Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 220 · 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 bowl in the sun make more drops than a bowl in the shade? What do we do with “sun or shade”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.⚖️ 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) False (b) True
3. 3.⚖️ 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 the one thing we change. (a) False (b) True
4. 4.True or false: a tub of water is not needed for the float-or-sink test. (a) False (b) True
5. 5.🛟 Which rule keeps the density tower experiment safe? (a) pour it on the floor (b) taste each layer (c) do not lick the spoon (d) throw the glass
6. 6.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) the bottle is magnetic (c) air inside pushes back (d) water is hiding there
7. 7.⚖️ 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) the amount of water (b) sun or shade (c) the size of the bowl (d) the time we wait
8. 8.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) turmeric powder (c) a mirror (d) a sink or a bucket
9. 9.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the amount of sugar (b) the kind of sugar (c) the amount of water (d) time to dissolve
10. 10.🥄 Which of these does not dissolve in water? (a) baking soda (b) small pebbles (c) table salt (d) sugar
11. 11.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a long string (c) vinegar (d) a balloon
12. 12.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) yeast (c) a sheet of white paper (d) a sunny window
13. 13.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is heavier (c) it will not break (d) it is magnetic
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) how much of each liquid (b) the order of the layers (c) the order of pouring
15. 15.🛟 Who should trim the flower stem? (a) a grown-up (b) anyone, without looking (c) a toddler (d) a pet
16. 16.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is the one thing we change. (a) False (b) True
17. 17.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
18. 18.🔍 Which is the odd one out? (a) a ping-pong ball (b) cooking oil (c) a glass marble (d) a cork
19. 19.🥄 Which of these dissolves slower? (a) sugar left unstirred (b) sugar in warm water (c) sugar stirred well (d) powdered sugar
20. 20.🧺 Which of these is needed for the paper helicopter? (a) a balloon (b) a strip of paper (c) turmeric powder (d) a magnet
21. 21.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is kept the same. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a bicycle pump (c) a magnetic pin holder (d) a suction hook
23. 23.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they become solid (b) they mix for ever (c) they separate again (d) they turn to honey
24. 24.True or false: cooking oil is needed for the density tower. (a) False (b) True
25. 25.🚁 Dropped from a raised hand, does a toy parachute fall slowly or fast? (a) falls slowly (b) falls fast
26. 26.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
27. 27.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) sugar (c) honey (d) warm water
28. 28.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
29. 29.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) a balloon (c) a magnet (d) sticky tape
30. 30.True or false: sugar stirred well dissolves faster. (a) True (b) False
31. 31.🌼 How does coloured water reach the petals? (a) through the air (b) it is sprayed on (c) through tiny stem tubes (d) it rains on them
32. 32.True or false: the rowing boat goes forward. (a) True (b) False
33. 33.🍯 Which of these is less dense than water? (a) a ping-pong ball (b) honey (c) a pebble (d) a glass marble
34. 34.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) sunlight (c) a big bowl (d) turmeric powder
35. 35.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) two clear glasses (c) a teaspoon (d) a balloon
36. 36.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) True (b) False
37. 37.🫗 Why does cooking oil float on top of water? (a) oil is heavier (b) oil is hot (c) oil is sticky (d) oil is less dense
38. 38.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes less far (b) it flies off the string (c) it goes much farther (d) it turns into a kite
39. 39.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
40. 40.🧺 Do we need a clock or timer for the dissolving test? (a) not needed (b) needed

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