Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 325 · 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.True or false: yeast is not needed for the periscope. (a) True (b) False
2. 2.True or false: aluminium foil reflects light poorly. (a) True (b) False
3. 3.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a friend’s toy (c) a wall (d) a tree
4. 4.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) the ground (d) nothing at all
5. 5.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
6. 6.True or false: a dull brick reflects light well. (a) False (b) True
7. 7.⚖️ 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
8. 8.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
9. 9.True or false: sticky tape is needed for the periscope. (a) True (b) False
10. 10.🔮 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
11. 11.True or false: a magnet is needed for the periscope. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) black cloth (d) a mirror
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) False (b) True
14. 14.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) so light reaches the eye (d) to make it heavy
15. 15.🔭 How many times does light bounce off a mirror in a simple periscope?
16. 16.True or false: a battery cell is not needed for the periscope. (a) True (b) False
17. 17.🔭 How many mirrors does a simple periscope use?
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) True (b) False
19. 19.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
20. 20.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) dark soil (d) still clear water
21. 21.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 45 degrees (d) 180 degrees
22. 22.True or false: vinegar is needed for the periscope. (a) False (b) True
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a balloon (c) two small mirrors (d) a pencil
24. 24.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) flipped left to right (d) upside down only
25. 25.True or false: a balloon is needed for the periscope. (a) False (b) True
26. 26.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) yeast (d) a ruler
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) two small mirrors (d) turmeric powder
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) vinegar (d) an empty juice carton
30. 30.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
31. 31.True or false: two small mirrors is needed for the periscope. (a) False (b) True
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) a pencil (c) an empty juice carton (d) two small mirrors
33. 33.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
34. 34.True or false: still clear water reflects light well. (a) True (b) False
35. 35.True or false: black cloth reflects light poorly. (a) True (b) False
36. 36.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
37. 37.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) turmeric powder (c) a magnet (d) vinegar
38. 38.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we change it (c) we keep it the same
40. 40.True or false: a mirror reflects light poorly. (a) False (b) True

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