Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 946 · 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.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) dark soil (d) a mirror
2. 2.⚖️ 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) True (b) False
3. 3.🧺 Which of these is needed for the periscope? (a) vinegar (b) a balloon (c) a magnet (d) two small mirrors
4. 4.🔮 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
5. 5.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) a shiny steel plate (d) dark soil
6. 6.True or false: turmeric powder is needed for the periscope. (a) False (b) True
7. 7.True or false: a dull brick reflects light poorly. (a) False (b) True
8. 8.⚖️ 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
9. 9.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
10. 10.🔭 How many mirrors does a simple periscope use?
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) the angle of the mirrors (c) how clear the view is
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we keep it the same (c) we change it
13. 13.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
14. 14.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a wall (c) a tree (d) a friend’s toy
15. 15.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) big wall mirrors (d) loose glass panes
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) False (b) True
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
18. 18.🔭 Which of these reflects light well? (a) still clear water (b) dark soil (c) a rough wooden board (d) a dull brick
19. 19.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) only darkness (d) two pictures
20. 20.True or false: a pencil is not needed for the periscope. (a) True (b) False
21. 21.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) a grown-up (d) nobody needs to
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a battery cell (c) a ruler (d) two small mirrors
23. 23.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) nothing at all (c) only short walls (d) taller walls
24. 24.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a pencil (c) turmeric powder (d) a balloon
25. 25.🔭 Which of these reflects light poorly? (a) still clear water (b) black cloth (c) a mirror (d) a shiny steel plate
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) how clear the view is (c) the same light (d) the same carton
27. 27.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) vinegar (c) yeast (d) a magnet
28. 28.True or false: dark soil reflects light well. (a) False (b) True
29. 29.True or false: a mirror reflects light poorly. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) still clear water (b) a rough wooden board (c) aluminium foil (d) a shiny steel plate
31. 31.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) True (b) False
33. 33.True or false: aluminium foil reflects light well. (a) False (b) True
34. 34.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
35. 35.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
36. 36.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
37. 37.⚖️ 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
38. 38.True or false: black cloth reflects light poorly. (a) False (b) True
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
40. 40.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a ruler (c) a balloon (d) sticky tape

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