Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 48 · 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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a ruler (d) a balloon
2. 2.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) aluminium foil (d) a rough wooden board
3. 3.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) to make it heavy (c) so it can float (d) so light reaches the eye
4. 4.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) only darkness (d) a brighter view
5. 5.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) a ruler (d) yeast
6. 6.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a magnet (c) two small mirrors (d) an empty juice carton
7. 7.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) a wall (d) the Sun
8. 8.⚖️ 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
9. 9.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) broken glass bits (d) big wall mirrors
10. 10.True or false: a ruler is needed for the periscope. (a) True (b) False
11. 11.⚖️ 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
12. 12.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) still clear water (d) a dull brick
13. 13.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
14. 14.True or false: a shiny steel plate reflects light well. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) a dull brick (b) still clear water (c) black cloth (d) dark soil
16. 16.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) the angle of the mirrors (c) the same light (d) how clear the view is
18. 18.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
20. 20.🔭 Which of these reflects light well? (a) a rough wooden board (b) a dull brick (c) a mirror (d) black cloth
21. 21.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
22. 22.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) reflection (d) refraction
23. 23.🔭 Which of these reflects light poorly? (a) a mirror (b) a rough wooden board (c) a shiny steel plate (d) still clear water
24. 24.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) taller walls (c) only short walls (d) the ground
25. 25.⚖️ 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 angle of the mirrors (c) the same mirrors
26. 26.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a pencil (c) sticky tape (d) turmeric powder
27. 27.⚖️ 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 same carton (c) the object we look at (d) the angle of the mirrors
28. 28.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
29. 29.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
30. 30.⚖️ 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
31. 31.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) black cloth (d) still clear water
32. 32.🔍 Which is the odd one out? (a) black cloth (b) a mirror (c) aluminium foil (d) still clear water
33. 33.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
35. 35.True or false: a dull brick reflects light well. (a) True (b) False
36. 36.True or false: vinegar is needed for the periscope. (a) False (b) True
37. 37.True or false: aluminium foil reflects light poorly. (a) True (b) False
38. 38.True or false: yeast is needed for the periscope. (a) True (b) False
39. 39.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
40. 40.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly

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