Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 581 · 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.🛟 Does a glass marble float or sink in water? (a) floats (b) sinks
2. 2.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a tub of water (c) yeast (d) small test objects
3. 3.⚖️ 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 keep it the same (b) we change it (c) we measure it
4. 4.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a tub of water (c) small test objects (d) a battery cell
5. 5.🛟 Does an ice-cream stick float or sink in water? (a) sinks (b) floats
6. 6.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it turns blue (c) it sinks (d) it floats higher
7. 7.True or false: a mirror is needed for the float-or-sink test. (a) False (b) True
8. 8.🧊 Why does an ice cube float on water? (a) water is sticky (b) ice is less dense (c) ice is magnetic (d) ice is very cold
9. 9.🔍 Which is the odd one out? (a) an ice cube (b) a steel spoon (c) a coin (d) a ball of clay
10. 10.⚖️ 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 change it (b) we measure it (c) we keep it the same
11. 11.⚖️ 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
12. 12.🧺 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) a mirror (d) a tub of water
13. 13.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
14. 14.🛟 Does a pebble float or sink in water? (a) sinks (b) floats
15. 15.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a balloon (c) small test objects (d) a battery cell
16. 16.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a results table (c) small test objects (d) a magnet
17. 17.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to keep children safe (c) to splash everyone (d) to hide the corks
18. 18.🔮 A cork floats in tap water. What happens in very salty water? (a) it sinks (b) it dissolves (c) it turns white (d) it still floats
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) yeast
20. 20.🔍 Which is the odd one out? (a) a feather (b) an iron nail (c) a steel spoon (d) a coin
21. 21.🛟 Which of these floats on water? (a) an iron nail (b) a metal key (c) a feather (d) a ball of clay
22. 22.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a towel for spills (c) a tub of water (d) a mirror
23. 23.True or false: a steel spoon sinks in water. (a) False (b) True
24. 24.⚖️ 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 amount of clay (c) the shape of the clay
25. 25.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
26. 26.🛟 Does a steel spoon float or sink in water? (a) floats (b) sinks
27. 27.True or false: a feather floats on water. (a) True (b) False
28. 28.🧺 Which of these is needed for the float-or-sink test? (a) a tub of water (b) a magnet (c) a battery cell (d) turmeric powder
29. 29.⚖️ 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 shape of the clay (c) whether it floats (d) the kind of clay
30. 30.🌊 What pushes a floating cork upward? (a) the water (b) the tub (c) the air above (d) the cork itself
31. 31.🔮 A big log and a small pebble go into a pond. Which one floats? (a) both of them (b) the small pebble (c) neither of them (d) the big log
32. 32.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a towel for spills (c) turmeric powder (d) a results table
33. 33.⚖️ 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
34. 34.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
35. 35.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is kept the same. (a) False (b) True
36. 36.True or false: an empty capped bottle floats on water. (a) False (b) True
37. 37.⚖️ 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
38. 38.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is what we measure. (a) True (b) False
39. 39.🧺 Do we need a results table for the float-or-sink test? (a) not needed (b) needed
40. 40.🔍 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

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