Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 648 · 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.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
3. 3.True or false: turmeric powder is needed for the periscope. (a) False (b) True
4. 4.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
5. 5.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) still clear water (d) dark soil
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) sticky tape (d) vinegar
7. 7.🔭 How many times does light bounce off a mirror in a simple periscope?
8. 8.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) an empty juice carton (c) two small mirrors (d) a ruler
10. 10.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
11. 11.True or false: still clear water reflects light well. (a) False (b) True
12. 12.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) a rough wooden board (b) black cloth (c) a dull brick (d) a shiny steel plate
15. 15.🔭 What does a periscope let you do? (a) see germs (b) see over a wall (c) hear far sounds (d) see in the dark
16. 16.True or false: a rough wooden board reflects light well. (a) False (b) True
17. 17.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 90 degrees (c) 10 degrees (d) 45 degrees
18. 18.True or false: still clear water reflects light poorly. (a) False (b) True
19. 19.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
20. 20.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we measure it (c) we keep it the same
22. 22.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) aluminium foil (d) a rough wooden board
23. 23.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) black cloth (d) a shiny steel plate
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) a ruler (d) a balloon
25. 25.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) still clear water (c) a mirror (d) a shiny steel plate
26. 26.🧺 Which of these is needed for the periscope? (a) a ruler (b) yeast (c) a balloon (d) turmeric powder
27. 27.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) an empty juice carton (c) a magnet (d) a ruler
28. 28.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) flipped left to right (d) upside down only
29. 29.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
30. 30.⚖️ 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
31. 31.True or false: a rough wooden board reflects light poorly. (a) True (b) False
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) how clear the view is (c) the angle of the mirrors (d) the same carton
33. 33.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
34. 34.🧺 Which of these is needed for the periscope? (a) a balloon (b) a pencil (c) a magnet (d) a battery cell
35. 35.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a tree (d) a friend’s toy
36. 36.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) a rainbow (d) only darkness
37. 37.True or false: a ruler is needed for the periscope. (a) False (b) True
38. 38.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
39. 39.True or false: yeast is needed for the periscope. (a) True (b) False
40. 40.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a shiny steel plate (d) a dull brick

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