Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 933 · 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.🧺 Which of these is not needed for the density tower? (a) a spoon (b) a tall clear glass (c) a magnet (d) honey
2. 2.🍯 Which of these is denser than water? (a) a ping-pong ball (b) air (c) an ice cube (d) a coin
3. 3.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
4. 4.🚁 Dropped from a raised hand, does an open sheet of paper fall slowly or fast? (a) falls slowly (b) falls fast
5. 5.💧 Which change is this: making ice lollies? (a) condensation (b) freezing (c) melting (d) evaporation
6. 6.🧺 Which of these is not needed for the paper helicopter? (a) a balloon (b) safety scissors (c) a paper clip (d) a ruler
7. 7.🚀 Which of these goes forward? (a) the rocket (b) air from the balloon (c) water a swimmer pushes (d) gas from the rocket
8. 8.True or false: a balloon is not needed for the dissolving test. (a) True (b) False
9. 9.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same tape (b) the same string (c) distance it travels (d) how big we blow it
10. 10.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a balloon (b) a clock or timer (c) two clear glasses (d) a teaspoon
11. 11.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) a tall clear glass (c) honey (d) turmeric powder
12. 12.True or false: a mirror is needed for the paper helicopter. (a) False (b) True
13. 13.💧 Which of these is melting? (a) wet clothes drying (b) snow turning to water (c) sweat drying on skin (d) water becoming ice
14. 14.🥄 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
15. 15.🌈 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
16. 16.True or false: sunlight is not needed for the water cycle bowl. (a) True (b) False
17. 17.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we keep it the same (b) we measure it (c) we change it
18. 18.🧊 Why does an ice cube float on water? (a) ice is magnetic (b) ice is less dense (c) ice is very cold (d) water is sticky
19. 19.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) small test objects (c) turmeric powder (d) yeast
20. 20.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a battery cell (b) a tall clear glass (c) a spoon (d) honey
21. 21.🛟 Does a metal key float or sink in water? (a) sinks (b) floats
22. 22.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a balloon (c) a pencil (d) a paper clip
23. 23.🍯 Is honey denser or less dense than water? (a) less dense than water (b) denser than water
24. 24.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a towel (d) a battery cell
25. 25.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the amount of colour
26. 26.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) neither of them (c) both of them (d) the big log
27. 27.True or false: a piece of thermocol sinks in water. (a) False (b) True
28. 28.🧺 Which of these is not needed for the water cycle bowl? (a) sunlight (b) a big bowl (c) a mirror (d) water
29. 29.True or false: a suction hook works by magnetism. (a) False (b) True
30. 30.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same string (b) the slope of the string (c) how big we blow it (d) the same tape
31. 31.True or false: a magnet is not needed for the dissolving test. (a) True (b) False
32. 32.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) colour climbs up it (d) nothing ever happens
33. 33.🧺 Which of these is not needed for the paper helicopter? (a) a ruler (b) a paper clip (c) a strip of paper (d) a mirror
34. 34.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they become solid (b) they turn to honey (c) they separate again (d) they mix for ever
35. 35.True or false: a comb is not needed for the dissolving test. (a) False (b) True
36. 36.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) sun or shade (b) how many drops form (c) the cling film cover (d) the size of the bowl
37. 37.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) the same string (c) how big we blow it
38. 38.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the petals turn bluish (c) the stem turns to ice (d) the water turns green
39. 39.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) sun or shade (b) the size of the bowl (c) how many drops form (d) the cling film cover
40. 40.🔍 Which is the odd one out? (a) dew on morning grass (b) drops under a pot lid (c) a puddle drying up (d) drops on a cold glass

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