AnswersRVACR EcologyAnalyzing Evidence

Analyzing Evidence — Unit test Answers

12 verified answers
1
Free Preview

What is the primary purpose of writing a lab report?

A
to summarize the rules of the laboratory to the students who will use it
B
to communicate the specifics of an experiment that was conducted
C
to record observations in an organized format during the experiment
D
to record which days a student worked in the laboratory
2
Free Preview

Edward Jenner’s smallpox inoculation experiment was based on his observation that dairymaids who had had cowpox did not contract smallpox. How did Jenner form his hypothesis from this observation?

A
He asked what would happen if he inoculated a person with cowpox fluid and then later with smallpox fluid.
B
He tested different existing inoculations to see which one was most effective in preventing smallpox.
C
He observed dairymaids who had contracted cowpox to see whether they became immune to smallpox.
D
He drew a conclusion about dairymaids who got cowpox becoming immune to getting smallpox.
3

A researcher is collecting qualitative data pertaining to social behaviors of deer at different times of the day. How will she most likely need to organize this data?

A
in a pie graph
B
in a bar graph
C
in a line graph
D
in a data table
4

The table shows results of an experiment that was replicated.

Question illustration
A
They are precise and reproducible.
B
They are precise but not reproducible.
C
They are accurate and reproducible.
D
They are accurate but not reproducible.
5

Which describes the correct procedure when converting a number from scientific notation to standard notation?

A
If the power of 10 is positive, move the decimal point to the left.
B
If the power of 10 is positive, move the decimal point to the right.
C
If the number being converted is greater than 10, move the decimal point to the left.
D
If the number being converted is greater than 10, move the decimal point to the right.
6

Many kinds of data can be gathered in the study of ocean water. Predictions are based on accurate and precise scientific data. Which of these sets of data will yield the most precise data?

A
temperature readings that have a range of 2°C
B
depth readings that have a range of 4 km
C
salinity readings that have a range of 20%
D
density readings that have a range of 4 kg/m3
7

Scientists must be able to repeat an experiment and get very similar results; otherwise their conclusions will be questioned. If the results of a repeated experiment are different from the original results, the results of the experiment

A
lack bias .
B
are precise.
C
lack controls.
D
are flawed.
8

What is 0.000345 expressed in scientific notation?

A
3.45 × 102
B
3.45 × 104
C
3.45 × 10–2
D
3.45 × 10–4
9

A researcher is collecting qualitative data pertaining to social behaviors of deer at different times of the day. How will she most likely need to organize this data?

A
in a pie graph
B
in a bar graph
C
in a line graph
D
in a data table
10

The graph below shows changes in Earth’s average surface temperature since 1880.The general trend that is shown on the graph is that average surface temperature on Earth

Question illustration
A
has fallen by 0.4°C since 1880.
B
has risen by nearly 1°C since 1880.
C
dropped a fraction of a degree in 2000.
D
rose sharply between the years 1900 and 1920.
11

Which would a scientist most likely do before asking a question that could lead to a scientific experiment?

A
measure plant growth in response to different fertilizers
B
determine the mass of a product from a chemical reaction
C
count the number of seeds that germinated after soaking in water
D
observe the number of tulip plants that sprouted late in a garden
12

What is 0.000345 expressed in scientific notation?

A
3.45 × 102
B
3.45 × 104
C
3.45 × 10–2
D
3.45 × 10–4
13

In a scientific investigation of lakes, the depth of a lake is most likely to be measured in

A
liters.
B
miles.
C
grams.
D
meters.
14

Dani wants to measure the volume of a pebble. Which tool will give the most accurate measurement?

A
a ruler
B
a tablespoon
C
a measuring cup
D
a graduated cylinder
15

The table shows results of an experiment that was replicated.

Question illustration
A
They are precise and reproducible.
B
They are precise but not reproducible.
C
They are accurate and reproducible.
D
They are accurate but not reproducible.

Did you find these answers helpful?

More from this Course

Quiz
15 verified answers

Unit Test

Quiz
3 verified answers

Unit Test

Quiz
15 verified answers

Unit Test