Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 705 · 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? What do we do with “the object we look at”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) an empty juice carton (d) a magnet
3. 3.🔭 Which of these reflects light well? (a) a rough wooden board (b) a mirror (c) black cloth (d) a dull brick
4. 4.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) upside down only (d) in colour
5. 5.🧺 Which of these is not needed for the periscope? (a) a ruler (b) an empty juice carton (c) yeast (d) two small mirrors
6. 6.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a brighter view (c) a rainbow (d) two pictures
7. 7.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a balloon (d) two small mirrors
9. 9.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) taller walls (d) nothing at all
10. 10.⚖️ 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 angle of the mirrors (c) how clear the view is (d) the same light
11. 11.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
12. 12.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a baker (c) a farmer (d) a pilot in a plane
13. 13.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) still clear water (d) a dull brick
14. 14.🔭 What does a periscope let you do? (a) hear far sounds (b) see in the dark (c) see germs (d) see over a wall
15. 15.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) aluminium foil (d) a rough wooden board
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) how clear the view is (c) the angle of the mirrors
17. 17.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
18. 18.🛟 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
19. 19.True or false: a magnet is not needed for the periscope. (a) True (b) False
20. 20.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
21. 21.True or false: a mirror reflects light well. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) dark soil (d) a mirror
23. 23.⚖️ 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
24. 24.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
25. 25.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
26. 26.🔭 How many mirrors does a simple periscope use?
27. 27.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) a dull brick (d) aluminium foil
28. 28.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) still clear water (d) black cloth
29. 29.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
30. 30.True or false: a mirror reflects light poorly. (a) True (b) False
31. 31.True or false: a battery cell is not needed for the periscope. (a) False (b) True
32. 32.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
33. 33.⚖️ 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
34. 34.🧺 Which of these is needed for the periscope? (a) sticky tape (b) vinegar (c) a battery cell (d) a magnet
35. 35.⚖️ 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 angle of the mirrors (c) the object we look at (d) the same light
36. 36.🔍 Which is the odd one out? (a) a shiny steel plate (b) black cloth (c) a dull brick (d) dark soil
37. 37.True or false: yeast is needed for the periscope. (a) True (b) False
38. 38.True or false: a shiny steel plate reflects light well. (a) True (b) False
39. 39.True or false: a rough wooden board reflects light poorly. (a) False (b) True
40. 40.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) nobody needs to (c) a friend who is running (d) the youngest child

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