Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 104 · 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 well? (a) dark soil (b) a rough wooden board (c) still clear water (d) a dull brick
2. 2.True or false: black cloth reflects light poorly. (a) True (b) False
3. 3.🧺 Which of these is needed for the periscope? (a) a balloon (b) a battery cell (c) a magnet (d) a ruler
4. 4.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
6. 6.⚖️ 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 same mirrors (c) the angle of the mirrors (d) how clear the view is
7. 7.True or false: a dull brick reflects light well. (a) False (b) True
8. 8.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) a dull brick (d) a shiny steel plate
9. 9.🧺 Which of these is needed for the periscope? (a) vinegar (b) sticky tape (c) yeast (d) a balloon
10. 10.🧺 Which of these is needed for the periscope? (a) yeast (b) an empty juice carton (c) turmeric powder (d) a magnet
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) yeast (c) two small mirrors (d) sticky tape
12. 12.True or false: aluminium foil reflects light well. (a) False (b) True
13. 13.🔭 How many mirrors does a simple periscope use?
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 same light
15. 15.🔍 Which is the odd one out? (a) still clear water (b) black cloth (c) a shiny steel plate (d) aluminium foil
16. 16.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) much bigger (d) flipped left to right
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a balloon (c) an empty juice carton (d) a ruler
18. 18.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
19. 19.🔭 How many times does light bounce off a mirror in a simple periscope?
20. 20.True or false: a magnet is needed for the periscope. (a) True (b) False
21. 21.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
22. 22.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
23. 23.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
24. 24.True or false: two small mirrors is needed for the periscope. (a) False (b) True
25. 25.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 45 degrees (c) 90 degrees (d) 180 degrees
26. 26.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
27. 27.True or false: a rough wooden board reflects light poorly. (a) False (b) True
28. 28.True or false: yeast is not needed for the periscope. (a) False (b) True
29. 29.🔭 Which of these reflects light poorly? (a) a mirror (b) a rough wooden board (c) a shiny steel plate (d) still clear water
30. 30.🔭 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
31. 31.⚖️ 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 change it (b) we measure it (c) we keep it the same
32. 32.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
33. 33.⚖️ 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
34. 34.🔮 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
35. 35.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
36. 36.🔍 Which is the odd one out? (a) aluminium foil (b) a dull brick (c) a rough wooden board (d) black cloth
37. 37.🔍 Which is the odd one out? (a) black cloth (b) a mirror (c) a rough wooden board (d) a dull brick
38. 38.⚖️ 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 same mirrors (c) the angle of the mirrors (d) the same carton
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) a ruler (c) two small mirrors (d) an empty juice carton
40. 40.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up

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