Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 742 · 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? True or false: the angle of the mirrors is what we measure. (a) True (b) False
2. 2.🛟 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
3. 3.True or false: a pencil is not needed for the periscope. (a) False (b) True
4. 4.🔭 How many times does light bounce off a mirror in a simple periscope?
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) a pencil (d) a magnet
6. 6.🔭 Which of these reflects light poorly? (a) a dull brick (b) a mirror (c) still clear water (d) aluminium foil
7. 7.🔭 Which of these reflects light well? (a) black cloth (b) still clear water (c) dark soil (d) a rough wooden board
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) two small mirrors (c) an empty juice carton (d) sticky tape
9. 9.🔭 How many mirrors does a simple periscope use?
10. 10.True or false: still clear water reflects light well. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) dark soil (b) a rough wooden board (c) aluminium foil (d) black cloth
12. 12.⚖️ 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
13. 13.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
14. 14.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a tree (d) a friend’s toy
15. 15.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) a rough wooden board (d) aluminium foil
16. 16.📘 Light bouncing off a mirror is called ___. (a) reflection (b) refraction (c) magnetism (d) evaporation
17. 17.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a baker (c) a submarine crew (d) a pilot in a plane
18. 18.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) two pictures (d) only darkness
19. 19.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
20. 20.True or false: a ruler is needed for the periscope. (a) False (b) True
21. 21.True or false: still clear water reflects light poorly. (a) True (b) False
22. 22.🧺 Which of these is needed for the periscope? (a) yeast (b) a battery cell (c) two small mirrors (d) turmeric powder
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) a pencil (d) a balloon
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we measure it (c) we change it
25. 25.True or false: vinegar is needed for the periscope. (a) True (b) False
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we keep it the same (c) we change it
27. 27.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.True or false: a rough wooden board reflects light poorly. (a) False (b) True
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.⚖️ 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 angle of the mirrors (c) the object we look at (d) the same light
31. 31.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
32. 32.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) the ground (d) taller walls
33. 33.True or false: a rough wooden board reflects light well. (a) False (b) True
34. 34.True or false: aluminium foil reflects light well. (a) False (b) True
35. 35.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
36. 36.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) aluminium foil (d) dark soil
37. 37.🧺 Which of these is needed for the periscope? (a) a ruler (b) a magnet (c) a battery cell (d) turmeric powder
38. 38.⚖️ 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
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) a pencil (d) yeast
40. 40.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to

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