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Salinity Tolerance Lab - Scientific Method Lab

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377 KB|4 pages
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Product Description:
This is a low mess, easy clean up lab activity using easy to find supplies. In the Salinity Tolerance Lab students will compare the germination rate of seeds that are placed in salt water with those placed in fresh water. They are then asked to describe how an abiotic factor can affect a biotic factor. At the end of the lab they will be given the opportunity to design an experiment to test how the germination rate is affected by different salinity levels. You can decide how in depth you want to follow up activity to be based on your time constraints. If pressed for time you can ask the students to design the lab only. If you have more time, your can have them carry out their experiments.

Materials Needed for Salinity Tolerance Lab:
10% Salt Solution (100g Sea Salt/900 ml H2O)
Fresh Water
Seeds* – 40 per group
Sandwich Size Zipper Bags
Sharpies – 1 per group
Paper Towels – 2 per group
Spray Bottles – 2 for every 2 groups
*I used daikon radish sprouting seeds purchased at the local health foods store

Suggested Materials Needed for the On Your Own Sections:
Balances
Beakers
Graduated Cylinders
Measuring Spoons
Droppers
Paper Towels
Sandwich Bags

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Total Pages
4
Answer Key
N/A
Teaching Duration
3 days
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