Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 333 · 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.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
2. 2.⚖️ 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) True (b) False
3. 3.🌊 What pushes a floating cork upward? (a) the water (b) the air above (c) the tub (d) the cork itself
4. 4.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) both of them (c) neither of them (d) the big log
5. 5.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the kind of clay (c) the shape of the clay
6. 6.🔍 Which is the odd one out? (a) an ice cube (b) a ball of clay (c) a ping-pong ball (d) an ice-cream stick
7. 7.🛟 Does a coin float or sink in water? (a) floats (b) sinks
8. 8.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) it has a magnet (c) steel is very light (d) sea water is warm
9. 9.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we change it (b) we measure it (c) we keep it the same
10. 10.🛟 Does a glass marble float or sink in water? (a) sinks (b) floats
11. 11.True or false: a results table is needed for the float-or-sink test. (a) True (b) False
12. 12.True or false: a coin floats on water. (a) False (b) True
13. 13.⚖️ 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) True (b) False
14. 14.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the amount of clay (b) the kind of clay (c) whether it floats (d) the shape of the clay
15. 15.True or false: a metal key floats on water. (a) False (b) True
16. 16.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) small test objects (c) a magnet (d) a results table
17. 17.True or false: a magnet is not needed for the float-or-sink test. (a) True (b) False
18. 18.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is the one thing we change. (a) True (b) False
19. 19.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) a balloon (c) a towel for spills (d) a battery cell
20. 20.🔮 A cork floats in tap water. What happens in very salty water? (a) it still floats (b) it dissolves (c) it sinks (d) it turns white
21. 21.🛟 Which of these sinks in water? (a) a ping-pong ball (b) a metal key (c) a cork (d) an ice-cream stick
22. 22.🔍 Which is the odd one out? (a) a ping-pong ball (b) an empty capped bottle (c) a dry leaf (d) a coin
23. 23.🛟 Which of these floats on water? (a) a glass marble (b) a pebble (c) a dry leaf (d) a steel spoon
24. 24.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to keep children safe (c) to splash everyone (d) to win a prize
25. 25.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
26. 26.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) turmeric powder (c) a results table (d) a towel for spills
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 amount of clay (b) whether it floats (c) the tub of water (d) the shape of the clay
28. 28.🔍 Which is the odd one out? (a) an iron nail (b) a glass marble (c) a metal key (d) a feather
29. 29.True or false: a steel spoon sinks in water. (a) True (b) False
30. 30.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) small test objects (c) a tub of water (d) a balloon
31. 31.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) play near a deep pond (c) wipe up spills at once (d) run around the tub
32. 32.True or false: a glass marble floats on water. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) a feather (b) a ping-pong ball (c) a steel spoon (d) an ice cube
34. 34.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
35. 35.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it melts (c) it sinks (d) it turns blue
36. 36.🧊 Why does an ice cube float on water? (a) ice is less dense (b) water is sticky (c) ice is magnetic (d) ice is very cold
37. 37.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a tub of water (c) a battery cell (d) a balloon
38. 38.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a battery cell (b) a towel for spills (c) a tub of water (d) small test objects
39. 39.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it turns to stone (b) it dissolves (c) it can float (d) it sinks faster
40. 40.True or false: yeast is not needed for the float-or-sink test. (a) True (b) False

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