Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 214 · 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.🔍 Which is the odd one out? (a) a pond icing over (b) water becoming ice (c) making ice lollies (d) a puddle drying up
2. 2.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wipe them on walls (d) wash your hands
3. 3.🛟 What should you do with popped balloon pieces? (a) chew them (b) give them to a baby (c) keep them in your mouth (d) throw them away safely
4. 4.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the same window (b) the amount of water (c) the same glass (d) brightness of rainbow
5. 5.True or false: turmeric powder is not needed for the density tower. (a) False (b) True
6. 6.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is the one thing we change. (a) False (b) True
7. 7.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) False (b) True
8. 8.⚖️ 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 same three liquids (b) the order of the layers (c) the same glass (d) how much of each liquid
9. 9.🧺 Do we need a ruler for the paper helicopter? (a) needed (b) not needed
10. 10.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) a sunny window (d) a balloon
11. 11.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a compass needle (c) a drinking straw (d) a medicine dropper
12. 12.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a mirror (c) a ruler (d) a pencil
13. 13.🧺 Do we need honey for the dissolving test? (a) needed (b) not needed
14. 14.🧺 Do we need a tall clear glass for the density tower? (a) needed (b) not needed
15. 15.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) sugar in icy water (c) powdered sugar (d) a big sugar cube
16. 16.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we measure it (b) we change it (c) we keep it the same
17. 17.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) cooking oil (c) a tall clear glass (d) a mirror
18. 18.True or false: gas from the rocket goes forward. (a) True (b) False
19. 19.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the amount of water (b) time for colour to show (c) the length of the stem
20. 20.⚖️ 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 amount of colour (b) the amount of water (c) the length of the stem (d) time for colour to show
21. 21.🌈 How many colours do we name in a rainbow (VIBGYOR)?
22. 22.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
23. 23.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) a cork (b) a pebble (c) an ice cube (d) a piece of thermocol
25. 25.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) backward (b) forward (c) it stays still (d) straight down
26. 26.🧺 Do we need sunlight for the water cycle bowl? (a) not needed (b) needed
27. 27.🛟 Which is a safe rule for the balloon rocket? (a) put string round a neck (b) keep it away from faces (c) aim it at your friend (d) blow it till it bursts
28. 28.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a shadow of ice (d) a small rainbow
29. 29.🧺 Which of these is needed for the paper helicopter? (a) a magnet (b) a mirror (c) a paper clip (d) a balloon
30. 30.⚖️ 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 change it (b) we measure it (c) we keep it the same
31. 31.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we measure it (b) we keep it the same (c) we change it
32. 32.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a battery cell (c) small test objects (d) a mirror
33. 33.🔍 Which is the odd one out? (a) an ice cube (b) a metal key (c) an iron nail (d) a ball of clay
34. 34.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
35. 35.🥄 Which of these dissolves in water? (a) sand (b) small pebbles (c) chalk powder (d) table salt
36. 36.True or false: a tall clear glass is not needed for the density tower. (a) False (b) True
37. 37.🧺 Do we need a battery cell for the density tower? (a) needed (b) not needed
38. 38.🥄 Which of these dissolves in water? (a) chalk powder (b) sawdust (c) sand (d) food colour
39. 39.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it is sprayed on (c) through the air (d) it rains on them
40. 40.True or false: small test objects is needed for the float-or-sink test. (a) False (b) True

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