Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 592 · 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.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
2. 2.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) the stem turns blue (d) no colour change
3. 3.🚀 Which of these goes forward? (a) gas from the rocket (b) water from the oars (c) the swimmer (d) air from the balloon
4. 4.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the order of pouring (b) the same glass (c) how much of each liquid (d) the same three liquids
5. 5.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we measure it (b) we change it (c) we keep it the same
6. 6.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
7. 7.⚖️ 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) True (b) False
8. 8.🚀 Which of these goes forward? (a) the balloon (b) water from the oars (c) air from the balloon (d) water a swimmer pushes
9. 9.🔍 Which is the odd one out? (a) very salty water (b) cooking oil (c) a ping-pong ball (d) an ice cube
10. 10.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) honey (b) very salty water (c) an ice cube (d) a pebble
12. 12.💧 Which of these is condensation? (a) a misty bathroom mirror (b) a pond icing over (c) snow turning to water (d) wet clothes drying
13. 13.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) how much of each liquid (b) the order of pouring (c) the order of the layers (d) the same glass
14. 14.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) sugar (c) a teaspoon (d) a magnet
15. 15.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it changes colour (c) it can pop loudly (d) it gets too heavy
16. 16.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it flies off the string (c) it goes less far (d) it turns into a kite
17. 17.🔍 Which is the odd one out? (a) a metal key (b) an ice cube (c) a ping-pong ball (d) a cork
18. 18.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) on a bed (d) over a sink or bucket
19. 19.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
20. 20.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) the stem is hot (c) petals lose water to air (d) petals are magnetic
21. 21.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of pouring”? (a) we change it (b) we measure it (c) we keep it the same
22. 22.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) less friction (b) no change at all (c) more friction, less far (d) it goes faster
23. 23.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the crumpled ball (b) the flat sheet (c) neither of them (d) a sheet of glass
24. 24.🧺 Which of these is needed for the water cycle bowl? (a) a small cup (b) a magnet (c) yeast (d) a battery cell
25. 25.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they stay white (c) they fall off at once (d) they turn two colours
26. 26.True or false: honey is needed for the dissolving test. (a) False (b) True
27. 27.🧺 Which of these is needed for the float-or-sink test? (a) small test objects (b) a mirror (c) turmeric powder (d) yeast
28. 28.📘 What does “dense” mean? (a) very thin (b) very hot (c) heavy for its size (d) very colourful
29. 29.🛟 Does a glass marble float or sink in water? (a) floats (b) sinks
30. 30.⚖️ 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) the size of the bowl (c) sun or shade (d) how many drops form
31. 31.🧺 Do we need cotton wool for the dissolving test? (a) needed (b) not needed
32. 32.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the time of day (b) brightness of rainbow (c) the amount of water (d) the same white paper
33. 33.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
34. 34.True or false: a steel spoon floats on water. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) a glass marble (b) a cork (c) an iron nail (d) a coin
36. 36.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) True (b) False
37. 37.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) sticky tape (c) turmeric powder (d) a mirror
38. 38.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) the way we turn it (b) the same glass (c) whether the card stays (d) how full the glass is
39. 39.🌈 In VIBGYOR, what number colour is violet?
40. 40.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a paper towel (d) a steel spoon

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