Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 22 · 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 yeast for the periscope? (a) not needed (b) needed
2. 2.🔭 How many mirrors does a simple periscope use?
3. 3.🔭 How many times does light bounce off a mirror in a simple periscope?
4. 4.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) to make it heavy (c) so it can float (d) so light reaches the eye
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) two small mirrors (c) a pencil (d) an empty juice carton
7. 7.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a pencil (c) an empty juice carton (d) a balloon
8. 8.🔭 Which of these reflects light well? (a) a shiny steel plate (b) dark soil (c) a dull brick (d) a rough wooden board
9. 9.⚖️ 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) the same mirrors (c) how clear the view is (d) the object we look at
10. 10.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
11. 11.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) only darkness (d) two pictures
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) a ruler (c) an empty juice carton (d) sticky tape
13. 13.⚖️ 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
14. 14.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) a ruler (c) two small mirrors (d) an empty juice carton
16. 16.⚖️ 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 measure it (b) we change it (c) we keep it the same
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we measure it (c) we change it
18. 18.🔍 Which is the odd one out? (a) still clear water (b) a dull brick (c) black cloth (d) dark soil
19. 19.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) broken glass bits (c) loose glass panes (d) plastic safety mirrors
20. 20.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) flipped left to right (c) in colour (d) much bigger
21. 21.True or false: yeast is not needed for the periscope. (a) False (b) True
22. 22.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) the ground (c) only short walls (d) nothing at all
23. 23.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) yeast (c) vinegar (d) turmeric powder
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) an empty juice carton (c) sticky tape (d) a ruler
25. 25.True or false: black cloth reflects light well. (a) False (b) True
26. 26.True or false: still clear water reflects light well. (a) False (b) True
27. 27.🧺 Which of these is needed for the periscope? (a) a magnet (b) two small mirrors (c) yeast (d) a battery cell
28. 28.True or false: a rough wooden board reflects light well. (a) True (b) False
29. 29.True or false: yeast is needed for the periscope. (a) False (b) True
30. 30.⚖️ 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 change it (b) we keep it the same (c) we measure it
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
32. 32.True or false: vinegar is not needed for the periscope. (a) True (b) False
33. 33.⚖️ 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 light (c) the angle of the mirrors (d) the object we look at
34. 34.⚖️ 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
35. 35.🔭 Which of these reflects light well? (a) a rough wooden board (b) a dull brick (c) still clear water (d) black cloth
36. 36.⚖️ 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
37. 37.🔍 Which is the odd one out? (a) aluminium foil (b) a dull brick (c) a shiny steel plate (d) still clear water
38. 38.⚖️ 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
39. 39.🔭 What does a periscope let you do? (a) see over a wall (b) see in the dark (c) see germs (d) hear far sounds
40. 40.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) a mirror (d) a rough wooden board

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids