Unit 1 Test on Scientific Method- Part 1

What does a hypothesis represent in the scientific method?

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.

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.

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.

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.

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.

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

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?

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?

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?

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?

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:

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

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?

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?

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?

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?

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?

What is the mean number of bubbles in dim light?

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.

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.

Which sex of snake has the greater mean mass?

Which species of snake is the strongest?

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

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

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

Examine the picture below and answer the following question.

What is the dependent variable?

Examine the picture below and answer the following question.

What is the population size at 5 days?

Examine the picture below.

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

Examine the picture below.

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

Examine the picture below.

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

Examine the picture below.

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

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?