Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 942 · 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 a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
2. 2.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a rainbow (c) two pictures (d) a brighter view
3. 3.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) big wall mirrors (d) broken glass bits
4. 4.🔭 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
5. 5.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) upside down only (c) in colour (d) much bigger
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) turmeric powder (c) an empty juice carton (d) a pencil
7. 7.⚖️ 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 angle of the mirrors (c) the object we look at
8. 8.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) the youngest child (d) nobody needs to
9. 9.True or false: a shiny steel plate reflects light well. (a) True (b) False
10. 10.🧺 Which of these is needed for the periscope? (a) vinegar (b) a magnet (c) yeast (d) an empty juice carton
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we keep it the same (c) we measure it
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) yeast (d) an empty juice carton
13. 13.True or false: a ruler is needed for the periscope. (a) False (b) True
14. 14.⚖️ 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 same carton (c) how clear the view is (d) the same mirrors
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) two small mirrors (c) sticky tape (d) an empty juice carton
16. 16.True or false: a pencil is not needed for the periscope. (a) False (b) True
17. 17.⚖️ 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
18. 18.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
19. 19.🧺 Which of these is needed for the periscope? (a) a ruler (b) a battery cell (c) turmeric powder (d) vinegar
20. 20.🧺 Which of these is needed for the periscope? (a) sticky tape (b) a balloon (c) turmeric powder (d) a magnet
21. 21.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
22. 22.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
23. 23.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a submarine crew (c) a baker (d) a pilot in a plane
24. 24.🔍 Which is the odd one out? (a) a rough wooden board (b) dark soil (c) still clear water (d) a dull brick
25. 25.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
26. 26.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) only short walls (d) taller walls
27. 27.🔭 Which of these reflects light well? (a) black cloth (b) still clear water (c) dark soil (d) a rough wooden board
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) two small mirrors (d) a magnet
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) an empty juice carton (d) a balloon
30. 30.🔭 How many mirrors does a simple periscope use?
31. 31.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a shiny steel plate (c) a mirror (d) black cloth
32. 32.⚖️ 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 light
33. 33.⚖️ 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 measure it (c) we keep it the same
34. 34.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same mirrors (b) the angle of the mirrors (c) how clear the view is
37. 37.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) the Sun (c) a wall (d) a tree
38. 38.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
39. 39.True or false: sticky tape is needed for the periscope. (a) True (b) False
40. 40.True or false: a dull brick reflects light poorly. (a) False (b) True

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