Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 700 · 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.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) broken glass bits (d) big wall mirrors
2. 2.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the angle of the mirrors (c) the same carton
4. 4.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) much bigger (d) flipped left to right
5. 5.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a balloon (c) vinegar (d) sticky tape
6. 6.🔭 How many times does light bounce off a mirror in a simple periscope?
7. 7.True or false: a rough wooden board reflects light well. (a) True (b) False
8. 8.📘 Light bouncing off a mirror is called ___. (a) refraction (b) magnetism (c) reflection (d) evaporation
9. 9.🔍 Which is the odd one out? (a) a rough wooden board (b) a shiny steel plate (c) dark soil (d) a dull brick
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) yeast (c) two small mirrors (d) an empty juice carton
11. 11.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
12. 12.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 45 degrees (d) 180 degrees
13. 13.True or false: a balloon is not needed for the periscope. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) still clear water (d) black cloth
15. 15.🔍 Which is the odd one out? (a) a rough wooden board (b) a mirror (c) dark soil (d) a dull brick
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
17. 17.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) an empty juice carton (d) a magnet
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the angle of the mirrors (c) the object we look at (d) the same mirrors
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) a pencil (d) a balloon
20. 20.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
21. 21.True or false: a balloon is needed for the periscope. (a) True (b) False
22. 22.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) two pictures (d) a brighter view
23. 23.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) the Sun (d) a tree
24. 24.🧺 Which of these is needed for the periscope? (a) a magnet (b) a pencil (c) vinegar (d) a balloon
25. 25.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
26. 26.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a ruler (c) two small mirrors (d) vinegar
27. 27.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) a rough wooden board (d) a shiny steel plate
28. 28.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see over a wall (d) see in the dark
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) sticky tape (d) a battery cell
30. 30.🧺 Which of these is not needed for the periscope? (a) a pencil (b) sticky tape (c) a ruler (d) a balloon
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we measure it (c) we keep it the same
32. 32.True or false: a mirror reflects light well. (a) False (b) True
33. 33.True or false: black cloth reflects light poorly. (a) True (b) False
34. 34.True or false: still clear water reflects light well. (a) False (b) True
35. 35.🔭 How many mirrors does a simple periscope use?
36. 36.⚖️ 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 change it (b) we keep it the same (c) we measure it
37. 37.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) a mirror (d) a dull brick
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) True (b) False
39. 39.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a grown-up (c) a friend who is running (d) the youngest child
40. 40.True or false: a pencil is not needed for the periscope. (a) True (b) False

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