Periscope STEM Project Worksheet

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

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