Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 227 · 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.🧺 Do we need a ruler for the paper helicopter? (a) needed (b) not needed
2. 2.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the kind of sugar (b) the water temperature (c) time to dissolve
3. 3.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the amount of water (b) the same glass (c) the same white paper (d) brightness of rainbow
4. 4.🧺 Which of these is not needed for the paper helicopter? (a) a strip of paper (b) a paper clip (c) safety scissors (d) a balloon
5. 5.🔮 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
6. 6.🧺 Which of these is needed for the water cycle bowl? (a) cling film (b) a mirror (c) a battery cell (d) a magnet
7. 7.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a pencil (b) a strip of paper (c) a ruler (d) a magnet
8. 8.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is what we measure. (a) False (b) True
9. 9.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it speeds up (c) it travels less far (d) it travels farther
10. 10.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
11. 11.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the amount of sugar (b) the amount of water (c) the water temperature (d) time to dissolve
12. 12.🔮 A big log and a small pebble go into a pond. Which one floats? (a) both of them (b) the small pebble (c) neither of them (d) the big log
13. 13.⚖️ 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 kept the same. (a) False (b) True
14. 14.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it flies off the string (c) it goes less far (d) it turns into a kite
15. 15.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) turmeric powder (c) a mirror (d) sticky tape
16. 16.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the room it stands in (b) the amount of colour (c) the length of the stem (d) the kind of flower
17. 17.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) wash your hands (d) lick your fingers
18. 18.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
19. 19.🌈 In VIBGYOR, what number colour is orange?
20. 20.True or false: sugar is needed for the dissolving test. (a) True (b) False
21. 21.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we keep it the same (b) we change it (c) we measure it
22. 22.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) sticky tape (c) a long string (d) a mirror
23. 23.🧺 Do we need vinegar for the balloon rocket? (a) not needed (b) needed
24. 24.🚀 Which of these goes forward? (a) gas from the rocket (b) air from the balloon (c) the balloon (d) water a swimmer pushes
25. 25.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: time to reach the floor is what we measure. (a) True (b) False
26. 26.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a balloon (c) a sunny window (d) turmeric powder
27. 27.🧺 Do we need a strip of paper for the paper helicopter? (a) not needed (b) needed
28. 28.🧺 Do we need a long string for the balloon rocket? (a) needed (b) not needed
29. 29.🛟 Why should only a grown-up handle any hot water? (a) hot water is heavy (b) it changes colour (c) hot water can scald (d) hot water is magnetic
30. 30.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
31. 31.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) a magnet (c) glue on the card (d) air pushing up
32. 32.🌈 In VIBGYOR, what number colour is red?
33. 33.True or false: a teaspoon is not needed for the dissolving test. (a) True (b) False
34. 34.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (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) distance it travels (b) the same tape (c) the same straw (d) how big we blow it
36. 36.True or false: a pond icing over is melting. (a) True (b) False
37. 37.🧺 Do we need yeast for the water cycle bowl? (a) needed (b) not needed
38. 38.🧺 Which of these is needed for the density tower? (a) a battery cell (b) honey (c) a balloon (d) turmeric powder
39. 39.🔍 Which is the odd one out? (a) a feather (b) a stone (c) a fluff of cotton (d) a paper helicopter
40. 40.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed

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