Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 873 · 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.🧺 Do we need a drinking straw for the balloon rocket? (a) needed (b) not needed
2. 2.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
3. 3.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we measure it (b) we change it (c) we keep it the same
4. 4.🔍 Which is the odd one out? (a) very salty water (b) a pebble (c) an ice cube (d) a glass marble
5. 5.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the time we wait”? (a) we keep it the same (b) we change it (c) we measure it
6. 6.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a medicine dropper (c) a magnetic pin holder (d) a fridge magnet
7. 7.🔍 Which is the odd one out? (a) a cork (b) air (c) cooking oil (d) very salty water
8. 8.⚖️ 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 tub of water (b) the shape of the clay (c) the kind of clay (d) the amount of clay
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a battery cell (c) a balloon (d) yeast
10. 10.⚖️ 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 glass”? (a) we keep it the same (b) we measure it (c) we change it
11. 11.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
12. 12.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) wash your hands (d) rub your eyes
13. 13.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we measure it (b) we keep it the same (c) we change it
14. 14.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a balloon (c) yeast (d) a sink or a bucket
15. 15.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is kept the same. (a) True (b) False
16. 16.🧺 Which of these is not needed for the density tower? (a) a tall clear glass (b) water with food colour (c) a mirror (d) honey
17. 17.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a battery cell (c) a sheet of white paper (d) bright sunlight
18. 18.🛟 Which scissors should children use to cut the paper? (a) safety scissors (b) gardening shears (c) a paper cutter (d) sharp kitchen shears
19. 19.🧺 Which of these is needed for the density tower? (a) a mirror (b) turmeric powder (c) yeast (d) water with food colour
20. 20.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a tub of water (c) small test objects (d) a balloon
21. 21.🌈 In VIBGYOR, what number colour is indigo?
22. 22.⚖️ 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 what we measure. (a) False (b) True
23. 23.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
24. 24.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a drinking straw (c) a long string (d) vinegar
25. 25.🧺 Which of these is not needed for the balloon rocket? (a) sticky tape (b) a drinking straw (c) two chairs (d) a battery cell
26. 26.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) slower (b) they never dry (c) they turn to ice (d) faster
27. 27.True or false: a paper clip is needed for the paper helicopter. (a) False (b) True
28. 28.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is what we measure. (a) True (b) False
29. 29.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a battery cell (c) a magnet (d) a few hours of waiting
30. 30.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) sugar (c) honey (d) a teaspoon
31. 31.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it speeds up (c) it travels farther (d) it travels less far
32. 32.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) the length of the blades (b) the kind of paper (c) time to reach the floor
33. 33.🚀 Which of these goes backward? (a) the rowing boat (b) the swimmer (c) water from the oars (d) the rocket
34. 34.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
35. 35.🥄 Which of these dissolves slower? (a) sugar in warm water (b) powdered sugar (c) sugar left unstirred (d) sugar stirred well
36. 36.True or false: a bicycle pump works by air pressure. (a) False (b) True
37. 37.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward
38. 38.🌈 In VIBGYOR, what number colour is red?
39. 39.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a mirror (c) a long string (d) a drinking straw
40. 40.True or false: sugar does not dissolve in water. (a) False (b) True

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