Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 360 · 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 tall clear glass (b) turmeric powder (c) cooking oil (d) honey
2. 2.🧺 Do we need turmeric powder for the balloon rocket? (a) not needed (b) needed
3. 3.🍯 Which of these is denser than water? (a) air (b) a ping-pong ball (c) an ice cube (d) very salty water
4. 4.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sunny window (c) a sheet of white paper (d) yeast
5. 5.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) how full the glass is (b) whether the card stays (c) the same glass (d) the same card
6. 6.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a comb (b) warm water (c) two clear glasses (d) sugar
7. 7.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a balloon (c) bright sunlight (d) turmeric powder
8. 8.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) small test objects (c) a towel for spills (d) yeast
9. 9.True or false: a magnetic chess set works by air pressure. (a) True (b) False
10. 10.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
11. 11.🌈 In VIBGYOR, what number colour is green?
12. 12.🧺 Which of these is not needed for the water cycle bowl? (a) sunlight (b) a big bowl (c) yeast (d) water
13. 13.🚁 Dropped from a raised hand, does a paper helicopter fall slowly or fast? (a) falls slowly (b) falls fast
14. 14.🔮 Predict: you fold the two blades the other way. What changes? (a) it falls upward (b) it turns blue (c) it does not fall (d) it spins the other way
15. 15.💧 Which of these is evaporation? (a) drops on a cold glass (b) dew on morning grass (c) wet clothes drying (d) a misty bathroom mirror
16. 16.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) True (b) False
17. 17.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
18. 18.🧺 Do we need a mirror for the density tower? (a) needed (b) not needed
19. 19.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
20. 20.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) brightness of rainbow (b) the same window (c) the amount of water (d) the time of day
21. 21.🔍 Which is the odd one out? (a) a glass marble (b) a feather (c) a coin (d) a crumpled paper ball
22. 22.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a mirror (c) a magnet (d) a glass of water
23. 23.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a sink or bucket (c) near a plug point (d) over a laptop
24. 24.True or false: a battery cell is not needed for the balloon rocket. (a) True (b) False
25. 25.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) water splits the light (c) the paper makes colours (d) the glass is painted
26. 26.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we change it (b) we measure it (c) we keep it the same
27. 27.🥄 Which of these does not dissolve in water? (a) food colour (b) baking soda (c) sand (d) sugar
28. 28.🧺 Which of these is not needed for the density tower? (a) a magnet (b) a spoon (c) cooking oil (d) a tall clear glass
29. 29.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we measure it (b) we keep it the same (c) we change it
30. 30.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is kept the same. (a) True (b) False
31. 31.🔮 Predict: you add two more paper clips. How does it fall? (a) faster (b) it stops in the air (c) slower (d) it floats up
32. 32.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes forward (b) goes backward
33. 33.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) time to dissolve (b) the water temperature (c) the stirring
34. 34.🌈 How many colours do we name in a rainbow (VIBGYOR)?
35. 35.🔍 Which is the odd one out? (a) a feather (b) a pebble (c) a ping-pong ball (d) a piece of thermocol
36. 36.🔍 Which is the odd one out? (a) a plastic ruler (b) a sugar cube (c) a paper towel (d) a cotton thread
37. 37.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) turmeric powder (b) a results table (c) a tub of water (d) small test objects
38. 38.⚖️ 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 amount of water (b) the same window (c) the time of day (d) the same glass
39. 39.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is what we measure. (a) False (b) True
40. 40.🧺 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

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