Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 411 · 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 water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) a balloon (d) a sunny window
2. 2.⚖️ 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 room it stands in (b) the length of the stem (c) time for colour to show (d) the kind of flower
3. 3.🔮 Predict: you add two more paper clips. How does it fall? (a) it floats up (b) it stops in the air (c) faster (d) slower
4. 4.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is kept the same. (a) False (b) True
5. 5.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the paper makes colours (c) the glass is painted (d) the water is coloured
6. 6.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is magnetic (c) it is heavier (d) it is hotter
7. 7.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it changes colour (c) it can pop loudly (d) it turns into a kite
8. 8.True or false: a pebble is denser than water. (a) True (b) False
9. 9.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a teaspoon (c) cotton wool (d) warm water
10. 10.True or false: a mirror is not needed for the water cycle bowl. (a) True (b) False
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the amount of colour (b) time for colour to show (c) the kind of flower (d) the room it stands in
12. 12.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) under the ground (c) straight above you (d) behind you
13. 13.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
14. 14.🔍 You drop a coin into a tub of water. What do you see? (a) it floats (b) it dissolves (c) it sinks (d) it bounces up
15. 15.🛟 Which scissors should children use to cut the paper? (a) safety scissors (b) gardening shears (c) sharp kitchen shears (d) a paper cutter
16. 16.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a long string (c) turmeric powder (d) a balloon
17. 17.🧺 Which of these is needed for the density tower? (a) a battery cell (b) turmeric powder (c) a mirror (d) water with food colour
18. 18.🔍 Which is the odd one out? (a) a bicycle pump (b) a medicine dropper (c) a vacuum cleaner (d) a magnetic pin holder
19. 19.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a drinking straw (c) a balloon (d) a magnet
20. 20.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we measure it (b) we keep it the same (c) we change it
21. 21.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the amount of water”? (a) we change it (b) we keep it the same (c) we measure it
22. 22.🚀 Which of these goes backward? (a) the rowing boat (b) gas from the rocket (c) the swimmer (d) the rocket
23. 23.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a magnet (c) a small rainbow (d) snow falling
24. 24.🌈 How many colours do we name in a rainbow (VIBGYOR)?
25. 25.🧺 Do we need ice cubes for the water cycle bowl? (a) not needed (b) needed
26. 26.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a battery cell (b) a tall clear glass (c) honey (d) a spoon
27. 27.⚖️ 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
28. 28.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) turmeric powder (c) a clear glass of water (d) a sheet of white paper
29. 29.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) some water evaporates (b) the water increases (c) it turns to salt (d) it turns to ice
30. 30.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “how many drops form”? (a) we keep it the same (b) we measure it (c) we change it
31. 31.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) whether the card stays (b) the same glass (c) how full the glass is (d) the same card
32. 32.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) the time we wait (b) the size of the bowl (c) sun or shade (d) how many drops form
33. 33.True or false: a long string is not needed for the balloon rocket. (a) False (b) True
34. 34.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) the sugar turns to salt (c) all of it dissolves (d) some stays undissolved
35. 35.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card flies away (c) the card stays on (d) the water turns to ice
36. 36.True or false: wet hair drying is evaporation. (a) True (b) False
37. 37.💧 Which change is this: drops under a pot lid? (a) evaporation (b) condensation (c) freezing (d) melting
38. 38.True or false: two chairs is not needed for the balloon rocket. (a) True (b) False
39. 39.🧺 Which of these is needed for the water cycle bowl? (a) a big bowl (b) a battery cell (c) a magnet (d) turmeric powder
40. 40.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a sheet of white paper (c) a magnet (d) a clear glass of water

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