Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 93 · 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.🌈 In VIBGYOR, what number colour is yellow?
2. 2.🌈 In VIBGYOR, what number colour is indigo?
3. 3.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
4. 4.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) yeast (b) a results table (c) a towel for spills (d) a tub of water
5. 5.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the paper makes colours (c) the glass is painted (d) water splits the light
6. 6.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) turmeric powder (c) small test objects (d) a results table
7. 7.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a comb (c) a clock or timer (d) warm water
8. 8.🥄 Which of these does not dissolve in water? (a) sugar (b) small pebbles (c) baking soda (d) glucose powder
9. 9.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the time we wait is what we measure. (a) False (b) True
10. 10.True or false: two clear glasses is needed for the dissolving test. (a) True (b) False
11. 11.True or false: a steel spoon floats on water. (a) False (b) True
12. 12.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the size of the bowl”? (a) we keep it the same (b) we measure it (c) we change it
13. 13.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the order of pouring (b) how much of each liquid (c) the order of the layers (d) the same glass
14. 14.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
15. 15.True or false: honey is less dense than water. (a) False (b) True
16. 16.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it gets hot (c) so it turns blue (d) so it does not fall
17. 17.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to hide the corks (c) to keep children safe (d) to win a prize
18. 18.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is the one thing we change. (a) False (b) True
19. 19.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) yeast (c) a stiff postcard (d) a sink or a bucket
20. 20.🧺 Do we need ice cubes for the water cycle bowl? (a) needed (b) not needed
21. 21.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is the one thing we change. (a) False (b) True
22. 22.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
23. 23.🛟 Does a pebble float or sink in water? (a) sinks (b) floats
24. 24.True or false: a mirror is needed for the density tower. (a) False (b) True
25. 25.🧺 Do we need yeast for the density tower? (a) needed (b) not needed
26. 26.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) an open sheet of paper (d) a crumpled paper ball
27. 27.🛟 Why should only a grown-up handle any hot water? (a) hot water is heavy (b) it changes colour (c) hot water is magnetic (d) hot water can scald
28. 28.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we keep it the same (b) we change it (c) we measure it
29. 29.🌈 In VIBGYOR, what number colour is orange?
30. 30.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
31. 31.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) a magnet (c) cotton wool (d) warm water
32. 32.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a big bowl (b) water (c) a small cup (d) turmeric powder
33. 33.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it floats higher (c) it sinks (d) it melts
34. 34.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is kept the same. (a) False (b) True
35. 35.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) how big we blow it (b) distance it travels (c) the same straw (d) the same string
36. 36.🧺 Which of these is needed for the density tower? (a) turmeric powder (b) a mirror (c) cooking oil (d) a balloon
37. 37.True or false: a mirror is not needed for the float-or-sink test. (a) True (b) False
38. 38.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a mirror (b) a paper clip (c) a strip of paper (d) a pencil
39. 39.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) no colour change (c) the stem turns blue (d) the flower glows
40. 40.True or false: a glass marble is less dense than water. (a) True (b) False

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