Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 867 · 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.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes forward (b) goes backward
2. 2.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) a balloon (d) a sunny window
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 same window (b) the same glass (c) brightness of rainbow (d) the time of day
4. 4.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to win a prize (c) to splash everyone (d) to keep children safe
5. 5.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) the water turns red (b) fewer drops form (c) the bowl freezes (d) more drops form
6. 6.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) a magnet (c) a mirror (d) a balloon
7. 7.🌈 How many colours do we name in a rainbow (VIBGYOR)?
8. 8.🔍 Which is the odd one out? (a) chalk powder (b) small pebbles (c) sand (d) table salt
9. 9.🌼 How does coloured water reach the petals? (a) it rains on them (b) through the air (c) through tiny stem tubes (d) it is sprayed on
10. 10.⚖️ 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
11. 11.🧊 Why does an ice cube float on water? (a) ice is very cold (b) ice is less dense (c) water is sticky (d) ice is magnetic
12. 12.True or false: a plastic ruler does not let water climb. (a) False (b) True
13. 13.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) violet (c) green (d) blue
14. 14.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the time of day (b) brightness of rainbow (c) the amount of water
15. 15.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is what we measure. (a) False (b) True
16. 16.🛟 What should you do with popped balloon pieces? (a) chew them (b) throw them away safely (c) keep them in your mouth (d) give them to a baby
17. 17.🔍 Which is the odd one out? (a) a feather (b) a paper helicopter (c) a coin (d) an open sheet of paper
18. 18.💧 In the covered bowl, where does the water vapour come from? (a) the bowl itself (b) water warmed by the Sun (c) the air outside (d) the cling film
19. 19.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) how big we blow it (b) distance it travels (c) the same string
20. 20.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a steel spoon (c) a strip of cloth (d) a plastic ruler
21. 21.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the amount of water is kept the same. (a) True (b) False
22. 22.🧺 Which of these is not needed for the paper helicopter? (a) a paper clip (b) safety scissors (c) turmeric powder (d) a ruler
23. 23.🚀 Which of these goes forward? (a) the rocket (b) air from the balloon (c) water from the oars (d) water a swimmer pushes
24. 24.🛟 Which rule keeps the density tower experiment safe? (a) pour it on the floor (b) do not lick the spoon (c) throw the glass (d) taste each layer
25. 25.🌈 In VIBGYOR, what number colour is red?
26. 26.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we keep it the same (b) we measure it (c) we change it
27. 27.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is kept the same. (a) True (b) False
28. 28.🎈 Why does the balloon rocket move along the string? (a) the straw is heavy (b) the string pulls it (c) escaping air pushes it (d) a magnet pulls it
29. 29.True or false: a dry leaf sinks in water. (a) False (b) True
30. 30.🔍 You drop a coin into a tub of water. What do you see? (a) it floats (b) it dissolves (c) it sinks (d) it bounces up
31. 31.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) they turn to ice (b) slower (c) they never dry (d) faster
32. 32.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is the one thing we change. (a) False (b) True
33. 33.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) False (b) True
34. 34.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
35. 35.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
36. 36.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is kept the same. (a) True (b) False
37. 37.🚀 Which of these goes forward? (a) the swimmer (b) water from the oars (c) air from the balloon (d) water a swimmer pushes
38. 38.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a mirror (c) sticky tape (d) a long string
39. 39.True or false: glucose powder dissolves in water. (a) False (b) True
40. 40.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb

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