# Objective 1 Scientific Method

Document Sample

```					Objective 1 Scientific Method

When answering a question with a
table, diagram or graph. . .
1. Read the title of the graph, table or
diagram.
2. Read each label, and any measurement
units for the labels.
3. Look at the data presented to determine
if you see a trend. For example, in a row
do the numbers go up or down? or is
there no pattern? In a column, do the
numbers go up or down?
4. Carefully look at pictures to determine
changes from one diagram to the next.
Once you have gathered the
information from the diagram. . .

 Now you are ready to
find the question in the
question.
 That means look for a
question mark. Use a
highlighter! If none,
 Look for a question
word or blank that
needs to be completed.
Let’s try this on a few . . .

 We are looking at 4 solutions
 if they conduct electricity,
paper, and
 what they do to litmus paper, and
 their pH.
Now we know what the table says…

 What trends do you see?
 What happens to pH and litmus when the
electrical conductivity is VERY HIGH?
 The pH is 10.0 (litmus blue) or 2.0 (litmus red)
 When is electrical conductivity LOW?
 The pH is 6.5 (litmus blue)
 Only MODERATE when pH is 5.6 (litmus red)
 So, what does the pH and litmus tell you
 Strong bases (high pH) and strong acids (low
pH) are better at conducting electricity.
Now look at the question. . .

29     The table shows data from an investigation
designed to find a liquid solution that is both an acid
and a strong electrolyte. Based on the data, a
solution that is both an acid and a strong electrolyte
is —
What are we looking for?
A     Solution 1
B     Solution 2       Acid and strong electrolyte, so, low pH
C    Solution 3        and Very High Electrical Conductivity,
Try another one . . .
 We are looking at
something in 3 tubes,
 Each tube at a
different
temperature,
 We are counting the
number of bubbles
after 2 minutes and 4
minutes.
 What do you see as a
trend?
Number of Bubbles: 1,2,4 for Tube 1; 3,6,12 in 2;
9,18,? in 3 What do you think the question is?
Now lets look at the question . . .
17 The table shows the results of growing a yeast
culture in a 5% glucose solution. The number of
bubbles produced was used to indicate the extent of
respiration by the yeast. If all other factors are held
constant, how many bubbles should be produced in
Tube 3 after 4 minutes?
A 20                      B 24
C 27                      D 36
From start
to 2 min it
doubles,
for 4 min it
is times 4.
9 x 4 = 36

11 The graph shows the results
of a study testing chemical
pesticides on a pest species
common to cotton plants.
Different chemical pesticides
were used in five different
areas. According to these
results, which of the
following is the most
effective chemical for
controlling this pest species?
AR
BS
CT
DV
So, what does the graph tell you?

1. It compares 5
pesticides,
2. The height of each
column is the
number of
surviving offspring
per square meter.
3. What does that
mean if the
column is short?
Look for the question . . .
According to these results,
which of the following is      What are you being
the most effective              asked to find if the
chemical for controlling        “pest species” is
this pest species?              controlled?
 Are you looking for
alive?
 Most alive is two
equal columns S &

Try the next 5 questions yourself.
1 In 1967, 34 million metric tons of fertilizers were
used in the United States. According to the graph,
how many more metric tons of fertilizers were used
30 years later?
A 16 million                  B 25 million
C 64 million                  D 84 million
2 The graph shows the
relative basal metabolic
rates of a field mouse and
an anole (a type of
lizard) at different
temperatures. According
to this information, the
field mouse —
A uses the least energy
when the environmental
temperature is 30°C
B is able to control its body
temperature
C uses less energy at 20°C
than the anole does
D is unaffected by
environmental
temperatures
3    Horses kept in stables
sometimes chew on wood.
This can lead to damage to
the mouth and digestive
system. The graph shows
the results of a study of a
medication that prevents
horses from chewing on
wood. From the graph, what
the product?
A    Most horses like the
medication.
B    The medication is most
effective between Days 4
and 5.
C    Most horses will show
improvement within 7 days.
D   The effects of the
medication are long lasting.
4 According to this
information, what
is the best
prediction for the
boiling point of the
seven carbon
alcohol?
A 169°C
B 178°C
C 186°C
D 192°C
5 Assuming the chart
contains all energy
transformations in
the Earth system,
how much solar
toward evaporating
water?
F 40,000 terajoules
G 92,410 terajoules
H 121,410 terajoules
J 133,410 terajoules
1. Answer A 50 million – 34 million = 16
2. Answer A, at the 30oC the mouse graph is
below the anole.
3. Answer C; the graph shows 90% of horses
stopped after 7 days, and the number
remained high after that.
19oC to the boiling point.
5. Answer F; subtract each of the categories
from the top one titled “Solar radiation
reaching earth” which is the total.

How well did you do? 5=100, 4=80, 3=60 . .

```
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
 views: 17 posted: 7/27/2012 language: pages: 18
How are you planning on using Docstoc?