Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 826 · 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 stone (b) a toy parachute (c) a paper helicopter (d) a feather
2. 2.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of the layers is the one thing we change. (a) False (b) True
3. 3.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a pet (d) a grown-up
4. 4.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it does not fall (c) so it gets hot (d) so it turns blue
5. 5.🛟 Which rule keeps the density tower experiment safe? (a) throw the glass (b) taste each layer (c) do not lick the spoon (d) pour it on the floor
6. 6.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) the kind of paper (b) time to reach the floor (c) the length of the blades
7. 7.⚖️ 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 pouring”? (a) we measure it (b) we change it (c) we keep it the same
8. 8.True or false: food colour dissolves in water. (a) False (b) True
9. 9.🛟 Why should only a grown-up handle any hot water? (a) hot water can scald (b) hot water is heavy (c) it changes colour (d) hot water is magnetic
10. 10.🔍 Which is the odd one out? (a) a piece of thermocol (b) an empty capped bottle (c) a feather (d) a ball of clay
11. 11.🚀 In “push back, move forward”, which way does the rocket go? (a) goes backward (b) goes forward
12. 12.🍯 Is cooking oil denser or less dense than water? (a) less dense than water (b) denser than water
13. 13.True or false: butter going runny is melting. (a) True (b) False
14. 14.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
15. 15.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) bright sunlight (d) yeast
16. 16.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) yeast (c) a strip of paper (d) a paper clip
17. 17.🌈 How many colours do we name in a rainbow (VIBGYOR)?
18. 18.True or false: sugar is not needed for the dissolving test. (a) True (b) False
19. 19.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) cold water (c) warm water (d) a comb
20. 20.🧺 Which of these is not needed for the density tower? (a) a spoon (b) a balloon (c) water with food colour (d) cooking oil
21. 21.🔍 Which is the odd one out? (a) a pond icing over (b) drops on a cold glass (c) water becoming ice (d) making ice lollies
22. 22.🍯 Is a pebble denser or less dense than water? (a) less dense than water (b) denser than water
23. 23.⚖️ 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) whether the card stays (b) the way we turn it (c) how full the glass is (d) the same glass
24. 24.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the size of the bowl is the one thing we change. (a) True (b) False
25. 25.🍯 Which of these is less dense than water? (a) a pebble (b) a glass marble (c) honey (d) a ping-pong ball
26. 26.🛟 Does a coin float or sink in water? (a) floats (b) sinks
27. 27.True or false: yeast is not needed for the float-or-sink test. (a) False (b) True
28. 28.🔍 Which is the odd one out? (a) a ping-pong ball (b) an empty capped bottle (c) a steel spoon (d) a feather
29. 29.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
30. 30.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
31. 31.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) True (b) False
32. 32.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a mirror (d) a stiff postcard
33. 33.True or false: a cork is less dense than water. (a) True (b) False
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 keep it the same (b) we measure it (c) we change it
35. 35.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) fewer drops form (b) the water turns red (c) the bowl freezes (d) more drops form
36. 36.🌊 What pushes a floating cork upward? (a) the water (b) the cork itself (c) the tub (d) the air above
37. 37.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) turmeric powder (c) a battery cell (d) a sheet of white paper
38. 38.📘 What does “dense” mean? (a) very hot (b) very thin (c) heavy for its size (d) very colourful
39. 39.⚖️ 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 same glass”? (a) we change it (b) we measure it (c) we keep it the same
40. 40.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed

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