Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 964 · 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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) turmeric powder (d) an empty juice carton
2. 2.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) black cloth (c) a mirror (d) aluminium foil
3. 3.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) plastic safety mirrors (d) broken glass bits
4. 4.True or false: sticky tape is needed for the periscope. (a) True (b) False
5. 5.🔭 How many mirrors does a simple periscope use?
6. 6.⚖️ 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) True (b) False
7. 7.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) reflection (d) magnetism
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we measure it (c) we keep it the same
9. 9.🧺 Which of these is needed for the periscope? (a) a balloon (b) yeast (c) turmeric powder (d) sticky tape
10. 10.True or false: a battery cell is not needed for the periscope. (a) True (b) False
11. 11.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a ruler (c) a magnet (d) a balloon
12. 12.⚖️ 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 mirrors (c) how clear the view is
13. 13.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the angle of the mirrors (c) the object we look at (d) the same carton
15. 15.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) black cloth (d) a shiny steel plate
16. 16.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) a mirror (d) black cloth
17. 17.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
18. 18.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) the Sun (d) a friend’s toy
19. 19.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 45 degrees (c) 180 degrees (d) 10 degrees
20. 20.🔭 How many times does light bounce off a mirror in a simple periscope?
21. 21.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
22. 22.⚖️ 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
23. 23.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) a mirror (d) black cloth
24. 24.🧺 Which of these is needed for the periscope? (a) vinegar (b) a balloon (c) yeast (d) a pencil
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we keep it the same (c) we measure it
26. 26.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) True (b) False
28. 28.True or false: a pencil is not needed for the periscope. (a) False (b) True
29. 29.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
30. 30.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
31. 31.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) a magnet (c) a balloon (d) vinegar
32. 32.True or false: a dull brick reflects light well. (a) True (b) False
33. 33.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) a ruler (c) a pencil (d) two small mirrors
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) vinegar (d) a pencil
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) True (b) False
36. 36.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
37. 37.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) an empty juice carton (d) a balloon
38. 38.⚖️ 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
39. 39.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) much bigger (d) flipped left to right
40. 40.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it can float (c) so it looks shiny (d) to make it heavy

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