Tuesday 8 January 2013

Is It Alive?


What Characteristics are we using?
Respond to surrounding.
Need Air, Food, and Water.


Properties
Sample A
Sample B
Sample C
Sample D
Sample E
Size
Medium
Small
Big
Medium
Very Small
Texture
Grainy
Grainy
Rubbery, Hard
Hard, Rough
Soft, Powdery
Color
Beige
Yellowish White
Transparent
Black and Red
Brown

Sample
Claim
Evidence
Observation
A
Non-Living Thing
It did not react to both water and glucose.
It remained solid at the bottom of the test tube and remained the same on the cotton wool.
B
Living Thing
It reacted to the water and started dissolving into smaller pieces after only 3 seconds.
It reacted to glucose after around 3 seconds and started dissolving.
Sample B started to dissolve into the water and become powder in the test tube and turned the water murky.

Sample B dissolved and spread out and became yellow powder on the wet cotton wool.
C
Living Thing
It reacted to the water and started growing bigger after a few seconds and it reacted to the glucose after 2 or more seconds.
Sample C started to grow bigger and bigger as the time passed.
D
Non-Living Thing
It did not react to the glucose or the water.
It remained solid at the bottom of the test tube and remained the same on the cotton wool.
E
Non-Living Thing
It did not react to the glucose or the water.
It remained solid at the bottom of the test tube and remained the same on the cotton wool.





After a few days, the substances changed. This time, we can more accurately determine whether the substance is alive or not.

Sample
Claim
Evidence
Observation
D
Living Thing
The sample was actually seeds.
The seeds germinated and seedlings appeared.
E
Living Thing
The sample was actually eggs.
White creatures appeared from the eggs and they were moving.

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