Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 32 · 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.🎈 Why does the balloon rocket move along the string? (a) the straw is heavy (b) a magnet pulls it (c) escaping air pushes it (d) the string pulls it
2. 2.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a drinking straw (c) a magnetic chess set (d) a compass needle
3. 3.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the paper makes colours (c) water splits the light (d) the glass is painted
4. 4.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we measure it (b) we change it (c) we keep it the same
5. 5.🔮 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
6. 6.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we change it (b) we keep it the same (c) we measure it
7. 7.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) behind you (c) under the ground (d) straight above you
8. 8.🔮 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) the crumpled ball (d) neither of them
9. 9.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the length of the stem (c) the amount of water (d) the amount of colour
10. 10.True or false: a magnet is not needed for the water cycle bowl. (a) False (b) True
11. 11.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) yeast (c) a pencil (d) a ruler
12. 12.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) whether it floats (b) the shape of the clay (c) the amount of clay (d) the kind of clay
13. 13.⚖️ 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 what we measure. (a) True (b) False
14. 14.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a balloon (b) water (c) a small cup (d) ice cubes
15. 15.🧺 Do we need a magnet for the water cycle bowl? (a) needed (b) not needed
16. 16.🔮 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
17. 17.True or false: a clear glass of water is needed for the water rainbow. (a) True (b) False
18. 18.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the honey layer (b) under the honey (c) on top of the oil (d) in the water layer
19. 19.🔍 Which is the odd one out? (a) sugar (b) chalk powder (c) sand (d) sawdust
20. 20.⚖️ 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 glass”? (a) we change it (b) we keep it the same (c) we measure it
21. 21.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) warm water (c) honey (d) cold water
22. 22.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes backward (b) goes forward
23. 23.True or false: a paper clip is needed for the paper helicopter. (a) False (b) True
24. 24.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) they never dry (b) faster (c) slower (d) they turn to ice
25. 25.🧺 Do we need cooking oil for the density tower? (a) needed (b) not needed
26. 26.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is heavier (c) it will not break (d) it is magnetic
27. 27.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
28. 28.🛟 Does a coin float or sink in water? (a) floats (b) sinks
29. 29.🔍 Which is the odd one out? (a) a crumpled paper ball (b) a stone (c) a glass marble (d) an open sheet of paper
30. 30.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
31. 31.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes forward (b) goes backward
32. 32.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a mirror (b) honey (c) water with food colour (d) a spoon
33. 33.🥄 Which of these dissolves slower? (a) sugar in icy water (b) powdered sugar (c) sugar stirred well (d) sugar in warm water
34. 34.🔮 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
35. 35.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
36. 36.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) turmeric powder (c) a tall clear glass (d) water with food colour
37. 37.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
38. 38.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes forward (b) goes backward
39. 39.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of chalk (c) a steel spoon (d) a glass marble
40. 40.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a battery cell (c) a glass of water (d) a magnet

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