Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 654 · 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.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
2. 2.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) a dull brick (d) a shiny steel plate
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the object we look at (b) how clear the view is (c) the angle of the mirrors
4. 4.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) True (b) False
6. 6.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
7. 7.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) to make it heavy (c) so it can float (d) so it looks shiny
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) sticky tape (d) yeast
9. 9.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see over a wall (d) see in the dark
10. 10.True or false: vinegar is not needed for the periscope. (a) False (b) True
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) sticky tape (d) a battery cell
12. 12.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) sticky tape (c) a battery cell (d) a pencil
13. 13.🧺 Which of these is needed for the periscope? (a) yeast (b) sticky tape (c) a balloon (d) a battery cell
14. 14.⚖️ 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 object we look at (c) the angle of the mirrors (d) how clear the view is
15. 15.🔭 How many mirrors does a simple periscope use?
16. 16.🛟 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
17. 17.⚖️ 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) True (b) False
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a magnet (d) a pencil
19. 19.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) a shiny steel plate (d) a rough wooden board
20. 20.True or false: a mirror reflects light poorly. (a) True (b) False
21. 21.⚖️ 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
22. 22.🧺 Which of these is needed for the periscope? (a) a balloon (b) a battery cell (c) vinegar (d) a pencil
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) False (b) True
24. 24.True or false: a pencil is not needed for the periscope. (a) False (b) True
25. 25.True or false: a balloon is not needed for the periscope. (a) True (b) False
26. 26.True or false: sticky tape is needed for the periscope. (a) True (b) False
27. 27.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) a ruler (d) turmeric powder
31. 31.🧺 Which of these is needed for the periscope? (a) a magnet (b) yeast (c) a ruler (d) vinegar
32. 32.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) only darkness (d) a brighter view
33. 33.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a friend’s toy (c) a tree (d) a wall
34. 34.🔭 How many times does light bounce off a mirror in a simple periscope?
35. 35.🔍 Which is the odd one out? (a) a dull brick (b) a shiny steel plate (c) a rough wooden board (d) dark soil
36. 36.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
37. 37.True or false: a mirror reflects light well. (a) False (b) True
38. 38.⚖️ 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 angle of the mirrors (c) the same carton
39. 39.⚖️ 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
40. 40.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) flipped left to right (d) upside down only

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