Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 23 · 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 vinegar for the periscope? (a) not needed (b) needed
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a magnet (d) a ruler
3. 3.True or false: a balloon is needed for the periscope. (a) True (b) False
4. 4.🔭 Which of these reflects light poorly? (a) black cloth (b) aluminium foil (c) a shiny steel plate (d) a mirror
5. 5.⚖️ 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 light (b) the same mirrors (c) the same carton (d) the angle of the mirrors
6. 6.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) sticky tape (d) yeast
7. 7.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) a mirror (d) a rough wooden board
8. 8.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
9. 9.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it can float (c) so it looks shiny (d) to make it heavy
10. 10.🔭 Who uses a periscope to look above the water? (a) a baker (b) a farmer (c) a submarine crew (d) a pilot in a plane
11. 11.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a wall (c) a tree (d) a friend’s toy
12. 12.🔭 How many times does light bounce off a mirror in a simple periscope?
13. 13.True or false: a rough wooden board reflects light poorly. (a) True (b) False
14. 14.⚖️ 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 object we look at
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) the object we look at (c) the same mirrors (d) how clear the view is
16. 16.True or false: dark soil reflects light well. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) aluminium foil (d) dark soil
18. 18.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
19. 19.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) vinegar (d) two small mirrors
21. 21.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a pencil (c) two small mirrors (d) a battery cell
22. 22.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) nothing at all (d) the ground
23. 23.⚖️ 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) True (b) False
24. 24.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
25. 25.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
26. 26.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) a dull brick (d) a shiny steel plate
27. 27.True or false: vinegar is needed for the periscope. (a) True (b) False
28. 28.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 180 degrees (c) 90 degrees (d) 10 degrees
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we measure it (c) we keep it the same
30. 30.🔭 How many mirrors does a simple periscope use?
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) a ruler (c) two small mirrors (d) sticky tape
32. 32.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) black cloth (d) still clear water
33. 33.True or false: a ruler is not needed for the periscope. (a) True (b) False
34. 34.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) turmeric powder (c) yeast (d) a magnet
35. 35.True or false: a dull brick reflects light well. (a) False (b) True
36. 36.🔭 Does a rough wooden board 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? True or false: the same light is kept the same. (a) False (b) True
38. 38.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
39. 39.🧺 Which of these is not needed for the periscope? (a) turmeric powder (b) a ruler (c) an empty juice carton (d) two small mirrors
40. 40.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed

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