Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 629 · 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 opaque? (a) air (b) butter paper (c) oily paper (d) a wooden board
2. 2.🌍 Why does the stick’s shadow move during the day? (a) Earth keeps spinning (b) the stick grows (c) the ground slides (d) the stick walks
3. 3.⚖️ 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 stick (b) the same spot (c) the stick kept upright (d) the time of day
4. 4.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
5. 5.🕰️ What is a sundial used for? (a) measuring rain (b) weighing things (c) telling the time (d) making rainbows
6. 6.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) True (b) False
7. 7.⚖️ 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
8. 8.🌞 When is a stick’s shadow the shortest? (a) early morning (b) at night (c) late evening (d) around noon
9. 9.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
10. 10.🔦 Which of these is translucent? (a) butter paper (b) air (c) clear plastic film (d) clean water
11. 11.True or false: a balloon is not needed for the shadow clock. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) a book (b) a steel plate (c) a brick (d) frosted glass
13. 13.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a straight stick (c) a magnet (d) chalk to mark shadows
14. 14.⚖️ 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
15. 15.True or false: a book is translucent. (a) False (b) True
16. 16.🧺 Which of these is not needed for the shadow clock? (a) a balloon (b) a sunny open place (c) a straight stick (d) a clock to check
17. 17.True or false: a wooden board is transparent. (a) True (b) False
18. 18.⚖️ 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
19. 19.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
20. 20.🔍 Which is the odd one out? (a) a brick (b) a book (c) a wooden board (d) clear plastic film
21. 21.📘 Why does a shadow form? (a) light bends round it (b) the object is cold (c) the ground is dark (d) an object blocks light
22. 22.True or false: chalk to mark shadows is not needed for the shadow clock. (a) False (b) True
23. 23.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a clock to check (c) a battery cell (d) a mirror
24. 24.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a sunny open place (c) turmeric powder (d) a clock to check
25. 25.True or false: a balloon is needed for the shadow clock. (a) False (b) True
26. 26.True or false: yeast is not needed for the shadow clock. (a) True (b) False
27. 27.⚖️ 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) False (b) True
28. 28.⚖️ 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
29. 29.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) wear a cap (c) sit in the shade (d) look straight at the Sun
30. 30.⚖️ 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) False (b) True
31. 31.⚖️ 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 change it (c) we keep it the same
32. 32.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) smaller (c) coloured (d) bigger
33. 33.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
34. 34.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) nothing on your head (c) a raincoat (d) a cap or hat
35. 35.🔦 Is frosted glass opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
36. 36.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a battery cell (b) a clock to check (c) chalk to mark shadows (d) a straight stick
37. 37.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
38. 38.🧺 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 balloon (d) a sunny open place
39. 39.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is the one thing we change. (a) False (b) True
40. 40.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is what we measure. (a) False (b) True

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