Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 439 · 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 the one thing we change? (a) the time of day (b) shadow length (c) the stick kept upright (d) the same stick
2. 2.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a balloon (b) a clock to check (c) a straight stick (d) chalk to mark shadows
3. 3.⚖️ 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 keep it the same (c) we change it
4. 4.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
5. 5.⚖️ 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
6. 6.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) mark with chalk (c) look straight at the Sun (d) sit in the shade
7. 7.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a straight stick (c) yeast (d) a clock to check
8. 8.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a straight stick (c) a mirror (d) a magnet
9. 9.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a sunny open place (c) a magnet (d) a clock to check
10. 10.True or false: tissue paper is opaque. (a) False (b) True
11. 11.🔦 Is butter paper opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
12. 12.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) works better (c) does not work well (d) runs faster
13. 13.🧺 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 battery cell (d) a sunny open place
14. 14.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) long (c) round (d) missing
15. 15.🌍 Why does the stick’s shadow move during the day? (a) the ground slides (b) the stick grows (c) the stick walks (d) Earth keeps spinning
16. 16.⚖️ 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) True (b) False
17. 17.🔦 Which of these is translucent? (a) oily paper (b) your hand (c) a steel plate (d) a wooden board
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) False (b) True
19. 19.🔍 Which is the odd one out? (a) frosted glass (b) tissue paper (c) a steel plate (d) butter paper
20. 20.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a sunny open place (c) a mirror (d) a clock to check
21. 21.🌞 When is a stick’s shadow the shortest? (a) around noon (b) early morning (c) at night (d) late evening
22. 22.⚖️ 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
23. 23.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) brighter (c) smaller (d) bigger
24. 24.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the time of day (b) shadow length (c) the stick kept upright
25. 25.📘 Why does a shadow form? (a) light bends round it (b) the object is cold (c) an object blocks light (d) the ground is dark
26. 26.True or false: clear plastic film is translucent. (a) False (b) True
27. 27.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
28. 28.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) north (b) east (c) west (d) up
29. 29.🛟 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
30. 30.True or false: chalk to mark shadows is not needed for the shadow clock. (a) True (b) False
31. 31.🕰️ What is a sundial used for? (a) measuring rain (b) weighing things (c) telling the time (d) making rainbows
32. 32.True or false: a magnet is not needed for the shadow clock. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) air (b) clear glass (c) clean water (d) tissue paper
34. 34.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we change it (b) we keep it the same (c) we measure it
35. 35.True or false: a battery cell is needed for the shadow clock. (a) True (b) False
36. 36.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a sunny open place (c) a straight stick (d) a mirror
37. 37.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
38. 38.🔦 Which of these is opaque? (a) clean water (b) clear glass (c) air (d) a wooden board
39. 39.🧺 Which of these is needed for the shadow clock? (a) a clock to check (b) a balloon (c) yeast (d) turmeric powder
40. 40.True or false: clear glass is opaque. (a) False (b) True

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