Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 161 · 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) sticky tape (b) a balloon (c) two small mirrors (d) a ruler
2. 2.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
3. 3.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) the same light (c) how clear the view is
5. 5.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
6. 6.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) still clear water (d) a dull brick
7. 7.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) flipped left to right (c) in colour (d) much bigger
8. 8.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see in the dark (d) see over a wall
9. 9.True or false: a battery cell is needed for the periscope. (a) False (b) True
10. 10.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
11. 11.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
12. 12.True or false: a dull brick reflects light well. (a) False (b) True
13. 13.⚖️ 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
14. 14.🔍 Which is the odd one out? (a) black cloth (b) a shiny steel plate (c) a mirror (d) aluminium foil
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
16. 16.⚖️ 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 keep it the same (c) we change it
17. 17.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
18. 18.⚖️ 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) the same light (c) the same mirrors (d) the angle of the mirrors
19. 19.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) broken glass bits (d) big wall mirrors
20. 20.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) a dull brick (d) still clear water
21. 21.⚖️ 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 measure it (c) we keep it the same
22. 22.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) the Sun (d) a tree
23. 23.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) a mirror (d) dark soil
24. 24.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) still clear water (d) dark soil
25. 25.🔭 How many times does light bounce off a mirror in a simple periscope?
26. 26.🧺 Which of these is needed for the periscope? (a) a battery cell (b) yeast (c) a magnet (d) an empty juice carton
27. 27.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
28. 28.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a farmer (c) a submarine crew (d) a baker
29. 29.🔍 Which is the odd one out? (a) black cloth (b) aluminium foil (c) a dull brick (d) a rough wooden board
30. 30.True or false: sticky tape is not needed for the periscope. (a) True (b) False
31. 31.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) vinegar (d) sticky tape
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) an empty juice carton (d) a magnet
34. 34.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) nothing at all (c) taller walls (d) only short walls
35. 35.🔭 Which of these reflects light poorly? (a) a dull brick (b) still clear water (c) aluminium foil (d) a shiny steel plate
36. 36.True or false: a pencil is not needed for the periscope. (a) True (b) False
37. 37.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
38. 38.True or false: a mirror reflects light poorly. (a) True (b) False
39. 39.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so light reaches the eye (c) to make it heavy (d) so it looks shiny
40. 40.🔍 Which is the odd one out? (a) dark soil (b) a mirror (c) a shiny steel plate (d) aluminium foil

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