Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 934 · 40 questions

What you do (Bounce, bounce, see): 1. An adult cuts a window near the top on one side of the carton and near the bottom on the other. 2. Tape one mirror at 45° behind each window, the two mirrors facing each other. 3. Look into the bottom window and adjust the mirrors until the view is clear. 4. Peep over a table or wall — never point it at the Sun.

1. 1.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
2. 2.🔭 How many mirrors does a simple periscope use?
3. 3.🔭 How many times does light bounce off a mirror in a simple periscope?
4. 4.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) two pictures (d) only darkness
5. 5.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) yeast (c) a balloon (d) a battery cell
6. 6.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
7. 7.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) a wall (d) the Sun
8. 8.🔭 What does a periscope let you do? (a) hear far sounds (b) see in the dark (c) see over a wall (d) see germs
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) a pencil (c) an empty juice carton (d) two small mirrors
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) True (b) False
11. 11.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
12. 12.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) broken glass bits (d) plastic safety mirrors
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) a ruler (d) turmeric powder
14. 14.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) dark soil (d) aluminium foil
15. 15.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
16. 16.🧺 Which of these is not needed for the periscope? (a) yeast (b) sticky tape (c) two small mirrors (d) a ruler
17. 17.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) sticky tape (c) a pencil (d) two small mirrors
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) a battery cell (d) an empty juice carton
19. 19.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) flipped left to right (c) much bigger (d) in colour
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the same light (c) the same carton (d) the angle of the mirrors
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) vinegar (d) sticky tape
22. 22.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) to make it heavy (c) so it can float (d) so light reaches the eye
23. 23.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) a rough wooden board (d) a mirror
24. 24.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
25. 25.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the object we look at”? (a) we measure it (b) we change it (c) we keep it the same
27. 27.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
28. 28.🔭 Which of these reflects light well? (a) dark soil (b) still clear water (c) a rough wooden board (d) black cloth
29. 29.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) still clear water (d) black cloth
30. 30.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
31. 31.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) True (b) False
33. 33.🧺 Which of these is needed for the periscope? (a) a balloon (b) turmeric powder (c) a magnet (d) a ruler
34. 34.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) only short walls (c) the ground (d) nothing at all
35. 35.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a rough wooden board (d) a mirror
36. 36.True or false: turmeric powder is needed for the periscope. (a) True (b) False
37. 37.True or false: aluminium foil reflects light poorly. (a) True (b) False
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) True (b) False
39. 39.True or false: a rough wooden board reflects light well. (a) False (b) True
40. 40.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) a ruler (d) turmeric powder

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