Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 688 · 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 a battery cell for the periscope? (a) needed (b) not needed
2. 2.⚖️ 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
3. 3.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) to make it heavy (d) so light reaches the eye
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) two small mirrors (c) an empty juice carton (d) sticky tape
5. 5.🔭 What does a periscope let you do? (a) see in the dark (b) see over a wall (c) see germs (d) hear far sounds
6. 6.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
7. 7.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
8. 8.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) nobody needs to (c) the youngest child (d) a friend who is running
9. 9.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) a battery cell (d) a pencil
11. 11.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) yeast (c) vinegar (d) sticky tape
12. 12.True or false: turmeric powder is needed for the periscope. (a) True (b) False
13. 13.True or false: a rough wooden board reflects light poorly. (a) False (b) True
14. 14.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a dull brick (d) a mirror
15. 15.⚖️ 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
16. 16.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a rainbow (c) a brighter view (d) two pictures
17. 17.⚖️ 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 same carton (c) the angle of the mirrors
18. 18.True or false: vinegar is needed for the periscope. (a) False (b) True
19. 19.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
20. 20.⚖️ 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
21. 21.⚖️ 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
22. 22.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) taller walls (c) nothing at all (d) only short walls
23. 23.True or false: a dull brick reflects light well. (a) True (b) False
24. 24.True or false: a balloon is not needed for the periscope. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) black cloth (b) aluminium foil (c) a shiny steel plate (d) a mirror
26. 26.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a submarine crew (c) a baker (d) a pilot in a plane
27. 27.⚖️ 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
28. 28.⚖️ 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) False (b) True
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a balloon (c) an empty juice carton (d) a pencil
30. 30.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) a friend’s toy (d) the Sun
31. 31.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
32. 32.🔭 How many times does light bounce off a mirror in a simple periscope?
33. 33.🧺 Which of these is needed for the periscope? (a) a magnet (b) an empty juice carton (c) a battery cell (d) vinegar
34. 34.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) big wall mirrors (d) loose glass panes
35. 35.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) a rough wooden board (d) a dull brick
36. 36.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
37. 37.⚖️ 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
38. 38.🔭 Which of these reflects light well? (a) a dull brick (b) still clear water (c) a rough wooden board (d) black cloth
39. 39.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) a shiny steel plate (d) black cloth
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) the angle of the mirrors (c) how clear the view is

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