Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 744 · 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.True or false: yeast is needed for the periscope. (a) False (b) True
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) sticky tape (d) a balloon
3. 3.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) big wall mirrors (d) broken glass bits
4. 4.🧺 Which of these is needed for the periscope? (a) vinegar (b) a magnet (c) two small mirrors (d) a battery cell
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) yeast (c) sticky tape (d) an empty juice carton
6. 6.🔭 How many mirrors does a simple periscope use?
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same carton (b) the same mirrors (c) how clear the view is (d) the object we look at
8. 8.⚖️ 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 same carton (c) the angle of the mirrors
9. 9.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) a dull brick (d) a mirror
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the angle of the mirrors”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) a ruler (d) vinegar
12. 12.🔭 How many times does light bounce off a mirror in a simple periscope?
13. 13.True or false: a dull brick reflects light well. (a) False (b) True
14. 14.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
15. 15.True or false: sticky tape is not needed for the periscope. (a) True (b) False
16. 16.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) flipped left to right (d) upside down only
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) two small mirrors (c) a ruler (d) a pencil
18. 18.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
19. 19.⚖️ 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 keep it the same (c) we measure it
20. 20.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a tree (c) a wall (d) a friend’s toy
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) black cloth (b) still clear water (c) a shiny steel plate (d) aluminium foil
23. 23.⚖️ 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
24. 24.True or false: a magnet is needed for the periscope. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) dark soil (b) a rough wooden board (c) black cloth (d) aluminium foil
26. 26.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) only darkness (d) a brighter view
27. 27.🧺 Which of these is not needed for the periscope? (a) a pencil (b) sticky tape (c) turmeric powder (d) two small mirrors
28. 28.True or false: two small mirrors is needed for the periscope. (a) False (b) True
29. 29.⚖️ 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
30. 30.True or false: a rough wooden board reflects light poorly. (a) True (b) False
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) two small mirrors (c) sticky tape (d) an empty juice carton
32. 32.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) a ruler (d) a battery cell
33. 33.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) a grown-up (d) nobody needs to
34. 34.⚖️ 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
35. 35.🧺 Which of these is needed for the periscope? (a) a balloon (b) a magnet (c) sticky tape (d) turmeric powder
36. 36.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) a dull brick (d) a shiny steel plate
37. 37.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we change it (c) we keep it the same
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) black cloth (b) a shiny steel plate (c) a rough wooden board (d) a dull brick

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