Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 614 · 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 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
2. 2.True or false: a battery cell is needed for the periscope. (a) False (b) True
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) an empty juice carton (c) two small mirrors (d) sticky tape
4. 4.🔭 How many times does light bounce off a mirror in a simple periscope?
5. 5.🔍 Which is the odd one out? (a) aluminium foil (b) dark soil (c) a shiny steel plate (d) a mirror
6. 6.🔭 Which of these reflects light well? (a) dark soil (b) a shiny steel plate (c) black cloth (d) a dull brick
7. 7.True or false: aluminium foil reflects light poorly. (a) False (b) True
8. 8.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
9. 9.🔮 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
10. 10.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) flipped left to right (d) much bigger
11. 11.🧺 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 balloon
12. 12.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
13. 13.🧺 Which of these is not needed for the periscope? (a) a ruler (b) sticky tape (c) a pencil (d) vinegar
14. 14.⚖️ 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
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we keep it the same (c) we measure it
16. 16.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a dull brick (c) a mirror (d) aluminium foil
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) two small mirrors (c) a ruler (d) sticky tape
18. 18.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) plastic safety mirrors (d) big wall mirrors
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a ruler (d) a battery cell
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “how clear the view is”? (a) we measure it (b) we keep it the same (c) we change it
21. 21.True or false: a pencil is not needed for the periscope. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) a dull brick (d) still clear water
23. 23.⚖️ 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) how clear the view is (c) the object we look at (d) the same light
24. 24.🧺 Which of these is needed for the periscope? (a) vinegar (b) a pencil (c) yeast (d) turmeric powder
25. 25.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) sticky tape (d) turmeric powder
26. 26.⚖️ 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
27. 27.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) a balloon (d) a ruler
28. 28.True or false: a battery cell is not needed for the periscope. (a) True (b) False
29. 29.🔭 How many mirrors does a simple periscope use?
30. 30.True or false: vinegar is needed for the periscope. (a) True (b) False
31. 31.True or false: still clear water reflects light poorly. (a) False (b) True
32. 32.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) a tree (d) the Sun
33. 33.🔭 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
34. 34.True or false: a mirror reflects light poorly. (a) False (b) True
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) True (b) False
36. 36.⚖️ 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 light (b) the object we look at (c) the angle of the mirrors (d) the same carton
37. 37.True or false: a dull brick reflects light well. (a) True (b) False
38. 38.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
39. 39.True or false: black cloth reflects light well. (a) True (b) False
40. 40.⚖️ 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

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