Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 300 · 40 questions

What you do (Float or sink?): 1. Fill a tub with water on a towel, with an adult nearby. 2. Guess “float” or “sink” for each object and write it in a table. 3. Gently place each object on the water and write what happens. 4. Press the sinking clay into a boat shape and try again; wipe up spills.

1. 1.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is the one thing we change. (a) True (b) False
2. 2.True or false: turmeric powder is needed for the float-or-sink test. (a) False (b) True
3. 3.True or false: a battery cell is needed for the float-or-sink test. (a) True (b) False
4. 4.True or false: a steel spoon sinks in water. (a) False (b) True
5. 5.True or false: a tub of water is needed for the float-or-sink test. (a) False (b) True
6. 6.True or false: a towel for spills is not needed for the float-or-sink test. (a) False (b) True
7. 7.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
8. 8.🌊 What pushes a floating cork upward? (a) the cork itself (b) the tub (c) the water (d) the air above
9. 9.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) small test objects (c) a mirror (d) a towel for spills
10. 10.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to hide the corks (c) to keep children safe (d) to win a prize
11. 11.🧊 Why does an ice cube float on water? (a) ice is less dense (b) ice is magnetic (c) water is sticky (d) ice is very cold
12. 12.🛟 Does a dry leaf float or sink in water? (a) floats (b) sinks
13. 13.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a balloon (b) a towel for spills (c) a results table (d) a tub of water
14. 14.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a results table (c) yeast (d) a tub of water
15. 15.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it can float (c) it turns to stone (d) it dissolves
16. 16.🛟 Which of these floats on water? (a) a steel spoon (b) a ball of clay (c) a coin (d) an ice cube
17. 17.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we change it (b) we keep it the same (c) we measure it
18. 18.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks
19. 19.🛟 Which of these floats on water? (a) a metal key (b) a steel spoon (c) an iron nail (d) a piece of thermocol
20. 20.🛟 Which of these sinks in water? (a) a pebble (b) a cork (c) an ice cube (d) an ice-cream stick
21. 21.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
22. 22.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the amount of clay (b) the shape of the clay (c) whether it floats
23. 23.True or false: a ball of clay floats on water. (a) True (b) False
24. 24.True or false: yeast is needed for the float-or-sink test. (a) False (b) True
25. 25.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) leave water on the floor (c) run around the tub (d) play near a deep pond
26. 26.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is kept the same. (a) False (b) True
27. 27.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the shape of the clay (b) whether it floats (c) the amount of clay (d) the tub of water
28. 28.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we keep it the same (b) we measure it (c) we change it
29. 29.🔍 Which is the odd one out? (a) an iron nail (b) a coin (c) a ping-pong ball (d) a glass marble
30. 30.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it floats higher (c) it melts (d) it sinks
31. 31.🔍 Which is the odd one out? (a) a piece of thermocol (b) an ice cube (c) a dry leaf (d) an iron nail
32. 32.True or false: a metal key floats on water. (a) False (b) True
33. 33.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is what we measure. (a) False (b) True
34. 34.True or false: a ping-pong ball sinks in water. (a) True (b) False
35. 35.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is the one thing we change. (a) True (b) False
36. 36.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a battery cell (c) a results table (d) a tub of water
37. 37.True or false: a pebble floats on water. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) a pebble (b) a dry leaf (c) a coin (d) an iron nail
39. 39.🔍 Which is the odd one out? (a) a coin (b) a ball of clay (c) a cork (d) a steel spoon
40. 40.True or false: a steel spoon floats on water. (a) False (b) True

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