Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 499 · 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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a ruler (d) a balloon
2. 2.🧺 Which of these is needed for the periscope? (a) vinegar (b) sticky tape (c) a magnet (d) a balloon
3. 3.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
4. 4.🔭 Which of these reflects light well? (a) a rough wooden board (b) aluminium foil (c) black cloth (d) a dull brick
5. 5.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
6. 6.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) refraction (d) reflection
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the same carton (c) the same mirrors (d) how clear the view is
8. 8.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) nothing at all (c) only short walls (d) taller walls
9. 9.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) broken glass bits (d) big wall mirrors
10. 10.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so light reaches the eye (c) so it looks shiny (d) to make it heavy
11. 11.True or false: a mirror reflects light poorly. (a) True (b) False
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) False (b) True
13. 13.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
14. 14.🔭 How many mirrors does a simple periscope use?
15. 15.🔭 How many times does light bounce off a mirror in a simple periscope?
16. 16.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) much bigger (d) flipped left to right
17. 17.⚖️ 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 change it (b) we keep it the same (c) we measure it
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) a ruler (d) yeast
19. 19.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) a rainbow (d) only darkness
20. 20.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) dark soil (d) still clear water
21. 21.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
22. 22.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
23. 23.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) two small mirrors (d) vinegar
25. 25.True or false: two small mirrors is needed for the periscope. (a) True (b) False
26. 26.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
27. 27.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a pencil (c) turmeric powder (d) yeast
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we change it (c) we keep it the same
29. 29.🔭 Which of these reflects light well? (a) black cloth (b) still clear water (c) dark soil (d) a dull brick
30. 30.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
31. 31.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a magnet (c) two small mirrors (d) a ruler
32. 32.True or false: a magnet is not needed for the periscope. (a) True (b) False
33. 33.True or false: a ruler is needed for the periscope. (a) False (b) True
34. 34.True or false: turmeric powder is needed for the periscope. (a) True (b) False
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) turmeric powder (d) sticky tape
36. 36.True or false: black cloth reflects light poorly. (a) False (b) True
37. 37.🧺 Which of these is needed for the periscope? (a) vinegar (b) a ruler (c) a battery cell (d) turmeric powder
38. 38.🔭 What does a periscope let you do? (a) see in the dark (b) hear far sounds (c) see germs (d) see over a wall
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) two small mirrors (c) sticky tape (d) an empty juice carton
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) a battery cell (d) a ruler

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