Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 162 · 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 a bowl in the sun make more drops than a bowl in the shade? What do we do with “the cling film cover”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.🧺 Which of these is not needed for the water cycle bowl? (a) a big bowl (b) ice cubes (c) a balloon (d) cling film
3. 3.True or false: two chairs is needed for the balloon rocket. (a) False (b) True
4. 4.🛟 Which of these sinks in water? (a) a steel spoon (b) a piece of thermocol (c) a dry leaf (d) an ice cube
5. 5.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is what we measure. (a) True (b) False
6. 6.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) small test objects (c) a magnet (d) a tub of water
7. 7.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
8. 8.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) no colour change (d) the flower glows
9. 9.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) neither of them (c) the big log (d) both of them
10. 10.True or false: water is not needed for the water cycle bowl. (a) True (b) False
11. 11.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) a balloon (c) a mirror (d) turmeric powder
12. 12.True or false: cooking oil is not needed for the density tower. (a) False (b) True
13. 13.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
14. 14.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) turmeric powder (c) a results table (d) a mirror
15. 15.True or false: gas from the rocket goes backward. (a) False (b) True
16. 16.🍯 Which of these is denser than water? (a) a ping-pong ball (b) a glass marble (c) a cork (d) air
17. 17.True or false: a magnet is not needed for the float-or-sink test. (a) True (b) False
18. 18.🛟 Why should only a grown-up handle any hot water? (a) hot water is magnetic (b) hot water can scald (c) hot water is heavy (d) it changes colour
19. 19.🛟 Where is a safe place to drop the helicopter from? (a) a roof edge (b) a high window ledge (c) from your raised hand (d) a wobbly chair
20. 20.True or false: a big bowl is needed for the water cycle bowl. (a) True (b) False
21. 21.🚁 Dropped from a raised hand, does a coin fall slowly or fast? (a) falls slowly (b) falls fast
22. 22.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) the sugar cube (c) neither of them (d) powdered sugar
23. 23.True or false: honey is needed for the dissolving test. (a) False (b) True
24. 24.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) a comb (c) a teaspoon (d) cotton wool
25. 25.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) a battery cell (c) a balloon (d) a tub of water
26. 26.🛟 Which of these sinks in water? (a) an ice cube (b) a feather (c) an empty capped bottle (d) a pebble
27. 27.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a magnet (d) a few hours of waiting
29. 29.🛟 Which of these floats on water? (a) a cork (b) an iron nail (c) a coin (d) a steel spoon
30. 30.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a balloon (c) a magnet (d) sticky tape
31. 31.True or false: a plastic ruler lets water climb up it. (a) True (b) False
32. 32.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to catch any spills (c) to cool the glass (d) to make it rain
33. 33.⚖️ 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) False (b) True
34. 34.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we measure it (b) we change it (c) we keep it the same
35. 35.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) on top of the oil (b) in the water layer (c) in the oil layer (d) at the very bottom
36. 36.⚖️ 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 “how much of each liquid”? (a) we change it (b) we measure it (c) we keep it the same
37. 37.🔍 Which is the odd one out? (a) chalk powder (b) small pebbles (c) table salt (d) sand
38. 38.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes backward (b) goes forward
39. 39.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
40. 40.True or false: a coin is less dense than water. (a) True (b) False

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