Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 925 · 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.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a battery cell (c) a pencil (d) two small mirrors
3. 3.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) broken glass bits (d) plastic safety mirrors
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) an empty juice carton (d) a magnet
5. 5.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
6. 6.True or false: a balloon is not needed for the periscope. (a) False (b) True
7. 7.⚖️ 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
8. 8.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a ruler (c) an empty juice carton (d) a balloon
9. 9.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) nothing at all (d) the ground
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the object we look at (b) how clear the view is (c) the angle of the mirrors
11. 11.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) still clear water (d) a rough wooden board
12. 12.🔭 How many mirrors does a simple periscope use?
13. 13.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
14. 14.🔭 Which of these reflects light poorly? (a) still clear water (b) a shiny steel plate (c) a mirror (d) dark soil
15. 15.🔭 What does a periscope let you do? (a) hear far sounds (b) see over a wall (c) see in the dark (d) see germs
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) a pencil (d) a balloon
17. 17.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) a friend’s toy (d) the Sun
18. 18.True or false: black cloth reflects light well. (a) True (b) False
19. 19.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
20. 20.🔍 Which is the odd one out? (a) a dull brick (b) a mirror (c) a rough wooden board (d) dark soil
21. 21.True or false: a magnet is needed for the periscope. (a) True (b) False
22. 22.True or false: a mirror reflects light poorly. (a) True (b) False
23. 23.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) aluminium foil (d) a dull brick
24. 24.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
25. 25.🔭 How many times does light bounce off a mirror in a simple periscope?
26. 26.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) a rough wooden board (d) aluminium foil
27. 27.True or false: vinegar is not needed for the periscope. (a) True (b) False
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we keep it the same (c) we measure it
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True
30. 30.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a battery cell (c) a pencil (d) sticky tape
31. 31.⚖️ 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) how clear the view is (c) the same carton
32. 32.🔍 Which is the odd one out? (a) still clear water (b) black cloth (c) aluminium foil (d) a mirror
33. 33.True or false: two small mirrors is needed for the periscope. (a) False (b) True
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) True (b) False
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) True (b) False
36. 36.⚖️ 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
37. 37.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
38. 38.🧺 Which of these is needed for the periscope? (a) vinegar (b) a balloon (c) yeast (d) two small mirrors
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) a pencil (d) turmeric powder
40. 40.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) yeast (c) an empty juice carton (d) sticky tape

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