Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 344 · 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.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) taller walls (c) the ground (d) only short walls
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a magnet (c) a ruler (d) sticky tape
3. 3.True or false: a magnet is not needed for the periscope. (a) True (b) False
4. 4.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
5. 5.🧺 Which of these is needed for the periscope? (a) a ruler (b) a battery cell (c) a magnet (d) a balloon
6. 6.🧺 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 balloon
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) vinegar (c) two small mirrors (d) a pencil
8. 8.🔍 Which is the odd one out? (a) a rough wooden board (b) still clear water (c) a dull brick (d) dark soil
9. 9.True or false: still clear water reflects light poorly. (a) False (b) True
10. 10.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
11. 11.🔭 How many mirrors does a simple periscope use?
12. 12.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 180 degrees (d) 45 degrees
13. 13.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) a ruler (d) turmeric powder
15. 15.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) still clear water (d) dark soil
16. 16.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) to make it heavy (c) so it can float (d) so light reaches the eye
17. 17.⚖️ 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 keep it the same (c) we change it
18. 18.True or false: a shiny steel plate reflects light well. (a) True (b) False
19. 19.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) broken glass bits (d) plastic safety mirrors
20. 20.🛟 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
21. 21.True or false: a balloon is needed for the periscope. (a) True (b) False
22. 22.True or false: two small mirrors is needed for the periscope. (a) False (b) True
23. 23.True or false: a magnet is needed for the periscope. (a) True (b) False
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we measure it (c) we change it
25. 25.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) black cloth (d) still clear water
26. 26.True or false: a battery cell is needed for the periscope. (a) False (b) True
27. 27.🧺 Which of these is needed for the periscope? (a) yeast (b) a magnet (c) a battery cell (d) sticky tape
28. 28.⚖️ 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 keep it the same (c) we change it
29. 29.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
30. 30.🔭 How many times does light bounce off a mirror in a simple periscope?
31. 31.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a battery cell (c) an empty juice carton (d) a ruler
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a battery cell (c) sticky tape (d) two small mirrors
33. 33.🧺 Which of these is not needed for the periscope? (a) turmeric powder (b) a ruler (c) two small mirrors (d) an empty juice carton
34. 34.True or false: a dull brick reflects light well. (a) False (b) True
35. 35.True or false: aluminium foil reflects light well. (a) True (b) False
36. 36.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) refraction (d) reflection
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) False (b) True
38. 38.⚖️ 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 carton (b) the same mirrors (c) the angle of the mirrors (d) the object we look at
39. 39.True or false: sticky tape is needed for the periscope. (a) False (b) True
40. 40.🧺 Which of these is needed for the periscope? (a) a magnet (b) turmeric powder (c) two small mirrors (d) yeast

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