Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 617 · 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.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) True (b) False
2. 2.⚖️ 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) how clear the view is (c) the angle of the mirrors
3. 3.True or false: a pencil is needed for the periscope. (a) False (b) True
4. 4.🔭 How many mirrors does a simple periscope use?
5. 5.🔍 Which is the odd one out? (a) a mirror (b) a rough wooden board (c) black cloth (d) a dull brick
6. 6.🔮 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
7. 7.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) plastic safety mirrors (c) loose glass panes (d) big wall mirrors
8. 8.🔍 Which is the odd one out? (a) a rough wooden board (b) still clear water (c) black cloth (d) a dull brick
9. 9.True or false: a rough wooden board reflects light well. (a) True (b) False
10. 10.⚖️ 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 keep it the same (c) we measure it
11. 11.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a brighter view (c) a rainbow (d) two pictures
12. 12.🔭 What does a periscope let you do? (a) see germs (b) see over a wall (c) see in the dark (d) hear far sounds
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) False (b) True
14. 14.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
15. 15.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) a rough wooden board (d) a shiny steel plate
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) a ruler (c) a pencil (d) two small mirrors
17. 17.🔮 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
18. 18.⚖️ 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) False (b) True
19. 19.🧺 Which of these is needed for the periscope? (a) a balloon (b) a magnet (c) sticky tape (d) turmeric powder
20. 20.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) sticky tape (d) a magnet
21. 21.🔭 How many times does light bounce off a mirror in a simple periscope?
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 keep it the same (b) we change it (c) we measure it
24. 24.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a submarine crew (c) a baker (d) a farmer
25. 25.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 45 degrees (d) 90 degrees
26. 26.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a battery cell (c) two small mirrors (d) a magnet
27. 27.⚖️ 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 change it (b) we keep it the same (c) we measure it
28. 28.True or false: vinegar is needed for the periscope. (a) False (b) True
29. 29.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
30. 30.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) a wall (d) the Sun
31. 31.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
32. 32.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
33. 33.⚖️ 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
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) a balloon (d) two small mirrors
36. 36.🔭 Which of these reflects light poorly? (a) still clear water (b) a shiny steel plate (c) a rough wooden board (d) a mirror
37. 37.🔭 Which of these reflects light well? (a) aluminium foil (b) a rough wooden board (c) black cloth (d) dark soil
38. 38.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
39. 39.True or false: two small mirrors 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 kept the same? (a) the angle of the mirrors (b) the same light (c) how clear the view is

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