Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 889 · 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: dew on morning grass is melting. (a) False (b) True
2. 2.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) sticky tape (c) a long string (d) a magnet
3. 3.💧 Which of these is evaporation? (a) a pond icing over (b) butter going runny (c) wet hair drying (d) snow turning to water
4. 4.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) powdered sugar (c) both the same (d) neither of them
5. 5.🧺 Do we need a mirror for the density tower? (a) needed (b) not needed
6. 6.True or false: the swimmer goes forward. (a) True (b) False
7. 7.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
8. 8.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the water temperature (b) the amount of sugar (c) the amount of water (d) time to dissolve
9. 9.🔍 Which is the odd one out? (a) baking soda (b) glucose powder (c) small pebbles (d) sugar
10. 10.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar stirred well (c) a big sugar cube (d) sugar in warm water
11. 11.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) juice likes plastic (c) the straw is magnetic (d) the straw is hot
12. 12.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is the one thing we change. (a) False (b) True
13. 13.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
14. 14.🔮 Predict: you blow the balloon up only a little. What happens? (a) it flies off the string (b) it goes much farther (c) it turns into a kite (d) it goes less far
15. 15.🔍 Which is the odd one out? (a) sugar (b) cooking oil (c) sand (d) small pebbles
16. 16.🍯 Why does honey sink to the bottom of the glass? (a) it is the densest (b) it is the stickiest (c) it is the coldest (d) it is yellow
17. 17.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a clear glass of water (c) a sheet of white paper (d) bright sunlight
18. 18.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) sugar (c) a comb (d) two clear glasses
19. 19.🚀 Which of these goes backward? (a) the swimmer (b) the rocket (c) the rowing boat (d) water from the oars
20. 20.🔍 Which is the odd one out? (a) honey (b) a pebble (c) very salty water (d) cooking oil
21. 21.True or false: yeast is not needed for the water rainbow. (a) True (b) False
22. 22.🧺 Do we need turmeric powder for the float-or-sink test? (a) needed (b) not needed
23. 23.🔍 Which is the odd one out? (a) a steel spoon (b) an iron nail (c) an ice cube (d) a ball of clay
24. 24.🌈 How many colours do we name in a rainbow (VIBGYOR)?
25. 25.True or false: yeast is needed for the water cycle bowl. (a) False (b) True
26. 26.🥄 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
27. 27.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
28. 28.🥄 Which of these dissolves in water? (a) cooking oil (b) food colour (c) chalk powder (d) small pebbles
29. 29.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) a magnet (c) warm water (d) a comb
30. 30.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) smoke (c) sand (d) air
31. 31.🚀 Which of these goes forward? (a) the rocket (b) air from the balloon (c) water from the oars (d) gas from the rocket
32. 32.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a magnet (c) a balloon (d) a glass of water
33. 33.True or false: a magnet is not needed for the float-or-sink test. (a) True (b) False
34. 34.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a magnet (c) a towel for spills (d) a mirror
35. 35.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) water with food colour (c) honey (d) a battery cell
36. 36.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) the tub of water (c) whether it floats
37. 37.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) True (b) False
38. 38.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) sharp kitchen shears (c) safety scissors (d) gardening shears
39. 39.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we measure it (b) we change it (c) we keep it the same
40. 40.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it turns blue (c) so the Sun moves (d) so it gets hot

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