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How to answer EOC questions.
This
question involves
knowledge of:
Controlled variables.
This
question involves
knowledge of:
Manipulated variable
This
question involves
knowledge of:
Responding variable
 Did
you incorporate supporting data?
(numbers)
 Did you use inferential logic?
 Example: As the amount of CO2 increases,
the mass of the plant increases. When
plants were grown without CO2, there
was no increase in mass. However, when
plants were grown with 1400 ppm CO2,
the plant mass increased to 10.8 grams.
The bean plants had 10 grams more mass
when the CO2 was highest.
This
question involves
knowledge of:
Ensuring validity
This
question involves
knowledge of:
Predict logically what
might occur if the
investigation changes.
WHERE
BEFORE/AFTER ENERGY
1.
2.
3.
4.
5.
6.
Electrical energy
to heat energy
Light energy to
chemical energy
Light energy to
heat energy
Heat energy to
heat energy
Heat energy to
kinetic energy
Kinetic energy to
kinetic energy
1.
2.
3.
4.
5.
6.
In the grow lamps
In the plants
In the plants
From lamp to air
or from water to
the air
From lamp to
molecules in the
air
From molecules of
air to molecules of
water
This
question involves
knowledge of:
Identify how organisms
use matter to sustain
life.
This
question involves
knowledge of:
Identify how DNA
provides instructions for
assembling proteins.

This
question involves
knowledge of:
Identify how organisms
pass on genetic
information.

This
question involves
knowledge of:
Identify how organisms
use matter to sustain
life.

The prediction portion of
the hypothesis must answer
the given question including
the effect of the
manipulated variable
(amount of mineral
nutrients) on the
responding variable (height
of bean plants).

A hypothesis must give a
cause-effect reason for
the prediction (…because
bean plants use mineral
nutrients to make food
for growth).

A list of the minimum
materials needed to
perform the procedure (e.g.
bean plants or bean seeds,
ruler, mineral nutrients,
growth chamber or pots
with soil)

At least 2 controlled
variables (e.g. nutrient
type, ruler, lights, initial
plant size).
Only 1 manipulated
variable (amount of
mineral nutrients)

A responding variable
(height of bean plants)
Procedure states or
implies measurements are
recorded periodically.
Are trials repeated?

Your procedure should include
a validity measure not
included in the scenario
investigation. (e.g. more
controlled variables, better
measuring technique,
increased range of conditions,
control for sample bias).
 Logical Steps – able to repeat
the procedure effectively?
