Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 182 · 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.True or false: turmeric powder is needed for the density tower. (a) False (b) True
2. 2.🧺 Do we need a balloon for the paper helicopter? (a) not needed (b) needed
3. 3.🔮 A big log and a small pebble go into a pond. Which one floats? (a) both of them (b) the small pebble (c) the big log (d) neither of them
4. 4.True or false: a mirror is not needed for the paper helicopter. (a) False (b) True
5. 5.True or false: a bicycle pump works by magnetism. (a) True (b) False
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a magnet (c) a battery cell (d) a few hours of waiting
7. 7.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) magnetism (c) evaporation (d) melting
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 pouring is the one thing we change. (a) False (b) True
9. 9.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) a toddler (d) anyone, without looking
10. 10.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) yeast (b) sunlight (c) cling film (d) ice cubes
11. 11.☀️ What is white sunlight really made of? (a) many colours mixed (b) only yellow light (c) tiny bits of dust (d) tiny drops of water
12. 12.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is kept the same. (a) False (b) True
13. 13.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a magnet (c) a sunny window (d) a mirror
14. 14.⚖️ 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 water temperature (c) the stirring (d) the kind of sugar
15. 15.🧺 Do we need a battery cell for the paper helicopter? (a) needed (b) not needed
16. 16.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the water temperature (b) time to dissolve (c) the stirring (d) the kind of sugar
18. 18.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) True (b) False
19. 19.🥄 Which of these dissolves faster? (a) sugar in icy water (b) powdered sugar (c) a big sugar cube (d) sugar left unstirred
20. 20.True or false: a small cup is not needed for the water cycle bowl. (a) True (b) False
21. 21.⚖️ 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 kept the same. (a) False (b) True
22. 22.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a battery cell (c) a results table (d) yeast
23. 23.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the amount of sugar (b) time to dissolve (c) the water temperature
24. 24.🥄 Does powdered sugar dissolve faster or slower? (a) faster (b) slower
25. 25.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes forward (b) goes backward
26. 26.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
27. 27.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is the one thing we change. (a) True (b) False
28. 28.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals like colour (d) petals lose water to air
29. 29.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) behind you (c) in front of you (d) under the ground
30. 30.🧺 Which of these is not needed for the balloon rocket? (a) vinegar (b) a balloon (c) sticky tape (d) a long string
31. 31.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it melts (c) it turns blue (d) it floats higher
32. 32.⚖️ 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) how big we blow it (c) the slope of the string (d) the same straw
33. 33.🌈 In VIBGYOR, what number colour is yellow?
34. 34.🍯 Which of these is less dense than water? (a) honey (b) very salty water (c) a coin (d) air
35. 35.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) some water evaporates (b) it turns to ice (c) it turns to salt (d) the water increases
36. 36.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) a stone (b) a feather (c) a fluff of cotton (d) a paper helicopter
38. 38.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) cooking oil (c) a tall clear glass (d) yeast
39. 39.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) yeast (b) small test objects (c) a results table (d) a tub of water
40. 40.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) warm water (c) a teaspoon (d) a magnet

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