Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 576 · 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.🔭 How many times does light bounce off a mirror in a simple periscope?
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a balloon (c) sticky tape (d) an empty juice carton
3. 3.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
4. 4.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
5. 5.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) plastic safety mirrors (c) loose glass panes (d) big wall mirrors
6. 6.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) in colour (d) flipped left to right
7. 7.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
8. 8.True or false: yeast is not needed for the periscope. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) black cloth (b) a mirror (c) a rough wooden board (d) dark soil
10. 10.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
11. 11.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
12. 12.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
13. 13.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
14. 14.🔭 Which of these reflects light well? (a) a dull brick (b) still clear water (c) black cloth (d) dark soil
15. 15.True or false: a mirror reflects light well. (a) False (b) True
16. 16.True or false: a magnet is needed for the periscope. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) aluminium foil (b) black cloth (c) a mirror (d) a shiny steel plate
18. 18.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) taller walls (d) only short walls
19. 19.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
20. 20.True or false: a dull brick reflects light poorly. (a) False (b) True
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) yeast (d) an empty juice carton
22. 22.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 90 degrees (c) 45 degrees (d) 10 degrees
23. 23.⚖️ 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 change it (c) we keep it the same
24. 24.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
25. 25.🧺 Which of these is not needed for the periscope? (a) a ruler (b) vinegar (c) two small mirrors (d) sticky tape
26. 26.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) the Sun (c) a wall (d) a tree
27. 27.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.True or false: aluminium foil reflects light well. (a) False (b) True
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) False (b) True
30. 30.True or false: a ruler is needed for the periscope. (a) True (b) False
31. 31.🔭 How many mirrors does a simple periscope use?
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) sticky tape (d) a battery cell
33. 33.⚖️ 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 object we look at (c) the angle of the mirrors (d) the same light
34. 34.🔮 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
35. 35.True or false: a pencil is not needed for the periscope. (a) False (b) True
36. 36.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
37. 37.True or false: still clear water reflects light well. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) a mirror (b) a dull brick (c) still clear water (d) a shiny steel plate
39. 39.🔍 Which is the odd one out? (a) dark soil (b) a rough wooden board (c) a dull brick (d) still clear water
40. 40.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) black cloth (d) aluminium foil

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