How do we define life? How do scientists know if they find it? Is it alive? How do we define life? How do scientists know if they find it?

Experiment Background We usually recognize something as being alive or not alive. When scientists study very small samples or old fossilized materials, the signs of life are not easy to determine. Scientists must establish criteria to work with Also see videos posted on website; link: How life began - video

Part A Work with your group to write down the 8 characteristics (also know as criteria) of life

Part B Two parts, 1 and 2 Part 1 – NO water! Read procedures and make observations Your observations go in the table Your sketches need to be as clear as possible and LABELLED!

Part B Two parts, 1 and 2 Part 2 – WATER added! Read procedures and make observations Your observations go in the table Your sketches need to be as clear as possible and LABELLED!

Questions and conclusion Make sure to follow instructions and to write complete sentences in logical paragraphs! Questions and conclusion

Rubric How can I do well?

It is everyone’s job to clean up your lab station before leaving Don’t be the group that makes me do this!