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Unit 1 Test on Scientific Method- Part 1

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Question 1
1.

What does a hypothesis represent in the scientific method?

Question 2
2.

What is the independent variable in the excerpt below?

Giovanni is doing an experiment to see what temperature produces the most mold on bread. Normally her bread sits at room temperature on the counter. She will try putting her bread in the refrigerator, in a warm incubator, and on the counter. She will measure how long it takes for mold to grow on each loaf of bread.

Question 3
3.

What is the dependent variable in the excerpt below?

Giovanni is doing an experiment to see what temperature produces the most mold on bread. Normally her bread sits at room temperature on the counter. She will try putting her bread in the refrigerator, in a warm incubator, and on the counter. She will measure how long it takes for mold to grow on each loaf of bread.

Question 4
4.

What are two constants in the excerpt below?

Giovanni is doing an experiment to see what temperature produces the most mold on bread. Normally her bread sits at room temperature on the counter. She will try putting her bread in the refrigerator, in a warm incubator, and on the counter. She will measure how long it takes for mold to grow on each loaf of bread.

Question 5
5.

What is a good hypothesis based on the except?

Giovanni is doing an experiment to see what temperature produces the most mold on bread. Normally her bread sits at room temperature on the counter. She will try putting her bread in the refrigerator, in a warm incubator, and on the counter. She will measure how long it takes for mold to grow on each loaf of bread.

Question 6
6.

What is the research question based on the except?

Giovanni is doing an experiment to see what temperature produces the most mold on bread. Normally her bread sits at room temperature on the counter. She will try putting her bread in the refrigerator, in a warm incubator, and on the counter. She will measure how long it takes for mold to grow on each loaf of bread.

Question 7
7.

A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The independent variable is

Question 8
8.

A scientist who wants to study the affects of fertilizer on plants sets up an experiment. Plant A gets no fertilizer, Plant B gets 5 mg of fertilizer each day, and Plant C gets 10mg of fertilizer each day. Which plant is the control group?

Question 9
9.

A scientist testing the affects of a chemical on apple yield sprays an orchard with the chemical. A second orchard does not receive the chemical. In the fall, the number of apples harvested from each forest is counted. Which of the following is the independent (manipulated) variable in the experiment?

Question 10
10.

A scientist testing the affects of a chemical on apple yield sprays an orchard with the chemical. A second orchard does not receive the chemical. In the fall, the number of apples harvested from each forest is counted. Which of the following is the control group in the experiment?

Question 11
11.

A scientist testing the affects of a chemical on apple yield sprays an orchard with the chemical. A second orchard does not receive the chemical. In the fall, the number of apples harvested from each forest is counted. What would be a constant in this experiment?

Question 12
12.

A scientist testing the affects of a chemical on apple yield sprays an orchard with the chemical. A second orchard does not receive the chemical. In the fall, the number of apples harvested from each forest is counted. In order for the apple tree experiment to be valid scientifically, both orchards must:

Question 13
13.

What's the difference between a hypothesis and a theory?

Question 14
14.

A study was made of endangered birds to see if their populations were increasing by
being protected from hunters. Scientists went out into the field every ten years and
counted the number of Whooping Crane, California Condor, and Black Swans they
found in their spring feeding grounds. Review the data table below.


What is the dependent variable?

Question 15
15.

A study was made of endangered birds to see if their populations were increasing by
being protected from hunters. Scientists went out into the field every ten years and
counted the number of Whooping Crane, California Condor, and Black Swans they
found in their spring feeding grounds. Review the data table below.


What type of graph is best to be used?

Question 16
16.

A study was made of endangered birds to see if their populations were increasing by
being protected from hunters. Scientists went out into the field every ten years and
counted the number of Whooping Crane, California Condor, and Black Swans they
found in their spring feeding grounds. Review the data table below.


What is a good title for the graph?

Question 17
17.

A study was made of endangered birds to see if their populations were increasing by
being protected from hunters. Scientists went out into the field every ten years and
counted the number of Whooping Crane, California Condor, and Black Swans they
found in their spring feeding grounds. Review the data table below.


What is the mean population of Black Swan?

Question 18
18.

Scientists have noted a decline in fungi species dating back to the early 1900’s. Hippies have noticed with concern that the annual crops of edible mushrooms in France and Germany have declined since 1950. One hypothesis to explain this decline is that edible fungi are being over-harvested and cannot replenish fast enough. Other factors could contribute to the decline. Which of the following findings would void (make incorrect) overharvesting as the cause of the decline?

Question 19
19.

What is the mean number of bubbles in dim light?

Question 20
20.

A student designed an experiment to study the transpiration through the leaves of a tomato plant (Solanum lycopersicum). Measurements were taken in the initial conditions with five leaves on a tomato shoot and then again after each of the five leaves was removed.


Describe the trend in the data.

Question 21
21.

The graph shows the mean annual changes in global temperatures between 1880 and 2014. The mean temperature from 1951 to 1980 was used as the value of zero change in temperature.


Calculate the increase in mean global temperature between 1880 and 2010.

Question 22
22.

Which sex of snake has the greater mean mass?

Question 23
23.

Which species of snake is the strongest?

Question 24
24.

For L. colubrina, calculate the difference between the strength of the male and female snakes.

Question 25
25.

Estimate the proportion in % of C. hyperboreus present in the food given to the chicks at the Greenland site.


Question 26
26.

In a graph, the dependent variable is usually found on the

Question 27
27.

Examine the picture below and answer the following question.


What is the dependent variable?

Question 28
28.

Examine the picture below and answer the following question.


What is the population size at 5 days?

Question 29
29.

Examine the picture below.


On Day 7, the plants kept in the sun for 3 hours were how tall?

Question 30
30.

Examine the picture below.


On Day 7, the plants kept in the sun for 6 hours were how tall?

Question 31
31.

Examine the picture below.


On Day 10, the plants kept in the sun for 9 hours were how tall?

Question 32
32.

Examine the picture below.


Based on the graph, the plant grows best in what amount of sunlight?

Question 33
33.

Examine the table below.


If a new soil type is tested and contains similar properties to loamy soil but retains slightly more moisture, what would be the most likely outcome?

The same person making the bread
Mold will grow less in cold temperatures
What is the effect of temperature on growing mold on a loaf of bread?
the amount of water provided to the plants
the amount of fertilizer
the second orchard
the number of apples
the chemical
the first orchard
bird species
ten years
171
52
As the number of leaves removed increases, the transpiration rate increases
Transpiration rate increases when there are more leaves removed
0.48 oC
5 0C
45.5
48%
30%
880
20 mm
20 mm
10 mm
3 hours
Plants would fail to germinate