Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 485 · 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.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a mirror (b) honey (c) a tall clear glass (d) cooking oil
2. 2.🧺 Do we need sunlight for the water cycle bowl? (a) not needed (b) needed
3. 3.True or false: vinegar is needed for the balloon rocket. (a) False (b) True
4. 4.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) the same card (b) whether the card stays (c) how full the glass is
5. 5.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the same straw (b) distance it travels (c) how big we blow it
6. 6.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a towel (d) a mirror
7. 7.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a towel for spills (c) a tub of water (d) turmeric powder
8. 8.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a tub of water (c) a magnet (d) a towel for spills
9. 9.🥄 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
10. 10.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) a mirror (c) two clear glasses (d) a teaspoon
11. 11.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they separate again (b) they mix for ever (c) they become solid (d) they turn to honey
12. 12.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) a battery cell (c) a mirror (d) a drinking straw
13. 13.True or false: an ice cube is denser than water. (a) False (b) True
14. 14.🧺 Do we need a battery cell for the water cycle bowl? (a) needed (b) not needed
15. 15.🥄 Which of these dissolves in water? (a) chalk powder (b) sawdust (c) glucose powder (d) sand
16. 16.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a tub of water (c) a results table (d) turmeric powder
17. 17.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) a clock or timer (c) two clear glasses (d) a magnet
18. 18.🔍 Which is the odd one out? (a) a flower stem (b) a paper towel (c) a rubber eraser (d) a piece of chalk
19. 19.🛟 What should you do with popped balloon pieces? (a) keep them in your mouth (b) throw them away safely (c) give them to a baby (d) chew them
20. 20.True or false: cotton wool is needed for the dissolving test. (a) False (b) True
21. 21.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a balloon (c) a clear glass of water (d) a sheet of white paper
22. 22.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) it goes faster (b) no change at all (c) more friction, less far (d) less friction
23. 23.True or false: cooking oil dissolves in water. (a) True (b) False
24. 24.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a towel (d) a magnet
25. 25.🧺 Which of these is not needed for the density tower? (a) honey (b) a spoon (c) a battery cell (d) a tall clear glass
26. 26.🍯 Why does honey sink to the bottom of the glass? (a) it is the densest (b) it is the coldest (c) it is the stickiest (d) it is yellow
27. 27.🧺 Do we need water for the water cycle bowl? (a) needed (b) not needed
28. 28.🌈 In VIBGYOR, what number colour is blue?
29. 29.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a paper clip (c) a magnet (d) a pencil
30. 30.⚖️ 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 keep it the same (c) we change it
31. 31.🔍 Which is the odd one out? (a) a ball of clay (b) a coin (c) a piece of thermocol (d) a metal key
32. 32.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
33. 33.True or false: drops on a cold glass is melting. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a cotton thread (d) a plastic ruler
35. 35.🧺 Do we need warm water for the dissolving test? (a) needed (b) not needed
36. 36.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we change it (b) we keep it the same (c) we measure it
37. 37.🚁 Which of these falls fast through the air? (a) a coin (b) a toy parachute (c) a paper helicopter (d) a fluff of cotton
38. 38.🚁 Which of these falls fast through the air? (a) a toy parachute (b) a paper helicopter (c) a crumpled paper ball (d) an open sheet of paper
39. 39.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
40. 40.🚁 What does the paper helicopter do as it falls? (a) it turns into a ball (b) it stays still in air (c) it spins round (d) it flies upward

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