Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 395 · 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) broken glass bits (b) big wall mirrors (c) plastic safety mirrors (d) loose glass panes
2. 2.🔍 Which is the odd one out? (a) still clear water (b) dark soil (c) a dull brick (d) a rough wooden board
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) False (b) True
4. 4.True or false: a mirror reflects light well. (a) False (b) True
5. 5.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
6. 6.🔍 Which is the odd one out? (a) still clear water (b) black cloth (c) aluminium foil (d) a shiny steel plate
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) a pencil (c) a ruler (d) an empty juice carton
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) dark soil (d) a shiny steel plate
10. 10.🔍 Which is the odd one out? (a) dark soil (b) a shiny steel plate (c) a dull brick (d) black cloth
11. 11.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
12. 12.True or false: still clear water reflects light well. (a) True (b) False
13. 13.🧺 Which of these is needed for the periscope? (a) a ruler (b) a battery cell (c) a balloon (d) vinegar
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we measure it (c) we change it
15. 15.True or false: a battery cell is needed for the periscope. (a) True (b) False
16. 16.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
17. 17.True or false: a ruler is not needed for the periscope. (a) False (b) True
18. 18.🔭 How many mirrors does a simple periscope use?
19. 19.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
20. 20.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) in colour (d) flipped left to right
21. 21.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) vinegar (c) a battery cell (d) turmeric powder
22. 22.True or false: a magnet is needed for the periscope. (a) True (b) False
23. 23.🧺 Which of these is needed for the periscope? (a) a magnet (b) a pencil (c) turmeric powder (d) vinegar
24. 24.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 180 degrees (d) 45 degrees
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) True (b) False
26. 26.True or false: a pencil is not needed for the periscope. (a) True (b) False
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a balloon (d) a ruler
28. 28.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) a grown-up (d) nobody needs to
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) a magnet (d) a ruler
30. 30.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
31. 31.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) sticky tape (c) yeast (d) a ruler
32. 32.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a battery cell (c) a ruler (d) an empty juice carton
34. 34.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) reflection (c) refraction (d) evaporation
35. 35.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
36. 36.True or false: a shiny steel plate reflects light well. (a) False (b) True
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same light (b) the same mirrors (c) the angle of the mirrors (d) the same carton
38. 38.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) a wall (d) the Sun
39. 39.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) a rainbow (d) only darkness
40. 40.⚖️ 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

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