1. Observations and Variables

2. Science has many branches.
What is Science?
Science has many branches.
Biological science is the science of ________ _________.
Physical science is the science of __________ ______________.
Earth science is the science of the Earth, the _____________, and ____________.
Science is the knowledge obtained by _______________ natural events and conditions in order to discover facts and formulate laws or principles that can be ____________________.

3. OBSERVATION =
Using your __________________(facts) about your universe.
Two Types
QUALITATIVE OBSERVATIONS: tell about quality: shape, color, size (no numbers), odor, location.
QUANTITATIVE OBSERVATIONS: includes a measurement (always a number, but NOT all numbers…)

4. ___________ ___________ ___________ ___________ ___________
Observation Examples
The whiteboard is rectangular.
The whiteboard is long.
The whiteboard is longer than the desk.
The whiteboard is 4.3 meters long.
The whiteboard is in room 152.
___________
___________
___________
___________
___________

5. Forming a Hypothesis
HYPOTHESIS: __________________
A hypothesis is a possible answer to a question based on observations that can be tested.
***Uses the information researched to help form the hypothesis****

6. Testing the Hypothesis
EXPERIMENT: Doing something to test the hypothesis. Must be repeatable and have…
_________________:
things that a scientist wants to remain constant
______________ ____________:
the one that is changed by the scientist. In an experiment there is only one independent variable.
______________ ___________:
the one that changes because of the change in the independent variable.

7. Find the Variables How fast does a candle burn?
Question
Independent Variable
Dependent Variable
Controlled Variables
How fast does a candle burn?
Does a certain fertilizer make a plant grow bigger?

8. Opinions and Inferences
NOT part of the scientific method. We try to avoid them!
OPINION: _______________________________________
INFERENCE: making a __________________ based on circumstantial evidence instead of on direct observation.
Examples…
1) The teacher poured water into beaker B.
2) The teacher poured a liquid into beaker B.

9. For the picture, write at least 2 observations and 2 inferences: