Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 31 · 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.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? What do we do with “where the pencil is”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a heavy nut or washer (c) a magnet (d) a stopwatch
3. 3.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see over a wall (d) see in the dark
4. 4.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? Which of these is what we measure? (a) the same ruler (b) the kind of coins (c) which side goes down (d) where the pencil is
5. 5.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the size of the bowl is kept the same. (a) False (b) True
6. 6.🚁 What does the paper helicopter do as it falls? (a) it stays still in air (b) it turns into a ball (c) it flies upward (d) it spins round
7. 7.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the kind of juice”? (a) we change it (b) we measure it (c) we keep it the same
8. 8.🧺 Which of these is needed for the shadow clock? (a) a clock to check (b) a magnet (c) yeast (d) turmeric powder
9. 9.True or false: an empty capped bottle sinks in water. (a) True (b) False
10. 10.📘 Leaves have tiny holes that let out water vapour. What are they called? (a) veins (b) stomata (c) petals (d) roots
11. 11.True or false: vinegar is not needed for the magnet test. (a) True (b) False
12. 12.⚖️ A child tests plants with and without water, but puts one in the sun and one in a cupboard. Is it a fair test? (a) no, two things changed (b) yes, it is fair (c) only on Sundays (d) yes, if done fast
13. 13.🛟 Why must small magnets be kept away from little children? (a) they may swallow them (b) they are too heavy (c) they smell bad (d) they are too hot
14. 14.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of pouring (b) the order of the layers (c) how much of each liquid
15. 15.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) a magnet (d) bright sunlight
16. 16.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is kept the same? (a) the cream temperature (b) time to make butter (c) how hard we shake
17. 17.True or false: dissolving salt is a change that can be undone. (a) True (b) False
18. 18.🧲 Two magnets: north near north. Do they pull together or push apart? (a) pull together (b) push apart
19. 19.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) capillary action (d) magnetism
20. 20.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) cotton wool (b) a mirror (c) moong seeds (d) a few days
21. 21.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a string (c) a stopwatch (d) yeast
22. 22.🧺 Which of these is not needed for making butter? (a) fresh cream (b) a timer (c) yeast (d) a bowl
23. 23.⚖️ Fair test — which paper shape holds the most coins? True or false: the kind of paper is kept the same. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) cutting the lemon (b) putting the iron away (c) ironing the paper (d) reading the message
25. 25.True or false: a plastic comb is not needed for the static comb. (a) True (b) False
26. 26.🧺 Do we need honey for the dissolving test? (a) not needed (b) needed
27. 27.🌱 Which of these is needed for a seed to sprout? (a) sugar (b) water (c) sunlight (d) salt
28. 28.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) anyone, without looking (d) a toddler
29. 29.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is kept the same. (a) True (b) False
30. 30.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) a raincoat (c) nothing on your head (d) a woollen sweater
31. 31.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
32. 32.🛟 How should the two books be placed for the paper bridge? (a) on top of a pet (b) low and steady (c) on a stool edge (d) high and wobbly
33. 33.🔬 In the scientific method, which step number is “observe and record”?
34. 34.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
35. 35.True or false: detergent water is a base. (a) True (b) False
36. 36.🧺 Three of these are needed for the static comb. Which one is NOT needed? (a) a balloon (b) tiny paper bits (c) a plastic comb (d) vinegar
37. 37.🧺 Which of these is not needed for the yeast balloon? (a) sugar (b) dry yeast (c) a comb (d) a small bottle
38. 38.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is kept the same. (a) True (b) False
39. 39.🛟 How should the plastic bag be tied around the branch? (a) as tight as possible (b) with a hot glue gun (c) with sharp wire (d) gently, not too tight
40. 40.True or false: “So folding makes paper stronger.” is the conclusion step. (a) False (b) True

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