Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 484 · 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: yeast is not needed for the periscope. (a) False (b) True
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) False (b) True
3. 3.🧺 Which of these is not needed for the periscope? (a) a balloon (b) sticky tape (c) a pencil (d) a ruler
4. 4.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) the ground (c) nothing at all (d) only short walls
5. 5.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) dark soil (d) aluminium foil
6. 6.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
7. 7.⚖️ 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
8. 8.🛟 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
9. 9.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a balloon (c) a ruler (d) a pencil
11. 11.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) to make it heavy (c) so light reaches the eye (d) so it looks shiny
12. 12.🧺 Which of these is needed for the periscope? (a) a magnet (b) yeast (c) a ruler (d) vinegar
13. 13.True or false: turmeric powder is needed for the periscope. (a) True (b) False
14. 14.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
15. 15.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) loose glass panes (d) plastic safety mirrors
16. 16.🧺 Which of these is not needed for the periscope? (a) a ruler (b) an empty juice carton (c) vinegar (d) two small mirrors
17. 17.🔍 Which is the odd one out? (a) still clear water (b) dark soil (c) aluminium foil (d) a mirror
18. 18.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
19. 19.🔮 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
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the angle of the mirrors”? (a) we change it (b) we keep it the same (c) we measure it
21. 21.True or false: a pencil is needed for the periscope. (a) False (b) True
22. 22.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
23. 23.True or false: a ruler is needed for the periscope. (a) True (b) False
24. 24.⚖️ 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) how clear the view is (c) the same carton
25. 25.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a dull brick (c) a shiny steel plate (d) a mirror
26. 26.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) an empty juice carton (d) yeast
27. 27.📘 Light bouncing off a mirror is called ___. (a) reflection (b) refraction (c) evaporation (d) magnetism
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) sticky tape (d) vinegar
29. 29.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
30. 30.⚖️ 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 measure it (c) we change it
31. 31.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) in colour (d) flipped left to right
32. 32.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) dark soil (d) a shiny steel plate
33. 33.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
34. 34.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
35. 35.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
36. 36.🧺 Which of these is needed for the periscope? (a) a battery cell (b) vinegar (c) a magnet (d) two small mirrors
37. 37.⚖️ 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
38. 38.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a wall (c) a friend’s toy (d) a tree
39. 39.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) a mirror (d) a dull brick
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) a ruler (c) an empty juice carton (d) a pencil

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