Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 437 · 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 — does the shape of a lump of clay change whether it floats? True or false: whether it floats is the one thing we change. (a) True (b) False
2. 2.🧺 Do we need a balloon for the balloon rocket? (a) needed (b) not needed
3. 3.⚖️ 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
4. 4.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) the water turns red (b) more drops form (c) fewer drops form (d) the bowl freezes
5. 5.🔍 Which is the odd one out? (a) a feather (b) a fluff of cotton (c) a steel spoon (d) an open sheet of paper
6. 6.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) forward (b) straight down (c) backward (d) it stays still
7. 7.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) how many drops form (b) sun or shade (c) the size of the bowl
8. 8.🍯 Is an ice cube denser or less dense than water? (a) less dense than water (b) denser than water
9. 9.🧺 Do we need a battery cell for the water cycle bowl? (a) not needed (b) needed
10. 10.🧺 Do we need a pencil for the paper helicopter? (a) needed (b) not needed
11. 11.🧺 Do we need a battery cell for the density tower? (a) needed (b) not needed
12. 12.True or false: food colour does not dissolve in water. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) glucose powder (b) sawdust (c) table salt (d) sugar
14. 14.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is what we measure. (a) True (b) False
15. 15.True or false: a small cup is not needed for the water cycle bowl. (a) True (b) False
16. 16.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) yeast (c) a long string (d) a balloon
17. 17.🧺 Do we need honey for the density tower? (a) needed (b) not needed
18. 18.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is kept the same. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) a ping-pong ball (b) a cork (c) an ice cube (d) a glass marble
20. 20.⚖️ 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 the layers”? (a) we measure it (b) we keep it the same (c) we change it
21. 21.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a clear glass of water (c) a magnet (d) yeast
22. 22.⚖️ 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 slope of the string (d) the same straw
23. 23.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is what we measure. (a) False (b) True
24. 24.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is kept the same. (a) False (b) True
25. 25.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) yeast (b) a spoon (c) cooking oil (d) a tall clear glass
26. 26.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) turmeric powder (c) a towel for spills (d) small test objects
27. 27.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is what we measure. (a) True (b) False
28. 28.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the amount of sugar (b) the stirring (c) the amount of water (d) the water temperature
29. 29.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a results table (c) a tub of water (d) a mirror
30. 30.True or false: sugar left unstirred dissolves faster. (a) False (b) True
31. 31.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) rub your eyes (d) lick your fingers
32. 32.📘 What pulls the paper helicopter down to the floor? (a) gravity (b) air pressure (c) magnetism (d) the wind
33. 33.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
34. 34.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) sun or shade (b) the time we wait (c) how many drops form
35. 35.True or false: a ruler is needed for the paper helicopter. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) cooking oil (b) a cork (c) air (d) honey
37. 37.⚖️ 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) the order of pouring (b) the same three liquids (c) the same glass (d) the order of the layers
38. 38.True or false: a clock or timer is not needed for the dissolving test. (a) True (b) False
39. 39.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we change it (b) we measure it (c) we keep it the same
40. 40.🧺 Do we need cotton wool for the dissolving test? (a) needed (b) not needed

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids