Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 539 · 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) a ruler (b) an empty juice carton (c) a balloon (d) a pencil
2. 2.True or false: yeast is not needed for the periscope. (a) True (b) False
3. 3.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) broken glass bits (c) loose glass panes (d) plastic safety mirrors
4. 4.🔍 Which is the odd one out? (a) a rough wooden board (b) aluminium foil (c) a shiny steel plate (d) a mirror
5. 5.🧺 Which of these is needed for the periscope? (a) a ruler (b) a battery cell (c) turmeric powder (d) yeast
6. 6.🔭 How many mirrors does a simple periscope use?
7. 7.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
8. 8.⚖️ 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) how clear the view is (c) the angle of the mirrors (d) the same carton
9. 9.True or false: a battery cell is needed for the periscope. (a) False (b) True
10. 10.True or false: a rough wooden board reflects light poorly. (a) False (b) True
11. 11.🔭 Which of these reflects light poorly? (a) still clear water (b) a shiny steel plate (c) a dull brick (d) a mirror
12. 12.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
13. 13.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 180 degrees (d) 45 degrees
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) an empty juice carton (c) a pencil (d) a ruler
15. 15.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) only darkness (c) a brighter view (d) a rainbow
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we keep it the same (c) we measure it
17. 17.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a submarine crew (c) a farmer (d) a baker
18. 18.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
19. 19.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
20. 20.🔭 What does a periscope let you do? (a) see in the dark (b) see over a wall (c) hear far sounds (d) see germs
21. 21.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) much bigger (d) upside down only
22. 22.⚖️ 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 keep it the same (c) we measure it
23. 23.🧺 Which of these is not needed for the periscope? (a) vinegar (b) an empty juice carton (c) sticky tape (d) a pencil
24. 24.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) the Sun (d) a tree
25. 25.⚖️ 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 measure it (b) we change it (c) we keep it the same
26. 26.⚖️ 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 keep it the same (b) we measure it (c) we change it
27. 27.⚖️ 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
28. 28.True or false: a magnet is not needed for the periscope. (a) False (b) True
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) sticky tape (d) a battery cell
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) an empty juice carton (c) a ruler (d) two small mirrors
31. 31.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) an empty juice carton (c) a magnet (d) a ruler
32. 32.🔭 How many times does light bounce off a mirror in a simple periscope?
33. 33.True or false: turmeric powder is needed for the periscope. (a) False (b) True
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 object we look at
35. 35.True or false: sticky tape is not needed for the periscope. (a) True (b) False
36. 36.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
37. 37.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) a mirror (d) dark soil
38. 38.🔭 Which of these reflects light well? (a) a mirror (b) black cloth (c) a dull brick (d) dark soil
39. 39.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) a battery cell (d) an empty juice carton
40. 40.⚖️ 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 mirrors (d) how clear the view is

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