SME
Grade 5 Science · Problem type
A seedling grown in water only
Use this to record a seedling’s mass each week when it grows in water with no soil.
Record and look
2
5
10
18
28
40
Week 0
Week 1
Week 2
Week 3
Week 4
Week 5
Week 0
Week 1
Week 2
Week 3
Week 4
Week 5
Mass (g)
2
5
10
18
28
40
It gained 38 g with no soil at all.
The new mass came from water and air.
Tap a bar at the height you want.
Assumptions
•
Grow a seedling in a jar of water, with no soil at all.
•
Weigh it each week. Add a few drops of plant food: the minerals soil would give.
•
Tap a bar to change that week’s mass.
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What a plant takes in
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Earth systems: geosphere, hydrosphere, atmosphere, biosphere
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