Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 461 · 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) a ruler (c) an empty juice carton (d) vinegar
2. 2.🔍 Which is the odd one out? (a) still clear water (b) dark soil (c) black cloth (d) a dull brick
3. 3.🔭 How many times does light bounce off a mirror in a simple periscope?
4. 4.⚖️ 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 keep it the same (c) we measure it
5. 5.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a balloon (c) turmeric powder (d) an empty juice carton
6. 6.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) the same light (c) how clear the view is (d) the same carton
8. 8.True or false: yeast is needed for the periscope. (a) False (b) True
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we change it (c) we keep it the same
10. 10.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) black cloth (d) aluminium foil
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) an empty juice carton (d) a balloon
12. 12.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) big wall mirrors (d) broken glass bits
13. 13.🧺 Which of these is needed for the periscope? (a) sticky tape (b) a balloon (c) a magnet (d) turmeric powder
14. 14.🧺 Which of these is needed for the periscope? (a) a magnet (b) a battery cell (c) a balloon (d) a ruler
15. 15.🔍 Which is the odd one out? (a) black cloth (b) a shiny steel plate (c) a mirror (d) aluminium foil
16. 16.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) flipped left to right (d) much bigger
17. 17.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) nobody needs to (c) a friend who is running (d) the youngest child
18. 18.🔭 Which of these reflects light poorly? (a) a mirror (b) a dull brick (c) a shiny steel plate (d) still clear water
19. 19.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a magnet (c) an empty juice carton (d) two small mirrors
21. 21.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) vinegar (c) sticky tape (d) a ruler
22. 22.True or false: a magnet is not needed for the periscope. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) a shiny steel plate (b) dark soil (c) black cloth (d) a rough wooden board
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) yeast (d) a pencil
25. 25.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) only darkness (c) a rainbow (d) a brighter view
26. 26.True or false: a pencil is needed for the periscope. (a) True (b) False
27. 27.🔭 What does a periscope let you do? (a) see germs (b) see over a wall (c) see in the dark (d) hear far sounds
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) sticky tape (d) turmeric powder
29. 29.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 180 degrees (c) 45 degrees (d) 10 degrees
30. 30.🔭 Which of these reflects light well? (a) a mirror (b) a rough wooden board (c) a dull brick (d) dark soil
31. 31.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
32. 32.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) a balloon (d) sticky tape
33. 33.⚖️ 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
34. 34.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it can float (c) to make it heavy (d) so it looks shiny
35. 35.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
36. 36.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) an empty juice carton (c) a pencil (d) a ruler
37. 37.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) a dull brick (d) a mirror
38. 38.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) still clear water (d) a rough wooden board
39. 39.⚖️ 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
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) how clear the view is (c) the object we look at

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