work well (d) works better
8. 8.🔦 Which of these is transparent? (a) clear glass (b) frosted glass (c) tissue paper (d) a wooden board
9. 9.⚖️ 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 measure it (c) we keep it the same
10. 10.🧺 Which of these is needed for the shadow clock? (a) chalk to mark shadows (b) a battery cell (c) a magnet (d) yeast
11. 11.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a sunny open place (c) chalk to mark shadows (d) yeast
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 change it (b) we measure it (c) we keep it the same
13. 13.⚖️ 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
14. 14.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we keep it the same (b) we measure it (c) we change it
15. 15.True or false: your hand is opaque. (a) False (b) True
16. 16.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a magnet (c) a clock to check (d) a straight stick
17. 17.🔦 Which of these is translucent? (a) a book (b) tissue paper (c) a steel plate (d) air
18. 18.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a woollen sweater (c) a raincoat (d) a cap or hat
19. 19.🧺 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) turmeric powder (d) a straight stick
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) False (b) True
21. 21.🔦 Is frosted glass opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
22. 22.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a balloon (b) a clock to check (c) chalk to mark shadows (d) a sunny open place
23. 23.True or false: a balloon is not needed for the shadow clock. (a) True (b) False
24. 24.📘 Why does a shadow form? (a) the ground is dark (b) an object blocks light (c) the object is cold (d) light bends round it
25. 25.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
26. 26.True or false: tissue paper is translucent. (a) True (b) False
27. 27.⚖️ 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) shadow length (c) the same spot
28. 28.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a clock to check (c) chalk to mark shadows (d) turmeric powder
29. 29.True or false: clean water is transparent. (a) True (b) False
30. 30.⚖️ 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 stick kept upright (c) the time of day (d) the same stick
31. 31.🔍 Which is the odd one out? (a) your hand (b) clear glass (c) clear plastic film (d) clean water
32. 32.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a straight stick (c) a sunny open place (d) a mirror
33. 33.🔦 Is oily paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
34. 34.⚖️ 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) shadow length (c) the same spot (d) the time of day
35. 35.🌍 Why does the stick’s shadow move during the day? (a) the stick grows (b) the ground slides (c) Earth keeps spinning (d) the stick walks
36. 36.True or false: a battery cell is not needed for the shadow clock. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) tissue paper (b) a wooden board (c) butter paper (d) oily paper
38. 38.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
39. 39.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
40. 40.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed

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