Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 603 · 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) a clock or timer (b) a magnet (c) a teaspoon (d) two clear glasses
2. 2.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
3. 3.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a results table (c) small test objects (d) a battery cell
4. 4.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is the one thing we change. (a) True (b) False
5. 5.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we change it (b) we measure it (c) we keep it the same
6. 6.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it gets hot (c) so it turns blue (d) so it does not fall
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) food colour (d) a battery cell
8. 8.🛟 How should you check if the sugar has dissolved? (a) taste it (b) poke it with a finger (c) look for leftover grains (d) smell it closely
9. 9.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a results table (c) a tub of water (d) turmeric powder
10. 10.🧺 Do we need a pencil for the paper helicopter? (a) not needed (b) needed
11. 11.True or false: a suction hook works by magnetism. (a) False (b) True
12. 12.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
13. 13.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) vinegar (b) sticky tape (c) two chairs (d) a long string
14. 14.🔍 Which is the odd one out? (a) baking soda (b) small pebbles (c) chalk powder (d) sand
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: the same three liquids is what we measure. (a) True (b) False
16. 16.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a balloon (c) a sunny window (d) a clear glass of water
17. 17.🔍 Which is the odd one out? (a) sugar (b) sawdust (c) glucose powder (d) food colour
18. 18.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) two chairs (c) a drinking straw (d) a mirror
19. 19.🔍 Which is the odd one out? (a) a piece of thermocol (b) an iron nail (c) a ball of clay (d) a metal key
20. 20.🚁 Which of these falls fast through the air? (a) an open sheet of paper (b) a coin (c) a feather (d) a fluff of cotton
21. 21.True or false: a ping-pong ball sinks in water. (a) False (b) True
22. 22.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) less friction (b) more friction, less far (c) it goes faster (d) no change at all
23. 23.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the time we wait is kept the same. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) an ice cube (b) a ping-pong ball (c) honey (d) cooking oil
25. 25.True or false: a big sugar cube dissolves slower. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) a ball of clay (b) a pebble (c) an ice cube (d) a steel spoon
27. 27.True or false: sugar in warm water dissolves slower. (a) True (b) False
28. 28.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is kept the same. (a) True (b) False
29. 29.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) some water evaporates (b) it turns to salt (c) it turns to ice (d) the water increases
30. 30.True or false: a magnet is needed for the water rainbow. (a) True (b) False
31. 31.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) yeast (d) bright sunlight
32. 32.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) how big we blow it (b) distance it travels (c) the same tape
33. 33.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is kept the same. (a) True (b) False
34. 34.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) a clock or timer (c) a magnet (d) a comb
35. 35.True or false: sweat drying on skin is evaporation. (a) True (b) False
36. 36.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) spilled oil is slippery (c) oil makes it rain (d) oil attracts magnets
37. 37.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
38. 38.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
39. 39.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
40. 40.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is the one thing we change. (a) True (b) False

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