Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 599 · 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 same stick is kept the same. (a) True (b) False
2. 2.🌞 When is a stick’s shadow the shortest? (a) early morning (b) around noon (c) at night (d) late evening
3. 3.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
4. 4.⚖️ 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 time of day (c) the same stick
5. 5.🧺 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) a sunny open place
6. 6.⚖️ 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
7. 7.🔦 Which of these is translucent? (a) clear plastic film (b) clean water (c) a steel plate (d) butter paper
8. 8.🔦 Which of these is translucent? (a) air (b) a steel plate (c) a book (d) frosted glass
9. 9.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a straight stick (c) turmeric powder (d) a clock to check
10. 10.🧺 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 battery cell (d) chalk to mark shadows
11. 11.⚖️ 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 time of day (c) the same spot
12. 12.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a sunny open place (c) yeast (d) a magnet
13. 13.🔦 Is your hand opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
14. 14.📘 Why does a shadow form? (a) the object is cold (b) light bends round it (c) an object blocks light (d) the ground is dark
15. 15.🔦 Is clear plastic film opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
16. 16.🔍 Which is the odd one out? (a) a steel plate (b) a book (c) your hand (d) clean water
17. 17.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) long (c) short (d) round
18. 18.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we change it (b) we keep it the same (c) we measure it
19. 19.⚖️ 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
20. 20.🔦 Is a steel plate opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
21. 21.🛟 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
22. 22.True or false: clear glass is transparent. (a) True (b) False
23. 23.True or false: a magnet is not needed for the shadow clock. (a) False (b) True
24. 24.🧺 Which of these is needed for the shadow clock? (a) chalk to mark shadows (b) a balloon (c) yeast (d) a battery cell
25. 25.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a balloon (c) a mirror (d) a clock to check
26. 26.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the time of day (b) the same stick (c) the same spot (d) the stick kept upright
27. 27.True or false: frosted glass is transparent. (a) True (b) False
28. 28.⚖️ 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
29. 29.⚖️ 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 stick (d) the time of day
30. 30.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
31. 31.True or false: a balloon is not needed for the shadow clock. (a) True (b) False
32. 32.🔦 Is air opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
33. 33.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) runs faster (c) shows two times (d) does not work well
34. 34.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
35. 35.🕰️ What is a sundial used for? (a) weighing things (b) measuring rain (c) making rainbows (d) telling the time
36. 36.True or false: a sunny open place is needed for the shadow clock. (a) True (b) False
37. 37.🔦 Is tissue paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
38. 38.🔦 Is clean water opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
39. 39.🔦 Which of these is translucent? (a) a steel plate (b) oily paper (c) air (d) a wooden board
40. 40.True or false: a battery cell is needed for the shadow clock. (a) False (b) True

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