Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 20 · 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 is needed for the periscope? (a) a battery cell (b) a magnet (c) a ruler (d) vinegar
2. 2.🔍 Which is the odd one out? (a) a dull brick (b) a mirror (c) black cloth (d) dark soil
3. 3.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a tree (c) a wall (d) a friend’s toy
4. 4.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a baker (c) a submarine crew (d) a farmer
5. 5.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
6. 6.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a ruler (c) sticky tape (d) a magnet
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) an empty juice carton (d) a balloon
8. 8.⚖️ 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
9. 9.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) False (b) True
11. 11.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
12. 12.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
13. 13.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a balloon (c) sticky tape (d) a pencil
14. 14.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) a shiny steel plate (d) a dull brick
15. 15.True or false: two small mirrors is needed for the periscope. (a) False (b) True
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) the angle of the mirrors (c) how clear the view is
17. 17.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) True (b) False
19. 19.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a dull brick (c) still clear water (d) a mirror
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) False (b) True
21. 21.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) in colour (d) flipped left to right
22. 22.🔭 How many times does light bounce off a mirror in a simple periscope?
23. 23.True or false: a mirror reflects light well. (a) False (b) True
24. 24.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) dark soil (d) a shiny steel plate
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the object we look at (b) the angle of the mirrors (c) how clear the view is
26. 26.⚖️ 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 light (b) the angle of the mirrors (c) the object we look at (d) how clear the view is
27. 27.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) a dull brick (d) aluminium foil
28. 28.🔭 What does a periscope let you do? (a) see over a wall (b) hear far sounds (c) see in the dark (d) see germs
29. 29.True or false: a dull brick reflects light well. (a) True (b) False
30. 30.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 45 degrees (d) 180 degrees
31. 31.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) yeast (c) a balloon (d) sticky tape
32. 32.⚖️ 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
33. 33.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) a rough wooden board (d) still clear water
34. 34.🔍 Which is the odd one out? (a) black cloth (b) aluminium foil (c) still clear water (d) a mirror
35. 35.True or false: black cloth reflects light poorly. (a) True (b) False
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) sticky tape (c) two small mirrors (d) a pencil
37. 37.⚖️ 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
38. 38.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) plastic safety mirrors (c) broken glass bits (d) loose glass panes
39. 39.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
40. 40.🔭 Which of these reflects light well? (a) a rough wooden board (b) a mirror (c) black cloth (d) a dull brick

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