Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 139 · 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? True or false: the same carton is the one thing we change. (a) False (b) True
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) a pencil
3. 3.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
4. 4.⚖️ 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 keep it the same (c) we measure it
5. 5.True or false: a magnet is needed for the periscope. (a) True (b) False
6. 6.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) big wall mirrors (d) plastic safety mirrors
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) a pencil (d) vinegar
8. 8.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
9. 9.🔭 How many times does light bounce off a mirror in a simple periscope?
10. 10.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) a brighter view (d) only darkness
11. 11.True or false: a ruler is needed for the periscope. (a) False (b) True
12. 12.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
13. 13.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a wall (c) a tree (d) a friend’s toy
14. 14.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
15. 15.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
16. 16.🔭 Which of these reflects light well? (a) black cloth (b) a shiny steel plate (c) a dull brick (d) dark soil
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) an empty juice carton (d) a balloon
18. 18.🔭 Which of these reflects light well? (a) a rough wooden board (b) a dull brick (c) black cloth (d) still clear water
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the same mirrors (c) the same light (d) the angle of the mirrors
20. 20.True or false: a dull brick reflects light well. (a) True (b) False
21. 21.True or false: a balloon is needed for the periscope. (a) False (b) True
22. 22.🔭 What does a periscope let you do? (a) see over a wall (b) hear far sounds (c) see in the dark (d) see germs
23. 23.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
24. 24.⚖️ 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) False (b) True
25. 25.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) much bigger (d) upside down only
26. 26.🧺 Which of these is needed for the periscope? (a) a balloon (b) an empty juice carton (c) a magnet (d) turmeric powder
27. 27.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.True or false: aluminium foil reflects light poorly. (a) True (b) False
29. 29.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) a shiny steel plate (d) a rough wooden board
30. 30.True or false: a pencil is not needed for the periscope. (a) True (b) False
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the same mirrors (c) the angle of the mirrors
32. 32.🔭 How many mirrors does a simple periscope use?
33. 33.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
34. 34.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) a mirror (d) black cloth
35. 35.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) dark soil (d) still clear water
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) False (b) True
37. 37.⚖️ 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
38. 38.🧺 Which of these is needed for the periscope? (a) yeast (b) turmeric powder (c) a ruler (d) a battery cell
39. 39.🧺 Which of these is needed for the periscope? (a) sticky tape (b) a balloon (c) turmeric powder (d) a battery cell
40. 40.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a farmer (c) a submarine crew (d) a baker

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