Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 190 · 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 needed for the shadow clock? (a) a magnet (b) a mirror (c) a battery cell (d) a clock to check
2. 2.True or false: clear glass is opaque. (a) False (b) True
3. 3.⚖️ 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 stick kept upright (c) the same stick (d) shadow length
4. 4.True or false: a sunny open place is needed for the shadow clock. (a) True (b) False
5. 5.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) brighter (c) bigger (d) coloured
6. 6.🔍 Which is the odd one out? (a) butter paper (b) your hand (c) a book (d) a brick
7. 7.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) works better (c) shows two times (d) runs faster
8. 8.True or false: clear glass is transparent. (a) False (b) True
9. 9.🕰️ What is a sundial used for? (a) telling the time (b) making rainbows (c) measuring rain (d) weighing things
10. 10.🔦 Which of these is opaque? (a) butter paper (b) oily paper (c) a book (d) air
11. 11.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) west (b) north (c) up (d) east
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.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) nothing on your head (c) a raincoat (d) a cap or hat
14. 14.⚖️ 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) False (b) True
15. 15.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we measure it (b) we keep it the same (c) we change it
16. 16.🧺 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 magnet (d) a straight stick
17. 17.🔦 Is clean water opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
18. 18.🧺 Which of these is not needed for the shadow clock? (a) a balloon (b) chalk to mark shadows (c) a sunny open place (d) a clock to check
19. 19.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a straight stick (c) yeast (d) turmeric powder
20. 20.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
21. 21.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
22. 22.🔦 Is tissue paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
23. 23.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a battery cell (b) a sunny open place (c) a straight stick (d) chalk to mark shadows
24. 24.📘 Why does a shadow form? (a) an object blocks light (b) light bends round it (c) the ground is dark (d) the object is cold
25. 25.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) yeast (c) chalk to mark shadows (d) a magnet
26. 26.⚖️ 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
27. 27.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) yeast (c) a sunny open place (d) a straight stick
28. 28.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) round (c) short (d) long
29. 29.🔍 Which is the odd one out? (a) a wooden board (b) your hand (c) a brick (d) clear plastic film
30. 30.🧺 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 straight stick (d) turmeric powder
31. 31.🔦 Which of these is opaque? (a) your hand (b) clean water (c) clear plastic film (d) air
32. 32.True or false: a balloon is needed for the shadow clock. (a) False (b) True
33. 33.⚖️ 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) True (b) False
34. 34.⚖️ 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
35. 35.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
36. 36.True or false: a battery cell is not needed for the shadow clock. (a) True (b) False
37. 37.⚖️ 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) True (b) False
38. 38.True or false: your hand is opaque. (a) False (b) True
39. 39.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we keep it the same (b) we measure it (c) we change it
40. 40.True or false: chalk to mark shadows is not needed for the shadow clock. (a) True (b) False

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