Shadow and Sundial Experiment Worksheet

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

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