Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 750 · 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: dark soil reflects light well. (a) True (b) False
2. 2.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 180 degrees (c) 10 degrees (d) 45 degrees
3. 3.🔭 How many mirrors does a simple periscope use?
4. 4.🔭 What does a periscope let you do? (a) see over a wall (b) see germs (c) hear far sounds (d) see in the dark
5. 5.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) an empty juice carton (c) a pencil (d) vinegar
6. 6.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
7. 7.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) two pictures (d) only darkness
8. 8.⚖️ 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
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a magnet (c) a pencil (d) two small mirrors
10. 10.⚖️ 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 measure it (b) we change it (c) we keep it the same
11. 11.🔭 Which of these reflects light well? (a) black cloth (b) a mirror (c) a rough wooden board (d) dark soil
12. 12.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) reflection (d) magnetism
13. 13.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) a dull brick (d) a shiny steel plate
14. 14.🔍 Which is the odd one out? (a) a dull brick (b) a mirror (c) a shiny steel plate (d) aluminium foil
15. 15.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it looks shiny (c) so it can float (d) so light reaches the eye
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) how clear the view is (c) the object we look at (d) the same carton
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the same carton (c) the angle of the mirrors (d) the object we look at
18. 18.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) a pencil (c) sticky tape (d) an empty juice carton
20. 20.True or false: turmeric powder is needed for the periscope. (a) True (b) False
21. 21.🔭 Which of these reflects light well? (a) a shiny steel plate (b) a dull brick (c) dark soil (d) a rough wooden board
22. 22.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) in colour (d) flipped left to right
23. 23.⚖️ 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) False (b) True
24. 24.🔍 Which is the odd one out? (a) black cloth (b) still clear water (c) dark soil (d) a rough wooden board
25. 25.True or false: yeast is not needed for the periscope. (a) False (b) True
26. 26.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) a rough wooden board (d) a mirror
27. 27.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) big wall mirrors (d) plastic safety mirrors
28. 28.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a balloon (c) a pencil (d) a ruler
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) vinegar (d) a pencil
30. 30.True or false: a ruler is not needed for the periscope. (a) False (b) True
31. 31.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) a wall (d) the Sun
32. 32.⚖️ 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) the angle of the mirrors (c) how clear the view is
33. 33.True or false: a balloon is not needed for the periscope. (a) True (b) False
34. 34.🔍 Which is the odd one out? (a) aluminium foil (b) dark soil (c) a rough wooden board (d) black cloth
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.🔍 Which is the odd one out? (a) a shiny steel plate (b) a rough wooden board (c) dark soil (d) a dull brick
37. 37.⚖️ 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
38. 38.True or false: aluminium foil reflects light poorly. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) a rough wooden board (b) a mirror (c) a dull brick (d) dark soil
40. 40.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a baker (c) a submarine crew (d) a pilot in a plane

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