Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 509 · 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.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) a ruler (c) two small mirrors (d) a pencil
3. 3.⚖️ 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
4. 4.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) still clear water (d) dark soil
5. 5.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) yeast (c) an empty juice carton (d) a ruler
6. 6.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) two pictures (d) only darkness
7. 7.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
8. 8.⚖️ 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 mirrors
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) an empty juice carton (c) a pencil (d) sticky tape
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) turmeric powder (c) an empty juice carton (d) a ruler
11. 11.⚖️ 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 keep it the same (b) we measure it (c) we change it
12. 12.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
13. 13.True or false: a shiny steel plate reflects light well. (a) True (b) False
14. 14.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
15. 15.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) a mirror (d) a rough wooden board
16. 16.🔭 How many mirrors does a simple periscope use?
17. 17.⚖️ 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) the same mirrors (c) how clear the view is
18. 18.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
19. 19.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) big wall mirrors (d) broken glass bits
20. 20.⚖️ 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 object we look at
21. 21.⚖️ 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
22. 22.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a shiny steel plate (c) black cloth (d) a mirror
23. 23.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) a rough wooden board (d) still clear water
24. 24.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
25. 25.🔭 Which of these reflects light well? (a) a mirror (b) a rough wooden board (c) a dull brick (d) black cloth
26. 26.True or false: a pencil is not needed for the periscope. (a) True (b) False
27. 27.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) to make it heavy (c) so light reaches the eye (d) so it looks shiny
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the angle of the mirrors”? (a) we change it (b) we measure it (c) we keep it the same
29. 29.True or false: turmeric powder is needed for the periscope. (a) False (b) True
30. 30.🔭 How many times does light bounce off a mirror in a simple periscope?
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) the object we look at (c) how clear the view is (d) the angle of the mirrors
32. 32.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) flipped left to right (d) upside down only
33. 33.True or false: a mirror reflects light poorly. (a) False (b) True
34. 34.True or false: a rough wooden board reflects light poorly. (a) True (b) False
35. 35.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 45 degrees (c) 10 degrees (d) 90 degrees
36. 36.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
37. 37.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
38. 38.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
39. 39.True or false: vinegar is needed for the periscope. (a) True (b) False
40. 40.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a magnet (c) a balloon (d) a ruler

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