Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 426 · 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) clear glass (d) a book
2. 2.True or false: a mirror is not needed for the shadow clock. (a) False (b) True
3. 3.⚖️ 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
4. 4.⚖️ 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) True (b) False
5. 5.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a balloon (c) a sunny open place (d) a clock to check
6. 6.🕰️ What is a sundial used for? (a) measuring rain (b) telling the time (c) weighing things (d) making rainbows
7. 7.True or false: a magnet is not needed for the shadow clock. (a) False (b) True
8. 8.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a magnet (c) a sunny open place (d) a clock to check
9. 9.True or false: a balloon is not needed for the shadow clock. (a) True (b) False
10. 10.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) turmeric powder (c) a clock to check (d) yeast
11. 11.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
12. 12.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) look straight at the Sun (c) mark with chalk (d) wear a cap
13. 13.⚖️ 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
14. 14.True or false: a battery cell is not needed for the shadow clock. (a) False (b) True
15. 15.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) clear glass (b) butter paper (c) clear plastic film (d) clean water
17. 17.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.True or false: frosted glass is translucent. (a) False (b) True
19. 19.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
20. 20.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
21. 21.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) chalk to mark shadows (c) turmeric powder (d) a straight stick
22. 22.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
23. 23.True or false: yeast is not needed for the shadow clock. (a) True (b) False
24. 24.⚖️ 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
25. 25.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a mirror (c) a sunny open place (d) a clock to check
26. 26.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) nothing on your head (c) a woollen sweater (d) a cap or hat
27. 27.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we keep it the same (b) we change it (c) we measure it
28. 28.⚖️ 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
29. 29.⚖️ 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
30. 30.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is what we measure. (a) False (b) True
31. 31.🔦 Is clear glass opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
32. 32.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) does not work well (c) works better (d) shows two times
33. 33.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) smaller (c) coloured (d) brighter
34. 34.🔍 Which is the odd one out? (a) your hand (b) frosted glass (c) butter paper (d) tissue paper
35. 35.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is kept the same. (a) False (b) True
36. 36.True or false: a steel plate is transparent. (a) True (b) False
37. 37.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) west (b) east (c) up (d) north
38. 38.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
39. 39.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) long (c) short (d) round
40. 40.🔦 Is butter paper opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent

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