Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 386 · 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 is the odd one out? (a) still clear water (b) a shiny steel plate (c) black cloth (d) aluminium foil
2. 2.🔭 How many mirrors does a simple periscope use?
3. 3.True or false: a mirror reflects light well. (a) True (b) False
4. 4.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
5. 5.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) broken glass bits (d) plastic safety mirrors
6. 6.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a tree (c) a wall (d) a friend’s toy
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) True (b) False
8. 8.⚖️ 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) False (b) True
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) True (b) False
10. 10.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
11. 11.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) sticky tape (d) vinegar
12. 12.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) yeast (c) an empty juice carton (d) two small mirrors
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) two small mirrors (c) an empty juice carton (d) sticky tape
15. 15.⚖️ 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
16. 16.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) black cloth (d) a mirror
17. 17.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
18. 18.🔍 Which is the odd one out? (a) a dull brick (b) a rough wooden board (c) a mirror (d) black cloth
19. 19.⚖️ 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
20. 20.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) in colour (d) upside down only
21. 21.⚖️ 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 mirrors (b) the object we look at (c) the same light (d) the angle of the mirrors
22. 22.True or false: dark soil reflects light poorly. (a) True (b) False
23. 23.True or false: a mirror reflects light poorly. (a) True (b) False
24. 24.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) a dull brick (d) a shiny steel plate
25. 25.⚖️ 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
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) sticky tape (c) a ruler (d) two small mirrors
27. 27.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) two small mirrors (c) sticky tape (d) a ruler
28. 28.⚖️ 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 same carton (c) the same light (d) how clear the view is
29. 29.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
30. 30.⚖️ 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 change it (c) we measure it
31. 31.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a ruler (c) a magnet (d) sticky tape
32. 32.True or false: a battery cell is needed for the periscope. (a) False (b) True
33. 33.True or false: dark soil reflects light well. (a) True (b) False
34. 34.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) False (b) True
36. 36.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) only darkness (d) a rainbow
37. 37.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up
38. 38.⚖️ 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) False (b) True
39. 39.🔭 How many times does light bounce off a mirror in a simple periscope?
40. 40.True or false: a dull brick reflects light poorly. (a) True (b) False

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