Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 693 · 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 cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) only darkness (d) a rainbow
2. 2.🔭 Which of these reflects light well? (a) a shiny steel plate (b) a dull brick (c) a rough wooden board (d) black cloth
3. 3.🔭 How many times does light bounce off a mirror in a simple periscope?
4. 4.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) a rough wooden board (d) aluminium foil
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) sticky tape (d) a magnet
6. 6.🔭 What does a periscope let you do? (a) hear far sounds (b) see germs (c) see over a wall (d) see in the dark
7. 7.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) still clear water (d) a dull brick
8. 8.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
9. 9.True or false: a rough wooden board reflects light well. (a) False (b) True
10. 10.True or false: a pencil is not needed for the periscope. (a) True (b) False
11. 11.⚖️ 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
12. 12.📘 Light bouncing off a mirror is called ___. (a) reflection (b) refraction (c) magnetism (d) evaporation
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a ruler (d) yeast
14. 14.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
15. 15.True or false: a dull brick reflects light well. (a) True (b) False
16. 16.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) vinegar (d) two small mirrors
18. 18.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a magnet (c) sticky tape (d) a balloon
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) turmeric powder (c) a pencil (d) a ruler
20. 20.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) black cloth (d) still clear water
21. 21.🔍 Which is the odd one out? (a) dark soil (b) still clear water (c) a shiny steel plate (d) aluminium foil
22. 22.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
23. 23.True or false: a pencil is needed for the periscope. (a) True (b) False
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) the angle of the mirrors (c) the same carton (d) how clear the view is
25. 25.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) big wall mirrors (c) loose glass panes (d) broken glass bits
26. 26.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) black cloth (d) a mirror
27. 27.True or false: still clear water reflects light poorly. (a) True (b) False
28. 28.True or false: black cloth reflects light poorly. (a) False (b) True
29. 29.True or false: still clear water reflects light well. (a) True (b) False
30. 30.True or false: black cloth reflects light well. (a) True (b) False
31. 31.True or false: a mirror reflects light well. (a) True (b) False
32. 32.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it can float (c) so it looks shiny (d) so light reaches the eye
33. 33.🧺 Which of these is needed for the periscope? (a) a balloon (b) vinegar (c) a magnet (d) a pencil
34. 34.True or false: a dull brick reflects light poorly. (a) True (b) False
35. 35.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) the Sun (c) a friend’s toy (d) a wall
36. 36.True or false: a balloon is not needed for the periscope. (a) False (b) True
37. 37.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
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.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
40. 40.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed

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