Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 729 · 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 pencil for the periscope? (a) needed (b) not needed
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a battery cell (c) sticky tape (d) an empty juice carton
3. 3.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
4. 4.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
5. 5.True or false: dark soil reflects light well. (a) False (b) True
6. 6.🧺 Which of these is needed for the periscope? (a) vinegar (b) a pencil (c) yeast (d) a magnet
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) turmeric powder (d) sticky tape
8. 8.🔭 Which of these reflects light well? (a) black cloth (b) still clear water (c) dark soil (d) a rough wooden board
9. 9.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) magnetism (d) reflection
10. 10.True or false: a magnet is needed for the periscope. (a) True (b) False
11. 11.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a rough wooden board (c) a mirror (d) aluminium foil
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) two small mirrors (d) yeast
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) vinegar (c) two small mirrors (d) a ruler
14. 14.True or false: still clear water reflects light poorly. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) aluminium foil (d) a rough wooden board
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) False (b) True
17. 17.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
18. 18.True or false: vinegar is not needed for the periscope. (a) False (b) True
19. 19.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
20. 20.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
21. 21.⚖️ 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 mirrors (b) the same carton (c) how clear the view is (d) the angle of the mirrors
22. 22.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) big wall mirrors (d) loose glass panes
23. 23.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a friend’s toy (c) a tree (d) a wall
24. 24.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
25. 25.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a pilot in a plane (c) a baker (d) a submarine crew
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) two small mirrors (d) a balloon
27. 27.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.🔭 Which of these reflects light well? (a) aluminium foil (b) a dull brick (c) a rough wooden board (d) black cloth
29. 29.🔭 How many times does light bounce off a mirror in a simple periscope?
30. 30.True or false: sticky tape is needed for the periscope. (a) True (b) False
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) True (b) False
32. 32.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) upside down only (d) in colour
33. 33.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we change it (c) we measure it
35. 35.🔭 How many mirrors does a simple periscope use?
36. 36.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) the angle of the mirrors (c) the same light (d) how clear the view is
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the angle of the mirrors”? (a) we measure it (b) we change it (c) we keep it the same
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) an empty juice carton (c) two small mirrors (d) a pencil
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) how clear the view is (c) the same light

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