Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 240 · 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.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) a teaspoon (c) cold water (d) cotton wool
2. 2.🚁 Which of these falls slowly through the air? (a) a stone (b) an open sheet of paper (c) a coin (d) a steel spoon
3. 3.💧 Which of these does not let water climb? (a) a steel spoon (b) a strip of cloth (c) a flower stem (d) a cotton thread
4. 4.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
5. 5.⚖️ 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 amount of water (b) brightness of rainbow (c) the time of day
6. 6.🧺 Which of these is not needed for the water cycle bowl? (a) a big bowl (b) sunlight (c) a mirror (d) water
7. 7.True or false: sugar in icy water dissolves faster. (a) False (b) True
8. 8.True or false: gas from the rocket goes backward. (a) True (b) False
9. 9.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it travels less far (c) it speeds up (d) it goes backward first
10. 10.True or false: sand does not dissolve in water. (a) False (b) True
11. 11.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
12. 12.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) safety scissors (c) a paper clip (d) a battery cell
13. 13.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) powdered sugar (c) both the same (d) neither of them
14. 14.🚀 Which of these goes forward? (a) the rocket (b) gas from the rocket (c) air from the balloon (d) water a swimmer pushes
15. 15.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is what we measure. (a) False (b) True
16. 16.🫗 Why does cooking oil float on top of water? (a) oil is hot (b) oil is heavier (c) oil is sticky (d) oil is less dense
17. 17.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) turmeric powder (c) a balloon (d) a towel
18. 18.🥄 Which of these dissolves in water? (a) small pebbles (b) glucose powder (c) cooking oil (d) sawdust
19. 19.⚖️ 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 kind of clay (b) the amount of clay (c) whether it floats (d) the shape of the clay
20. 20.🧺 Do we need honey for the dissolving test? (a) not needed (b) needed
21. 21.🍯 Is a glass marble denser or less dense than water? (a) less dense than water (b) denser than water
22. 22.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is the one thing we change. (a) False (b) True
23. 23.🥄 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
24. 24.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is kept the same. (a) True (b) False
25. 25.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
26. 26.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) red (c) blue (d) violet
27. 27.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a magnet (b) honey (c) water with food colour (d) a spoon
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) food colour (c) a white flower (d) a few hours of waiting
29. 29.🍯 Which of these is less dense than water? (a) air (b) a pebble (c) a glass marble (d) a coin
30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) True (b) False
31. 31.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a sink or a bucket (c) a mirror (d) a magnet
32. 32.🥄 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
33. 33.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
34. 34.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it in a mirror (c) stare at the Sun (d) look at it through glass
35. 35.🔍 Which is the odd one out? (a) a ball of clay (b) a metal key (c) a ping-pong ball (d) a steel spoon
36. 36.🔍 Which is the odd one out? (a) a strip of cloth (b) a paper towel (c) a flower stem (d) a plastic ruler
37. 37.🔍 Which is the odd one out? (a) small pebbles (b) cooking oil (c) chalk powder (d) table salt
38. 38.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a balloon (c) a sunny window (d) a battery cell
39. 39.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) a magnet (c) cotton wool (d) cold water
40. 40.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “how many drops form”? (a) we change it (b) we measure it (c) we keep it the same

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