Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 964 · 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 amount of water in the glass change how bright the rainbow is? True or false: the same white paper is what we measure. (a) False (b) True
2. 2.🛟 Does a feather float or sink in water? (a) sinks (b) floats
3. 3.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
4. 4.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
5. 5.⚖️ 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 three liquids”? (a) we keep it the same (b) we measure it (c) we change it
6. 6.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we measure it (b) we keep it the same (c) we change it
7. 7.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we keep it the same (b) we measure it (c) we change it
8. 8.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) it turns to salt (b) some water evaporates (c) it turns to ice (d) the water increases
9. 9.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it turns all red (c) it floats away (d) the rainbow fades
10. 10.🧺 Do we need a battery cell for the water cycle bowl? (a) not needed (b) needed
11. 11.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
12. 12.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) time to dissolve (b) the stirring (c) the water temperature
13. 13.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “how many drops form”? (a) we change it (b) we measure it (c) we keep it the same
14. 14.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
15. 15.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it turns to stone (b) it can float (c) it sinks faster (d) it dissolves
16. 16.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) throw them away safely (c) keep them in your mouth (d) chew them
17. 17.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes backward (b) goes forward
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we change it (b) we measure it (c) we keep it the same
19. 19.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) sunlight (b) ice cubes (c) a small cup (d) a balloon
20. 20.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) cooking oil (c) turmeric powder (d) a spoon
21. 21.True or false: air from the balloon goes forward. (a) True (b) False
22. 22.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes forward (b) goes backward
23. 23.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) two clear glasses (c) cotton wool (d) a teaspoon
24. 24.🧺 Do we need a strip of paper for the paper helicopter? (a) needed (b) not needed
25. 25.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is kept the same. (a) False (b) True
26. 26.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “sun or shade”? (a) we measure it (b) we keep it the same (c) we change it
27. 27.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) how big we blow it (b) distance it travels (c) the same straw (d) the same tape
28. 28.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
29. 29.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a magnet (d) a few hours of waiting
30. 30.🔍 Which is the odd one out? (a) a pebble (b) air (c) a glass marble (d) a coin
31. 31.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a magnet (b) a paper clip (c) a pencil (d) safety scissors
32. 32.True or false: honey is not needed for the dissolving test. (a) True (b) False
33. 33.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) a drinking straw (c) a battery cell (d) a mirror
34. 34.🧺 Which of these is not needed for the water cycle bowl? (a) a mirror (b) water (c) a big bowl (d) ice cubes
35. 35.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) a sheet of glass (b) the crumpled ball (c) neither of them (d) the flat sheet
36. 36.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
37. 37.💧 Which change is this: butter going runny? (a) evaporation (b) freezing (c) melting (d) condensation
38. 38.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is what we measure. (a) True (b) False
39. 39.⚖️ 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 same glass (c) how full the glass is (d) the same card
40. 40.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed

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