Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 277 · 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.⚖️ 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
2. 2.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a mirror (c) a magnet (d) a clock to check
3. 3.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) yeast (b) a sunny open place (c) chalk to mark shadows (d) a straight stick
4. 4.⚖️ 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
5. 5.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
6. 6.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a sunny open place (c) a magnet (d) a balloon
7. 7.🔦 Which of these is translucent? (a) a book (b) a steel plate (c) air (d) oily paper
8. 8.🔍 Which is the odd one out? (a) frosted glass (b) a brick (c) your hand (d) a book
9. 9.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
10. 10.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a balloon (c) chalk to mark shadows (d) a magnet
11. 11.True or false: a battery cell is needed for the shadow clock. (a) False (b) True
12. 12.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) turmeric powder (c) a straight stick (d) yeast
13. 13.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a balloon (c) a straight stick (d) a sunny open place
14. 14.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) bigger (c) brighter (d) smaller
15. 15.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) short (c) round (d) missing
16. 16.📘 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
17. 17.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a raincoat (c) a woollen sweater (d) a cap or hat
18. 18.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
19. 19.⚖️ 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
20. 20.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) True (b) False
21. 21.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a clock to check (c) chalk to mark shadows (d) a magnet
22. 22.🔦 Is a steel plate opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
23. 23.⚖️ 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 stick (c) shadow length
24. 24.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a battery cell (c) a clock to check (d) a sunny open place
25. 25.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the stick kept upright (b) the same stick (c) the time of day (d) the same spot
26. 26.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
27. 27.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we keep it the same (b) we measure it (c) we change it
28. 28.True or false: chalk to mark shadows is not needed for the shadow clock. (a) True (b) False
29. 29.🔦 Which of these is translucent? (a) butter paper (b) a steel plate (c) a wooden board (d) a book
30. 30.🔦 Which of these is opaque? (a) butter paper (b) a wooden board (c) clean water (d) frosted glass
31. 31.🔦 Which of these is translucent? (a) a steel plate (b) tissue paper (c) clear glass (d) a wooden board
32. 32.True or false: your hand is transparent. (a) False (b) True
33. 33.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is what we measure. (a) True (b) False
34. 34.⚖️ 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
35. 35.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is the one thing we change. (a) True (b) False
36. 36.True or false: a brick is transparent. (a) False (b) True
37. 37.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
38. 38.True or false: a mirror is needed for the shadow clock. (a) True (b) False
39. 39.🌞 When is a stick’s shadow the shortest? (a) early morning (b) late evening (c) around noon (d) at night
40. 40.True or false: a sunny open place is not needed for the shadow clock. (a) True (b) False

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