Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 939 · 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.True or false: aluminium foil reflects light well. (a) False (b) True
2. 2.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) upside down only (d) in colour
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a balloon (c) two small mirrors (d) a ruler
4. 4.🔮 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
5. 5.🔭 How many mirrors does a simple periscope use?
6. 6.True or false: two small mirrors is needed for the periscope. (a) True (b) False
7. 7.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
8. 8.🧺 Which of these is needed for the periscope? (a) a pencil (b) turmeric powder (c) a magnet (d) yeast
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) True (b) False
10. 10.🔭 How many times does light bounce off a mirror in a simple periscope?
11. 11.⚖️ 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 change it (b) we measure it (c) we keep it the same
12. 12.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) the youngest child (c) nobody needs to (d) a friend who is running
13. 13.⚖️ 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 same mirrors (c) the angle of the mirrors
14. 14.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) a friend’s toy (d) the Sun
15. 15.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 45 degrees (d) 180 degrees
16. 16.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
17. 17.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a baker (c) a pilot in a plane (d) a farmer
18. 18.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
19. 19.True or false: a magnet is needed for the periscope. (a) True (b) False
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we keep it the same (c) we change it
21. 21.🔭 Which of these reflects light well? (a) a dull brick (b) a shiny steel plate (c) dark soil (d) black cloth
22. 22.True or false: a battery cell is not needed for the periscope. (a) True (b) False
23. 23.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) an empty juice carton (c) yeast (d) a pencil
24. 24.🛟 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
25. 25.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) the same light (c) how clear the view is (d) the same carton
27. 27.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) a shiny steel plate (d) a rough wooden board
28. 28.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
29. 29.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
30. 30.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) still clear water (d) black cloth
31. 31.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
32. 32.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) a rough wooden board (d) a mirror
33. 33.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
34. 34.True or false: a ruler is needed for the periscope. (a) False (b) True
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) True (b) False
36. 36.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) an empty juice carton (c) a magnet (d) sticky tape
37. 37.🔍 Which is the odd one out? (a) aluminium foil (b) a dull brick (c) a rough wooden board (d) dark soil
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) yeast (d) an empty juice carton
39. 39.True or false: yeast is needed for the periscope. (a) True (b) False
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the same mirrors (c) the same light (d) the angle of the mirrors

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