Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 982 · 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: two small mirrors is not needed for the periscope. (a) False (b) True
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) a battery cell (d) a pencil
3. 3.⚖️ 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 same light
4. 4.True or false: dark soil reflects light well. (a) True (b) False
5. 5.⚖️ 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 object we look at (c) the angle of the mirrors
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we keep it the same (c) we change it
7. 7.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
8. 8.True or false: a dull brick reflects light well. (a) True (b) False
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a magnet (d) sticky tape
10. 10.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) a shiny steel plate (d) a dull brick
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) turmeric powder (d) a ruler
12. 12.⚖️ 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 mirrors (b) the same carton (c) the angle of the mirrors (d) the same light
13. 13.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) sticky tape (c) a battery cell (d) two small mirrors
14. 14.⚖️ 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
15. 15.🔍 Which is the odd one out? (a) a rough wooden board (b) black cloth (c) a dull brick (d) a shiny steel plate
16. 16.True or false: a pencil is needed for the periscope. (a) False (b) True
17. 17.🔭 Who uses a periscope to look above the water? (a) a baker (b) a farmer (c) a pilot in a plane (d) a submarine crew
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) True (b) False
19. 19.🔭 How many mirrors does a simple periscope use?
20. 20.🧺 Which of these is not needed for the periscope? (a) a ruler (b) sticky tape (c) an empty juice carton (d) a magnet
21. 21.🔍 Which is the odd one out? (a) aluminium foil (b) a dull brick (c) dark soil (d) black cloth
22. 22.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) loose glass panes (d) plastic safety mirrors
23. 23.🔭 How many times does light bounce off a mirror in a simple periscope?
24. 24.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
25. 25.🧺 Which of these is not needed for the periscope? (a) yeast (b) sticky tape (c) a ruler (d) two small mirrors
26. 26.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) a friend’s toy (d) the Sun
27. 27.🔭 Which of these reflects light well? (a) a shiny steel plate (b) a dull brick (c) dark soil (d) a rough wooden board
28. 28.🔭 Which of these reflects light poorly? (a) black cloth (b) a mirror (c) still clear water (d) a shiny steel plate
29. 29.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
30. 30.True or false: a pencil is not needed for the periscope. (a) True (b) False
31. 31.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 180 degrees (c) 45 degrees (d) 10 degrees
32. 32.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
33. 33.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a ruler (c) turmeric powder (d) sticky tape
34. 34.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) reflection (d) magnetism
35. 35.🧺 Which of these is needed for the periscope? (a) a ruler (b) a battery cell (c) vinegar (d) turmeric powder
36. 36.True or false: a battery cell is needed for the periscope. (a) False (b) True
37. 37.🔭 What does a periscope let you do? (a) see over a wall (b) see germs (c) hear far sounds (d) see in the dark
38. 38.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) a brighter view (d) two pictures
39. 39.🧺 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) vinegar
40. 40.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so it can float (c) so light reaches the eye (d) to make it heavy

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