Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 245 · 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 colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the kind of flower (b) the amount of colour (c) the length of the stem (d) the amount of water
2. 2.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the crumpled ball (b) neither of them (c) the flat sheet (d) a sheet of glass
3. 3.🧺 Do we need a results table for the float-or-sink test? (a) not needed (b) needed
4. 4.True or false: a big sugar cube dissolves faster. (a) False (b) True
5. 5.🧺 Which of these is not needed for the paper helicopter? (a) a pencil (b) a strip of paper (c) a mirror (d) safety scissors
6. 6.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a drinking straw (c) a medicine dropper (d) a magnetic pin holder
7. 7.🧺 Do we need sunlight for the water cycle bowl? (a) not needed (b) needed
8. 8.🔍 Which is the odd one out? (a) food colour (b) glucose powder (c) sawdust (d) baking soda
9. 9.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
10. 10.⚖️ 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
11. 11.🚀 Which of these goes forward? (a) air from the balloon (b) gas from the rocket (c) water a swimmer pushes (d) the swimmer
12. 12.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) wipe them on walls
13. 13.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) the stem is hot (d) petals lose water to air
14. 14.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) a mirror (c) two chairs (d) a drinking straw
15. 15.True or false: an ice cube is denser than water. (a) True (b) False
16. 16.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the stirring (b) time to dissolve (c) the water temperature
17. 17.True or false: an open sheet of paper falls slowly through the air. (a) False (b) True
18. 18.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the paper clip is what we measure. (a) False (b) True
19. 19.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is what we measure. (a) True (b) False
20. 20.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) water (b) ice cubes (c) a battery cell (d) a big bowl
21. 21.🧺 Do we need a paper clip for the paper helicopter? (a) needed (b) not needed
22. 22.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) a clear glass of water (d) a mirror
23. 23.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) under the honey (b) on top of the oil (c) in the honey layer (d) in the water layer
24. 24.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) a balloon (c) sugar (d) warm water
25. 25.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) pour it on the floor (c) do not lick the spoon (d) throw the glass
26. 26.🫗 Why does cooking oil float on top of water? (a) oil is hot (b) oil is sticky (c) oil is heavier (d) oil is less dense
27. 27.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) bright sunlight (c) yeast (d) a sheet of white paper
28. 28.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the length of the blades (b) time to reach the floor (c) the paper clip (d) the person dropping
29. 29.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
30. 30.🧺 Do we need cling film for the water cycle bowl? (a) not needed (b) needed
31. 31.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is what we measure. (a) True (b) False
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a magnet (d) food colour
33. 33.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
34. 34.True or false: a mirror is needed for the water rainbow. (a) True (b) False
35. 35.💧 Which change is this: wet hair drying? (a) condensation (b) melting (c) evaporation (d) freezing
36. 36.True or false: yeast is needed for the water cycle bowl. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) a sugar cube (b) a paper towel (c) a strip of cloth (d) a rubber eraser
38. 38.🍯 Which of these is less dense than water? (a) honey (b) very salty water (c) a glass marble (d) an ice cube
39. 39.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is kept the same. (a) False (b) True
40. 40.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a magnetic chess set (c) a medicine dropper (d) a drinking straw

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