Page 29 - Science Course 1 (Book 1)

Mo. 1 - L3a How Do We Conduct Science Experiment?

Pharmaceutical
and cosmetic
additives

Human and
livestock food CO2
Biodiesel
CO2 Coal-burning electric
Bioethanol Sunlight power plant.

Carbohydrates and lipids Scrubber removes CO2
extracted from from smokestack gases.
microalgae O2 O2 The CO2 does not pollute

Harvested microalgae the atmosphere, but it is
are used to make used as a feedstock for
several different microalgae.
products.
Microalgae use CO2 and
Pond with water and make
Microalgae carbohydrates(sugars)
and release oxygen.

Controlled Experiment Experimental Group - Group is exposed to special
conditions
A controlled experiment usually has at least two
groups: the experimental group and the control group.

The experimental group is
used to study how a change
in the independent variable
changes the dependent variable.

( Changes to Independent Variable)

The control group contains the Control Group - Group is exposed to normal condition.
same factors as the experimental
group, but the independent
variable is not changed.

How do students test scores respond to different
types of music played during a test
Experimental Group Control Group
Group is exposed to Group is exposed to
special conditions normal condition. ( No changes to Independent Variable)

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