Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 338 · 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 — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the same three liquids”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.⚖️ 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
3. 3.🧺 Do we need a battery cell for the density tower? (a) needed (b) not needed
4. 4.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: how many drops form is the one thing we change. (a) False (b) True
5. 5.🥛 Which of these works by magnetism? (a) a suction hook (b) a magnetic pin holder (c) a bicycle pump (d) a medicine dropper
6. 6.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the length of the stem (b) the kind of flower (c) time for colour to show
7. 7.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a compass needle (d) a vacuum cleaner
8. 8.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we keep it the same (b) we change it (c) we measure it
9. 9.🧺 Do we need a magnet for the density tower? (a) not needed (b) needed
10. 10.True or false: a magnet is not needed for the balloon rocket. (a) True (b) False
11. 11.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) a mirror (d) bright sunlight
12. 12.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we measure it (b) we change it (c) we keep it the same
13. 13.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the card flies away (c) the water turns to ice (d) the glass breaks
14. 14.True or false: a steel spoon falls fast through the air. (a) False (b) True
15. 15.🌈 In VIBGYOR, what number colour is indigo?
16. 16.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
17. 17.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same tape (b) distance it travels (c) the same straw (d) the slope of the string
18. 18.🍯 Which of these is denser than water? (a) a coin (b) a cork (c) cooking oil (d) an ice cube
19. 19.True or false: a magnetic chess set works by air pressure. (a) False (b) True
20. 20.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
21. 21.🧺 Which of these is not needed for the dissolving test? (a) cotton wool (b) a teaspoon (c) a clock or timer (d) two clear glasses
22. 22.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) powdered sugar (c) the sugar cube (d) both the same
23. 23.🧺 Do we need safety scissors for the paper helicopter? (a) not needed (b) needed
24. 24.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
25. 25.🚁 Which of these falls slowly through the air? (a) a paper helicopter (b) a glass marble (c) a crumpled paper ball (d) a steel spoon
26. 26.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we change it (b) we measure it (c) we keep it the same
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a magnet (c) a glass of water (d) food colour
28. 28.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a towel (c) turmeric powder (d) yeast
29. 29.💧 In the covered bowl, where does the water vapour come from? (a) the air outside (b) water warmed by the Sun (c) the cling film (d) the bowl itself
30. 30.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) a balloon (c) a mirror (d) turmeric powder
31. 31.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) True (b) False
32. 32.🧺 Do we need yeast for the balloon rocket? (a) needed (b) not needed
33. 33.True or false: warm water is needed for the dissolving test. (a) True (b) False
34. 34.🛟 Which scissors should children use to cut the paper? (a) gardening shears (b) sharp kitchen shears (c) safety scissors (d) a paper cutter
35. 35.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
36. 36.🧺 Which of these is needed for the water cycle bowl? (a) ice cubes (b) turmeric powder (c) a balloon (d) a mirror
37. 37.🔮 Predict: you blow the balloon up only a little. What happens? (a) it turns into a kite (b) it goes less far (c) it flies off the string (d) it goes much farther
38. 38.📘 What is water vapour? (a) tiny ice cubes (b) a kind of smoke (c) water as a gas (d) salty water
39. 39.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) a balloon (c) a tall clear glass (d) honey
40. 40.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of the layers is the one thing we change. (a) False (b) True

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