Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 117 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — density, dissolving, capillary action, light bending, air pressure, push-back, air resistance or condensation. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) how big we blow it (b) the same string (c) distance it travels (d) the same tape
2. 2.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to keep children safe (c) to splash everyone (d) to hide the corks
3. 3.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) yeast (d) food colour
5. 5.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is what we measure. (a) False (b) True
6. 6.🌊 What pushes a floating cork upward? (a) the cork itself (b) the air above (c) the water (d) the tub
7. 7.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns brighter (c) the rainbow fades (d) it turns all red
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) turmeric powder (d) a white flower
9. 9.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the kind of paper (b) the paper clip (c) the person dropping (d) time to reach the floor
10. 10.🧺 Do we need a magnet for the water cycle bowl? (a) needed (b) not needed
11. 11.💧 Which of these is evaporation? (a) drops on a cold glass (b) wet clothes drying (c) water becoming ice (d) a misty bathroom mirror
12. 12.True or false: honey is not needed for the dissolving test. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) a toy parachute (b) a steel spoon (c) a crumpled paper ball (d) a stone
14. 14.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) sun or shade (b) the time we wait (c) the size of the bowl (d) how many drops form
15. 15.True or false: wet hair drying is evaporation. (a) True (b) False
16. 16.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a results table (c) a towel for spills (d) a magnet
17. 17.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) yeast (b) a strip of paper (c) a pencil (d) a ruler
18. 18.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
19. 19.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
20. 20.🚁 Dropped from a raised hand, does a paper helicopter fall slowly or fast? (a) falls slowly (b) falls fast
21. 21.🛟 Which rule keeps the density tower experiment safe? (a) throw the glass (b) do not lick the spoon (c) taste each layer (d) pour it on the floor
22. 22.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
23. 23.🛟 What should you do with popped balloon pieces? (a) throw them away safely (b) give them to a baby (c) chew them (d) keep them in your mouth
24. 24.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
25. 25.🌈 How many colours do we name in a rainbow (VIBGYOR)?
26. 26.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) at the very bottom (b) in the water layer (c) in the oil layer (d) on top of the oil
27. 27.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to cool the glass (c) to make it rain (d) to catch any spills
28. 28.True or false: a paper towel lets water climb up it. (a) False (b) True
29. 29.🍯 Why does honey sink to the bottom of the glass? (a) it is the stickiest (b) it is yellow (c) it is the densest (d) it is the coldest
30. 30.True or false: a fluff of cotton falls fast through the air. (a) False (b) True
31. 31.True or false: a balloon is not needed for the paper helicopter. (a) False (b) True
32. 32.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
33. 33.True or false: a feather floats on water. (a) True (b) False
34. 34.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes forward (b) goes backward
35. 35.True or false: air from the balloon goes backward. (a) False (b) True
36. 36.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the amount of water is the one thing we change. (a) False (b) True
37. 37.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the tub of water (b) the shape of the clay (c) the kind of clay (d) the amount of clay
38. 38.🔍 Which is the odd one out? (a) a metal key (b) a ping-pong ball (c) an iron nail (d) a glass marble
39. 39.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
40. 40.🚁 What does the paper helicopter do as it falls? (a) it flies upward (b) it turns into a ball (c) it spins round (d) it stays still in air

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