Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 907 · 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? Which of these is what we measure? (a) the time of day (b) shadow length (c) the stick kept upright (d) the same spot
2. 2.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
3. 3.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
4. 4.True or false: a clock to check is needed for the shadow clock. (a) True (b) False
5. 5.🔦 Which of these is transparent? (a) butter paper (b) a wooden board (c) a steel plate (d) air
6. 6.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
7. 7.🔦 Which of these is transparent? (a) tissue paper (b) butter paper (c) clear glass (d) a wooden board
8. 8.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
9. 9.📘 Why does a shadow form? (a) the object is cold (b) light bends round it (c) the ground is dark (d) an object blocks light
10. 10.⚖️ 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 measure it (c) we change it
11. 11.🔦 Which of these is translucent? (a) a steel plate (b) tissue paper (c) clear glass (d) clean water
12. 12.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) yeast (c) a straight stick (d) a sunny open place
13. 13.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) short (c) long (d) missing
14. 14.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a balloon (c) a sunny open place (d) yeast
15. 15.🔦 Which of these is translucent? (a) a book (b) a wooden board (c) butter paper (d) clean water
16. 16.🧺 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 balloon (d) chalk to mark shadows
17. 17.True or false: a brick is translucent. (a) False (b) True
18. 18.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) shadow length (b) the stick kept upright (c) the time of day
19. 19.True or false: butter paper is translucent. (a) True (b) False
20. 20.🌞 When is a stick’s shadow the shortest? (a) late evening (b) around noon (c) at night (d) early morning
21. 21.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) sit in the shade (c) mark with chalk (d) look straight at the Sun
22. 22.⚖️ 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) the time of day (c) shadow length
23. 23.True or false: a book is opaque. (a) False (b) True
24. 24.True or false: clear glass is transparent. (a) True (b) False
25. 25.🕰️ What is a sundial used for? (a) making rainbows (b) measuring rain (c) telling the time (d) weighing things
26. 26.🛟 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
27. 27.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) yeast (c) chalk to mark shadows (d) a battery cell
28. 28.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is what we measure. (a) True (b) False
29. 29.🔦 Is clear plastic film opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
30. 30.True or false: clean water is transparent. (a) False (b) True
31. 31.True or false: air is opaque. (a) True (b) False
32. 32.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a mirror (c) turmeric powder (d) a clock to check
33. 33.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we change it (b) we measure it (c) we keep it the same
34. 34.🔍 Which is the odd one out? (a) tissue paper (b) butter paper (c) clean water (d) oily paper
35. 35.🌍 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
36. 36.🧺 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) a magnet (d) a straight stick
37. 37.⚖️ 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) shadow length (c) the time of day (d) the same stick
38. 38.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a battery cell (c) chalk to mark shadows (d) a sunny open place
39. 39.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
40. 40.⚖️ 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

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