Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 89 · 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.⚖️ 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 angle of the mirrors (c) how clear the view is (d) the same carton
2. 2.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) nothing at all (d) the ground
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) True (b) False
4. 4.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) a mirror (d) dark soil
6. 6.🔭 Which of these reflects light poorly? (a) a dull brick (b) a mirror (c) aluminium foil (d) a shiny steel plate
7. 7.🔭 How many mirrors does a simple periscope use?
8. 8.True or false: a balloon is needed for the periscope. (a) True (b) False
9. 9.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
10. 10.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) only darkness (d) a brighter view
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) a pencil (c) sticky tape (d) two small mirrors
12. 12.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) a rough wooden board (d) a shiny steel plate
14. 14.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
15. 15.🔭 Which of these reflects light well? (a) a rough wooden board (b) a dull brick (c) black cloth (d) still clear water
16. 16.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
17. 17.True or false: a rough wooden board reflects light well. (a) False (b) True
18. 18.True or false: a magnet is needed for the periscope. (a) True (b) False
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we keep it the same (c) we measure it
20. 20.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) flipped left to right (d) in colour
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) an empty juice carton (d) vinegar
22. 22.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) broken glass bits (c) plastic safety mirrors (d) loose glass panes
23. 23.🔭 How many times does light bounce off a mirror in a simple periscope?
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) a battery cell (d) a ruler
25. 25.🔍 Which is the odd one out? (a) a dull brick (b) a shiny steel plate (c) a mirror (d) aluminium foil
26. 26.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
27. 27.🧺 Which of these is needed for the periscope? (a) a magnet (b) a pencil (c) a balloon (d) yeast
28. 28.🧺 Which of these is needed for the periscope? (a) a ruler (b) yeast (c) vinegar (d) a balloon
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
30. 30.🧺 Which of these is not needed for the periscope? (a) yeast (b) an empty juice carton (c) sticky tape (d) a pencil
31. 31.True or false: a mirror reflects light well. (a) True (b) False
32. 32.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a friend’s toy (c) a wall (d) a tree
33. 33.🔭 Which of these reflects light well? (a) a rough wooden board (b) a shiny steel plate (c) black cloth (d) dark soil
34. 34.True or false: a dull brick reflects light well. (a) True (b) False
35. 35.🔭 What does a periscope let you do? (a) see over a wall (b) hear far sounds (c) see germs (d) see in the dark
36. 36.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
37. 37.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
38. 38.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
39. 39.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) turmeric powder (c) a pencil (d) a ruler
40. 40.🧺 Which of these is needed for the periscope? (a) yeast (b) sticky tape (c) turmeric powder (d) a balloon

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