Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 51 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s science idea. 3. For a fair test: one thing changed, the rest kept the same, one thing measured. 4. For safety: an adult helps, nothing goes in the mouth, no heat, sharp tools or plug points for children.

1. 1.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cotton wool (b) a clock or timer (c) cold water (d) warm water
2. 2.⚖️ Fair test — which kind of ball bounces highest? Which of these is what we measure? (a) the person dropping (b) the kind of ball (c) the drop height (d) bounce height
3. 3.🧺 Which of these is needed for the water rainbow? (a) yeast (b) turmeric powder (c) a clear glass of water (d) a magnet
4. 4.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the size of the plant”? (a) we keep it the same (b) we change it (c) we measure it
5. 5.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a heavy nut or washer (c) a magnet (d) a stopwatch
6. 6.🧺 Which of these is not needed for the balloon rocket? (a) sticky tape (b) a balloon (c) a mirror (d) a drinking straw
7. 7.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) magnet (c) battery (d) rope
8. 8.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) yeast (d) a glass of water
9. 9.🧺 Which of these is not needed for the secret lemon message? (a) a battery cell (b) lemon juice (c) an adult with an iron (d) a cotton bud
10. 10.🧺 Which of these is not needed for making butter? (a) cold water to rinse (b) a bowl (c) fresh cream (d) a battery cell
11. 11.🔬 How many steps are there in our scientific method (question to conclusion)?
12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is the one thing we change. (a) False (b) True
13. 13.⚙️ Which of these is a wheel and axle? (a) a flagpole (b) a slide (c) a well pulley (d) a steering wheel
14. 14.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the same window (b) the amount of water (c) brightness of rainbow
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the amount of clay (b) the tub of water (c) whether it floats (d) the kind of clay
16. 16.True or false: yeast is not needed for the shadow clock. (a) True (b) False
17. 17.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) sit in the shade (c) wear a cap (d) mark with chalk
18. 18.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a sharp tool (c) a small nut or washer (d) a heavy brick
19. 19.True or false: a torn flat sheet makes a strong bridge. (a) False (b) True
20. 20.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is salty (c) clear water is sweet (d) clear water is hot
21. 21.🔮 Predict: you blow the balloon up only a little. What happens? (a) it flies off the string (b) it goes much farther (c) it turns into a kite (d) it goes less far
22. 22.🍯 Which of these is denser than water? (a) cooking oil (b) air (c) honey (d) a ping-pong ball
23. 23.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we keep it the same (b) we change it (c) we measure it
24. 24.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a magnet (c) a pencil (d) an empty thread reel
25. 25.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
26. 26.🔬 In the scientific method, which step number is “observe and record”?
27. 27.⚡ A rubbed comb is held near a heavy book. What happens? (a) does not move (b) jumps to the comb
28. 28.🧺 Which of these is needed for the secret lemon message? (a) a balloon (b) a mirror (c) white paper (d) a magnet
29. 29.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the slope of the string (b) the same string (c) distance it travels (d) the same straw
30. 30.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
31. 31.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
32. 32.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a magnet (b) ice cubes (c) a big bowl (d) cling film
33. 33.⚖️ Fair test — which kind of ball bounces highest? True or false: the drop height is kept the same. (a) True (b) False
34. 34.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is kept the same. (a) True (b) False
35. 35.🧺 Which of these is needed for the static comb? (a) dry hair (b) turmeric powder (c) a mirror (d) a magnet
36. 36.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a mirror (b) water (c) a small bowl (d) cotton wool
37. 37.🧺 Three of these are needed for the paper bridge. Which one is NOT needed? (a) turmeric powder (b) sheets of paper (c) coins (d) two books
38. 38.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) fresh cream (b) cold water to rinse (c) a timer (d) a balloon
39. 39.💧 Which of these is melting? (a) drops on a cold glass (b) snow turning to water (c) wet hair drying (d) sweat drying on skin
40. 40.🎈 What is the job of the straw on the string? (a) it guides the balloon (b) it makes it heavier (c) it holds water (d) it blows air in

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