Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 837 · 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.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) the Sun (d) a wall
2. 2.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
3. 3.🛟 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
4. 4.⚖️ 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 same mirrors (d) the angle of the mirrors
5. 5.⚖️ 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
6. 6.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) False (b) True
8. 8.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) much bigger (d) flipped left to right
9. 9.🔭 Who uses a periscope to look above the water? (a) a baker (b) a submarine crew (c) a farmer (d) a pilot in a plane
10. 10.🔭 How many times does light bounce off a mirror in a simple periscope?
11. 11.True or false: a rough wooden board reflects light poorly. (a) False (b) True
12. 12.True or false: a pencil is not needed for the periscope. (a) False (b) True
13. 13.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a battery cell (c) a pencil (d) a ruler
15. 15.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
16. 16.⚖️ 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
17. 17.🔍 Which is the odd one out? (a) a dull brick (b) still clear water (c) black cloth (d) a rough wooden board
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we change it (c) we measure it
19. 19.⚖️ 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 angle of the mirrors (c) how clear the view is (d) the object we look at
20. 20.🧺 Which of these is not needed for the periscope? (a) a magnet (b) a ruler (c) an empty juice carton (d) a pencil
21. 21.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
22. 22.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 90 degrees (c) 10 degrees (d) 45 degrees
23. 23.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) plastic safety mirrors (d) big wall mirrors
24. 24.🔭 Which of these reflects light poorly? (a) dark soil (b) a mirror (c) still clear water (d) aluminium foil
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) a ruler (c) a pencil (d) sticky tape
26. 26.⚖️ 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 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? What do we do with “how clear the view is”? (a) we keep it the same (b) we change it (c) we measure it
28. 28.True or false: vinegar is needed for the periscope. (a) True (b) False
29. 29.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
30. 30.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) an empty juice carton (c) turmeric powder (d) two small mirrors
31. 31.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a battery cell (c) sticky tape (d) a pencil
32. 32.🔭 What does a periscope let you do? (a) see germs (b) see over a wall (c) see in the dark (d) hear far sounds
33. 33.🧺 Which of these is needed for the periscope? (a) a pencil (b) turmeric powder (c) yeast (d) a magnet
34. 34.True or false: a mirror reflects light well. (a) False (b) True
35. 35.True or false: vinegar is not needed for the periscope. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) a shiny steel plate (d) dark soil
37. 37.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
38. 38.🔭 How many mirrors does a simple periscope use?
39. 39.🔭 Which of these reflects light well? (a) dark soil (b) aluminium foil (c) a dull brick (d) black cloth
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) vinegar (c) a pencil (d) a ruler

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