Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 393 · 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.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) two small mirrors (c) a ruler (d) sticky tape
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the object we look at”? (a) we measure it (b) we keep it the same (c) we change it
4. 4.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) a dull brick (d) a shiny steel plate
5. 5.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) a mirror (d) black cloth
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the angle of the mirrors (c) the same carton (d) the same light
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) a ruler (c) a pencil (d) two small mirrors
9. 9.⚖️ 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
10. 10.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a pilot in a plane (c) a submarine crew (d) a baker
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) a balloon (d) an empty juice carton
12. 12.🔍 Which is the odd one out? (a) still clear water (b) dark soil (c) a mirror (d) aluminium foil
13. 13.🔍 Which is the odd one out? (a) a rough wooden board (b) dark soil (c) a mirror (d) black cloth
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) the same carton (c) how clear the view is (d) the same mirrors
15. 15.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) broken glass bits (d) big wall mirrors
16. 16.True or false: vinegar is needed for the periscope. (a) True (b) False
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) turmeric powder (d) two small mirrors
18. 18.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
19. 19.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
20. 20.⚖️ 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 change it (b) we keep it the same (c) we measure it
21. 21.🔍 Which is the odd one out? (a) a dull brick (b) a shiny steel plate (c) aluminium foil (d) a mirror
22. 22.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) upside down only (d) flipped left to right
23. 23.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
24. 24.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so it can float (c) to make it heavy (d) so light reaches the eye
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we measure it (c) we change it
26. 26.🔭 Which of these reflects light well? (a) a rough wooden board (b) a dull brick (c) black cloth (d) a mirror
27. 27.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.🧺 Which of these is not needed for the periscope? (a) a ruler (b) sticky tape (c) a pencil (d) a battery cell
29. 29.True or false: a rough wooden board reflects light well. (a) True (b) False
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the object we look at (b) how clear the view is (c) the angle of the mirrors
31. 31.🔭 How many mirrors does a simple periscope use?
32. 32.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) black cloth (d) a shiny steel plate
33. 33.🔭 How many times does light bounce off a mirror in a simple periscope?
34. 34.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
35. 35.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a balloon (c) a ruler (d) two small mirrors
36. 36.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
37. 37.True or false: a pencil is needed for the periscope. (a) False (b) True
38. 38.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
39. 39.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
40. 40.⚖️ 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

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