Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 911 · 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? What do we do with “the same stick”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.True or false: turmeric powder is needed for the shadow clock. (a) True (b) False
3. 3.⚖️ 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 same stick (c) the time of day
4. 4.True or false: butter paper is opaque. (a) False (b) True
5. 5.🧺 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 clock to check (d) yeast
6. 6.⚖️ 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) the same stick (c) the same spot (d) shadow length
7. 7.🕰️ What is a sundial used for? (a) making rainbows (b) telling the time (c) measuring rain (d) weighing things
8. 8.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a clock to check (c) chalk to mark shadows (d) a balloon
9. 9.⚖️ 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 keep it the same (c) we change it
10. 10.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a raincoat (c) a cap or hat (d) nothing on your head
11. 11.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) coloured (c) bigger (d) brighter
12. 12.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) shows two times (c) works better (d) does not work well
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 straight stick
14. 14.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a straight stick (c) a clock to check (d) turmeric powder
15. 15.⚖️ 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
16. 16.🔦 Is a book opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
17. 17.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a clock to check (c) a mirror (d) a straight stick
18. 18.🔦 Is butter paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
19. 19.🧺 Which of these is needed for the shadow clock? (a) a straight stick (b) a battery cell (c) a balloon (d) a mirror
20. 20.⚖️ 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
21. 21.🔦 Which of these is transparent? (a) frosted glass (b) a brick (c) tissue paper (d) clean water
22. 22.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the same spot (b) shadow length (c) the stick kept upright (d) the time of day
23. 23.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
24. 24.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is what we measure. (a) True (b) False
25. 25.True or false: a clock to check is not needed for the shadow clock. (a) False (b) True
26. 26.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is the one thing we change. (a) True (b) False
27. 27.True or false: yeast is not needed for the shadow clock. (a) False (b) True
28. 28.🔍 Which is the odd one out? (a) a steel plate (b) frosted glass (c) your hand (d) a wooden board
29. 29.🧺 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) a straight stick (d) a mirror
30. 30.🌍 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
31. 31.🧺 Which of these is needed for the shadow clock? (a) a sunny open place (b) a magnet (c) yeast (d) a balloon
32. 32.⚖️ 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
33. 33.True or false: clean water is translucent. (a) True (b) False
34. 34.True or false: a balloon is not needed for the shadow clock. (a) False (b) True
35. 35.🔦 Which of these is opaque? (a) tissue paper (b) air (c) a steel plate (d) clear plastic film
36. 36.🔦 Is frosted glass opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
37. 37.🔦 Which of these is transparent? (a) a brick (b) oily paper (c) clear glass (d) a steel plate
38. 38.🔍 Which is the odd one out? (a) a brick (b) a wooden board (c) a steel plate (d) tissue paper
39. 39.⚖️ 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
40. 40.🌞 When is a stick’s shadow the shortest? (a) around noon (b) at night (c) early morning (d) late evening

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