Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 665 · 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: turmeric powder is needed for the periscope. (a) False (b) True
2. 2.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so light reaches the eye (c) to make it heavy (d) so it looks shiny
3. 3.🧺 Which of these is needed for the periscope? (a) yeast (b) two small mirrors (c) a battery cell (d) vinegar
4. 4.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we measure it (c) we keep it the same
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) vinegar (c) a ruler (d) an empty juice carton
7. 7.⚖️ 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 light
8. 8.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
9. 9.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) flipped left to right (d) upside down only
10. 10.🔭 How many mirrors does a simple periscope use?
11. 11.⚖️ 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 keep it the same (b) we measure it (c) we change it
12. 12.🔍 Which is the odd one out? (a) black cloth (b) a mirror (c) dark soil (d) a dull brick
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) turmeric powder (c) two small mirrors (d) a ruler
14. 14.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
15. 15.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
16. 16.True or false: black cloth reflects light well. (a) False (b) True
17. 17.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a mirror (d) a rough wooden board
18. 18.⚖️ 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
19. 19.True or false: vinegar is needed for the periscope. (a) False (b) True
20. 20.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) yeast (c) a pencil (d) two small mirrors
21. 21.True or false: a magnet is not needed for the periscope. (a) True (b) False
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a balloon (d) sticky tape
23. 23.True or false: vinegar is not needed for the periscope. (a) True (b) False
24. 24.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
25. 25.⚖️ 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
26. 26.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
27. 27.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
28. 28.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) a wall (d) the Sun
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the object we look at”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) False (b) True
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same light (b) the object we look at (c) the angle of the mirrors (d) how clear the view is
32. 32.🔭 Which of these reflects light well? (a) aluminium foil (b) dark soil (c) black cloth (d) a rough wooden board
33. 33.🧺 Which of these is needed for the periscope? (a) yeast (b) a balloon (c) a magnet (d) an empty juice carton
34. 34.🧺 Which of these is not needed for the periscope? (a) a ruler (b) an empty juice carton (c) a battery cell (d) two small mirrors
35. 35.⚖️ 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
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) how clear the view is (c) the angle of the mirrors (d) the same light
37. 37.True or false: black cloth reflects light poorly. (a) False (b) True
38. 38.True or false: dark soil reflects light well. (a) False (b) True
39. 39.⚖️ 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 measure it (c) we keep it the same
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) False (b) True

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