Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 316 · 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.🔭 What does a periscope let you do? (a) hear far sounds (b) see germs (c) see in the dark (d) see over a wall
2. 2.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) two small mirrors (c) a pencil (d) an empty juice carton
3. 3.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
4. 4.🔭 How many mirrors does a simple periscope use?
5. 5.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) the Sun (d) a tree
6. 6.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
7. 7.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it looks shiny (c) to make it heavy (d) so it can float
8. 8.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) two small mirrors (c) an empty juice carton (d) a ruler
10. 10.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) big wall mirrors (d) broken glass bits
11. 11.⚖️ 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) False (b) True
12. 12.⚖️ 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) the object we look at (c) the same light (d) the same carton
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the object we look at”? (a) we measure it (b) we keep it the same (c) we change it
14. 14.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) upside down only (d) flipped left to right
15. 15.🧺 Which of these is not needed for the periscope? (a) yeast (b) a ruler (c) sticky tape (d) an empty juice carton
16. 16.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
17. 17.True or false: yeast is needed for the periscope. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) black cloth (d) a shiny steel plate
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) vinegar (d) an empty juice carton
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same carton (b) the object we look at (c) the same light (d) how clear the view is
21. 21.True or false: turmeric powder is needed for the periscope. (a) True (b) False
22. 22.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
23. 23.🔭 Which of these reflects light well? (a) a mirror (b) a rough wooden board (c) a dull brick (d) black cloth
24. 24.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) a grown-up (d) nobody needs to
25. 25.True or false: a balloon is not needed for the periscope. (a) True (b) False
26. 26.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) black cloth (d) still clear water
27. 27.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
28. 28.🧺 Which of these is needed for the periscope? (a) a battery cell (b) two small mirrors (c) a magnet (d) a balloon
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) yeast (c) sticky tape (d) a ruler
30. 30.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) only darkness (c) two pictures (d) a rainbow
31. 31.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
32. 32.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
33. 33.🔭 How many times does light bounce off a mirror in a simple periscope?
34. 34.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) nothing at all (c) taller walls (d) only short walls
35. 35.🔭 Which of these reflects light well? (a) dark soil (b) still clear water (c) a rough wooden board (d) black cloth
36. 36.🧺 Which of these is needed for the periscope? (a) a pencil (b) a balloon (c) turmeric powder (d) a magnet
37. 37.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a pencil (d) a magnet
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) False (b) True
40. 40.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) reflection (c) magnetism (d) refraction

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