Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 993 · 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 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 keep it the same (c) we change it
2. 2.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) the cold water (c) a magnet (d) glue on the card
3. 3.💧 Which of these is evaporation? (a) snow turning to water (b) making ice lollies (c) wet hair drying (d) drops under a pot lid
4. 4.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
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) the same card (b) the way we turn it (c) how full the glass is (d) whether the card stays
6. 6.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we measure it (b) we keep it the same (c) we change it
7. 7.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a clock or timer (c) cold water (d) a balloon
8. 8.⚖️ 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 kept the same. (a) False (b) True
9. 9.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) the size of the bowl (b) the amount of water (c) sun or shade (d) how many drops form
10. 10.True or false: cooking oil does not dissolve in water. (a) False (b) True
11. 11.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
12. 12.⚖️ 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 change it (c) we keep it the same
13. 13.🧺 Which of these is needed for the paper helicopter? (a) a magnet (b) turmeric powder (c) a balloon (d) a strip of paper
14. 14.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is the one thing we change. (a) False (b) True
15. 15.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to splash everyone (c) to hide the corks (d) to win a prize
16. 16.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is kept the same. (a) True (b) False
17. 17.True or false: a magnet is needed for the balloon rocket. (a) True (b) False
18. 18.🧺 Which of these is needed for the density tower? (a) yeast (b) a balloon (c) turmeric powder (d) cooking oil
19. 19.🔮 Predict: you add two more paper clips. How does it fall? (a) it stops in the air (b) it floats up (c) faster (d) slower
20. 20.🌈 How many colours do we name in a rainbow (VIBGYOR)?
21. 21.🧺 Do we need a mirror for the dissolving test? (a) needed (b) not needed
22. 22.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
23. 23.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wipe them on walls (d) wash your hands
24. 24.🔍 Which is the odd one out? (a) a drinking straw (b) a vacuum cleaner (c) a medicine dropper (d) a magnetic pin holder
25. 25.📘 What is water vapour? (a) salty water (b) tiny ice cubes (c) water as a gas (d) a kind of smoke
26. 26.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a towel for spills (c) a tub of water (d) a magnet
27. 27.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is what we measure. (a) True (b) False
28. 28.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a results table (c) a magnet (d) a tub of water
29. 29.🥄 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
30. 30.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) magnets (c) clouds (d) prisms
31. 31.🧺 Do we need yeast for the water cycle bowl? (a) needed (b) not needed
32. 32.True or false: a pebble is denser than water. (a) False (b) True
33. 33.🚀 Which of these goes backward? (a) air from the balloon (b) the swimmer (c) the rowing boat (d) the balloon
34. 34.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
35. 35.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) yeast (b) a balloon (c) sticky tape (d) a long string
36. 36.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
37. 37.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a long string (c) a balloon (d) a magnet
38. 38.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
39. 39.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) yeast (c) a sink or a bucket (d) a glass of water
40. 40.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the amount of sugar (b) time to dissolve (c) the stirring (d) the amount of water

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