Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 683 · 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 of these is needed for the dissolving test? (a) a mirror (b) warm water (c) a comb (d) a magnet
2. 2.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
3. 3.True or false: turmeric powder is needed for the density tower. (a) False (b) True
4. 4.🚁 Why do we clip a paper clip to the bottom of the helicopter? (a) to make it fall slower (b) to stop the spinning (c) to make it magnetic (d) to weigh down the bottom
5. 5.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a grown-up (d) a pet
6. 6.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the paper clip is kept the same. (a) False (b) True
7. 7.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) a sheet of glass (b) the flat sheet (c) neither of them (d) the crumpled ball
8. 8.True or false: the rowing boat goes backward. (a) False (b) True
9. 9.True or false: a drinking straw works by magnetism. (a) False (b) True
10. 10.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we measure it (b) we keep it the same (c) we change it
11. 11.🧺 Do we need a balloon for the balloon rocket? (a) needed (b) not needed
12. 12.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we keep it the same (b) we change it (c) we measure 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 what we measure? (a) the order of the layers (b) the same glass (c) the order of pouring (d) the same three liquids
14. 14.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) cooking oil (c) a magnet (d) a spoon
15. 15.True or false: butter going runny is melting. (a) False (b) True
16. 16.🧺 Which of these is needed for the dissolving test? (a) a teaspoon (b) cotton wool (c) honey (d) a comb
17. 17.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) the paper makes colours (c) water splits the light (d) the water is coloured
18. 18.True or false: warm water is needed for the dissolving test. (a) False (b) True
19. 19.True or false: snow turning to water is evaporation. (a) True (b) False
20. 20.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) yeast (c) a mirror (d) a balloon
21. 21.☀️ What is white sunlight really made of? (a) many colours mixed (b) tiny drops of water (c) tiny bits of dust (d) only yellow light
22. 22.🧺 Which of these is not needed for the paper helicopter? (a) a strip of paper (b) a ruler (c) a paper clip (d) a balloon
23. 23.True or false: a ruler is needed for the paper helicopter. (a) False (b) True
24. 24.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) a clock or timer (c) honey (d) a teaspoon
25. 25.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) distance it travels (b) the same tape (c) the same straw (d) how big we blow it
26. 26.🧺 Which of these is needed for the density tower? (a) a magnet (b) turmeric powder (c) a mirror (d) water with food colour
27. 27.🔍 Which layer is on top in the honey-water-oil tower? (a) cooking oil (b) coloured water (c) the spoon (d) honey
28. 28.True or false: turmeric powder is needed for the balloon rocket. (a) True (b) False
29. 29.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it turns into a kite (c) it can pop loudly (d) it changes colour
30. 30.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the water turns to ice (c) the card stays on (d) the glass breaks
31. 31.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the amount of water (b) brightness of rainbow (c) the time of day
32. 32.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the same tape (b) how big we blow it (c) distance it travels
33. 33.🔍 Which is the odd one out? (a) a rubber eraser (b) a strip of cloth (c) a cotton thread (d) a flower stem
34. 34.🚀 In “push back, move forward”, which way does the rocket go? (a) goes backward (b) goes forward
35. 35.🔍 Which is the odd one out? (a) air (b) an ice cube (c) a cork (d) honey
36. 36.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to keep children safe (c) to hide the corks (d) to splash everyone
37. 37.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it still floats (c) it sinks (d) it turns white
38. 38.🧺 Which of these is needed for the water cycle bowl? (a) a battery cell (b) yeast (c) a small cup (d) a mirror
39. 39.🛟 Which of these floats on water? (a) a pebble (b) a ping-pong ball (c) a ball of clay (d) a glass marble
40. 40.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a magnetic pin holder (c) a magnetic chess set (d) a compass needle

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