Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 756 · 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.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) round (c) long (d) short
2. 2.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) bigger (c) coloured (d) smaller
3. 3.🔦 Is a book opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
4. 4.🧺 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 sunny open place (d) a battery cell
5. 5.🌍 Why does the stick’s shadow move during the day? (a) the stick grows (b) Earth keeps spinning (c) the ground slides (d) the stick walks
6. 6.⚖️ 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
7. 7.⚖️ 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 stick kept upright
8. 8.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) west (b) north (c) up (d) east
9. 9.🔍 Which is the odd one out? (a) clean water (b) clear glass (c) a book (d) air
10. 10.🧺 Which of these is not needed for the shadow clock? (a) turmeric powder (b) a straight stick (c) a clock to check (d) chalk to mark shadows
11. 11.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a raincoat (c) a woollen sweater (d) a cap or hat
12. 12.True or false: a straight stick is not needed for the shadow clock. (a) False (b) True
13. 13.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) sit in the shade (c) look straight at the Sun (d) wear a cap
14. 14.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
15. 15.True or false: a battery cell is not needed for the shadow clock. (a) True (b) False
16. 16.⚖️ 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
17. 17.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
18. 18.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) works better (c) runs faster (d) does not work well
19. 19.⚖️ 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
20. 20.⚖️ 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
21. 21.True or false: a wooden board is opaque. (a) False (b) True
22. 22.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) chalk to mark shadows (c) a mirror (d) a straight stick
23. 23.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a clock to check (c) turmeric powder (d) a sunny open place
24. 24.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) shadow length (b) the same stick (c) the time of day (d) the stick kept upright
25. 25.🔍 Which is the odd one out? (a) air (b) a steel plate (c) clean water (d) clear glass
26. 26.🔦 Is clear glass opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
27. 27.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) chalk to mark shadows (c) a clock to check (d) a balloon
28. 28.🧺 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 clock to check
29. 29.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) turmeric powder (c) a clock to check (d) a magnet
30. 30.🕰️ What is a sundial used for? (a) weighing things (b) measuring rain (c) making rainbows (d) telling the time
31. 31.🔍 Which is the odd one out? (a) a steel plate (b) a book (c) clear plastic film (d) your hand
32. 32.🔦 Is a steel plate opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
33. 33.🔍 Which is the odd one out? (a) frosted glass (b) butter paper (c) tissue paper (d) air
34. 34.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
35. 35.True or false: clean water is transparent. (a) True (b) False
36. 36.True or false: yeast is needed for the shadow clock. (a) False (b) True
37. 37.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
38. 38.🔦 Is air opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
39. 39.🔦 Is clean water opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
40. 40.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed

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