Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 16 · 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 a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
3. 3.🧺 Do we need ice cubes for the water cycle bowl? (a) needed (b) not needed
4. 4.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is the one thing we change. (a) True (b) False
5. 5.🧺 Which of these is not needed for making butter? (a) a balloon (b) a bowl (c) fresh cream (d) a jar with a tight lid
6. 6.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) a mirror (c) sugar (d) two clear glasses
7. 7.True or false: sugar stirred well dissolves slower. (a) True (b) False
8. 8.🏗️ What does a single fixed pulley mainly do? (a) makes it magnetic (b) halves the weight (c) changes pull direction (d) adds weight
9. 9.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) how full the glass is (b) the way we turn it (c) whether the card stays
10. 10.True or false: water a swimmer pushes goes forward. (a) True (b) False
11. 11.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
12. 12.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: which side goes down is the one thing we change. (a) True (b) False
13. 13.True or false: melting butter is a change that can be undone. (a) True (b) False
14. 14.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) an empty bottle (b) a funnel or spoon (c) a magnet (d) vinegar
15. 15.🔍 Which is the odd one out? (a) a plastic ruler (b) a strip of cloth (c) a steel spoon (d) a piece of foil
16. 16.True or false: a tall clear glass is needed for the density tower. (a) False (b) True
17. 17.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
18. 18.🛟 Which of these sinks in water? (a) a ball of clay (b) a cork (c) a ping-pong ball (d) a piece of thermocol
19. 19.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
20. 20.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
21. 21.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? Which of these is the one thing we change? (a) the paper bit size (b) distance to the paper (c) paper bits picked up (d) number of rubs
22. 22.🛟 Does a coin float or sink in water? (a) floats (b) sinks
23. 23.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we change it (b) we measure it (c) we keep it the same
24. 24.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) nothing is needed (c) wipe hands on face (d) lick your fingers
25. 25.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a balloon (c) a tub of water (d) a towel for spills
26. 26.⚖️ 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) how much of each liquid (c) the order of the layers
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) yeast (c) food colour (d) a balloon
28. 28.🍯 Which of these is less dense than water? (a) a pebble (b) a glass marble (c) cooking oil (d) honey
29. 29.True or false: a wooden board is translucent. (a) True (b) False
30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) a dropper or spoon (c) turmeric powder (d) soap solution
31. 31.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
32. 32.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? What do we do with “number of rubs”? (a) we keep it the same (b) we measure it (c) we change it
33. 33.🌱 Which of these is needed for a seed to sprout? (a) sunlight (b) salt (c) warmth (d) soil
34. 34.⚡ A rubbed comb is held near a steel spoon. What happens? (a) jumps to the comb (b) does not move
35. 35.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is what we measure. (a) False (b) True
36. 36.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a cotton bud (b) an adult with an iron (c) turmeric powder (d) white paper
37. 37.🌱 Is air needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
38. 38.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it can float (c) it turns to stone (d) it dissolves
39. 39.🧲 Two magnets: north near north. Do they pull together or push apart? (a) pull together (b) push apart
40. 40.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone

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