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Spencer’s Science Experiment. Absorption of water by Pinto Beans. Vocabulary. Volume – the amount of space taken up by an object Hydrophilic – having an attraction for water Porous – water can pass through Imbibition – the process of absorbing water. - PowerPoint PPT Presentation
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SPENCER’S SCIENCE EXPERIMENT
ABSORPTION OF WATER BY PINTO BEANS
VOCABULARY•Volume – the amount of space taken up by an object•Hydrophilic – having an attraction for water•Porous – water can pass through• Imbibition – the process of absorbing water
0 240
1
2
3
4
5
6
7
8
9
3.7
6
3.1
8
cup A (water just covering beans) cup B (cup full of water)
Time (hours)
Height of pinto beans in cup (cm)
WATER ABSORPTION BY PINTO BEANS (24 HOURS)
WATER ABSORPTION BY PINTO BEANS(RATE OF ABSORPTION)
0 2 4 6 8 10 12 240
2
4
6
8
10
12
Time (hours)
Height of pinto beans in cup (cm)
0 2 4 6 8 10 12 24 360
1
2
3
4
5
6
7
8
9
2.5
5
6.2 6.46.7
7.27.5
7.98.2
cup 1C (cup full of water)
Start: beans small and hard, can’t scratch seed coat
8 hours: seed bounces back after being squeezed. Scratch in seed coat stayed. Twice the size of bean at start
16 hours: seed bounces back, coat feels thin, scratch bounced back. Bigger than at 8 hours
24 hours: seed feels spongy, seed coat falls off when scratched. Same size as 16 hours
EFFECT OF WEIGHT ON PINTO BEAN WATER ABSORPTION(DIFFERENT WEIGHTS)
0 2 4 6 8 10 12 240
2
4
6
8
10
12
Time (hours)
Height of pinto beans in cup (cm)
0 2 4 6 8 10 12 24 360
1
2
3
4
5
6
7
8
2.5
4.2
4.75.1
5.55.8
6.16.4
7.0
2.5
3.53.7 3.8
4.14.4
4.6
5.5
6.1
2.52.7
3.23.5
3.84.0
4.54.7
5.2
2.5
3.8 3.94.2
4.44.6
4.85.0
5.2
2.5
3.23.6
3.84.2
4.44.8
5.0 5.1cup 1cup 2 (+1 cup of sand)cup 3 (+2 cups of sand)Cup 4 (+3 cups of sand)