Bio notes

Seite 1

hypothosis: The reason some are floating and some are not floating is because the density. The regular cans are more dense so therefore the sink while

Variables- controlled or not

Temp

Size of the can

Density=mass/volume

if everything is the same we get ride of the volume and make it mass over constant

Independent vs dependent

Science processing skills

1. Classification

2.measurement

3.prediction

4.observation & inference

5. communication

1.2 What is science

science is a body of knowledge; a collection of unified insights bout nature the evidence for which is an array of facts

Science as a body of knowledge

-The unified insights of science are known as theories

- A theory is a general set of principles, supported by evidence, that explains some aspect of nature

-Science can also be defined as a way of learning; a process of coming to understand the natural world through observation and testing hypotheses

Science as a body of knowledge

-Observation,

Questions,

hypothesis,

( statistical analysis) between hypothesis and experiment

experiment-

conclusion

-Science works through the scientific method in which an observation ads to the formulation of a question about the natural world.

- In science, every assertion regarding the natural world is subject to challenge and revision

What defines life ? water