Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 594 · 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) black cloth (c) still clear water (d) a rough wooden board
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) sticky tape (d) a balloon
3. 3.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
4. 4.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) still clear water (d) black cloth
5. 5.🔭 How many mirrors does a simple periscope use?
6. 6.True or false: aluminium foil reflects light well. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) dark soil (d) a shiny steel plate
8. 8.🔭 What does a periscope let you do? (a) see over a wall (b) see germs (c) hear far sounds (d) see in the dark
9. 9.True or false: a rough wooden board reflects light poorly. (a) False (b) True
10. 10.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) nobody needs to (d) the youngest child
11. 11.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) upside down only (d) flipped left to right
12. 12.⚖️ 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 carton (b) how clear the view is (c) the angle of the mirrors (d) the object we look at
13. 13.🔭 How many times does light bounce off a mirror in a simple periscope?
14. 14.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) dark soil (d) a mirror
15. 15.True or false: yeast is not needed for the periscope. (a) False (b) True
16. 16.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
18. 18.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same light (c) the object we look at (d) the angle of the mirrors
20. 20.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a pencil (c) turmeric powder (d) sticky tape
21. 21.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
22. 22.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we change it (c) we keep it the same
24. 24.🔍 Which is the odd one out? (a) still clear water (b) dark soil (c) black cloth (d) a dull brick
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) the angle of the mirrors (c) how clear the view is
26. 26.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a magnet (c) sticky tape (d) two small mirrors
27. 27.True or false: sticky tape is not needed for the periscope. (a) True (b) False
28. 28.True or false: a pencil is not needed for the periscope. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) a shiny steel plate (b) a rough wooden board (c) aluminium foil (d) a mirror
30. 30.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) plastic safety mirrors (d) broken glass bits
31. 31.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) only short walls (c) taller walls (d) nothing at all
32. 32.🔍 Which is the odd one out? (a) a rough wooden board (b) aluminium foil (c) a dull brick (d) black cloth
33. 33.True or false: a shiny steel plate reflects light well. (a) False (b) True
34. 34.⚖️ 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 change it (c) we keep it the same
35. 35.True or false: a magnet is not needed for the periscope. (a) True (b) False
36. 36.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
37. 37.True or false: vinegar is not needed for the periscope. (a) True (b) False
38. 38.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
39. 39.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a pilot in a plane (c) a baker (d) a submarine crew
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) two small mirrors (c) an empty juice carton (d) sticky tape

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