Using the information in the chart, what could you infer about the about of Arctic Sea Ice coverage in May of 2020

It will continue to be lower than average.

It will be back to the median between 1981 and 2010

It will be higher than the 1981-2010 median.

A scientist performs an experiment to see if acids have an effect on the health of a particular type of plant. Three sets of plants were treated with acidic solutions of known pH while the control set was treated with a solution of neutral pH 7.Which is the best conclusion for this experiment?

High acidity is harmful to this type of plant.

Acid has no effect on the health of this type of plant.

B. High acidity is helpful to this type of plant.

C. Low acidity is harmful to this type of plant.

The graph below shows atmospheric carbon dioxide levels since the year 1880.Which of the following conclusions can be drawn from this graph

Atmospheric carbon dioxide levels have been rising at an increasingly higher rate as the past century has progressed.

Atmospheric carbon dioxide levels are responsible for global temperature change.

Atmospheric carbon dioxide levels have been rising at about the same rate for the past century.

Atmospheric carbon dioxide levels have remained the same over the past century.

A research group has discovered that damselflies, a type of dragonfly, are being infected by a particular type of aquatic protozoan. Both young and adult damselflies are not directly infected by the protozoan but contract the infection from the prey they eat. The graph shows the percentage of adult damselflies infected by protozoans during the summer and early fal

Infection in embanked ponds increased during the sampling period.

Protozoans were more common in creek-fed ponds than embanked ponds.

Protozoans reproduce more quickly in embanked ponds than creek-fed ponds.

Infection in creed-fed ponds remained constant throughout the sampling period.

In an investigation into the uptake of a protein by cells, scientists immersed two cell types in solutions of this protein. The investigation was carried out at two different temperatures and the percentage of the protein taken up by the two cell types was recorded over 10 minutes. The data was presented in a table, as shown above. Which one of the following conclusions is supported by the data?

The rate of uptake of this protein by Cell type 2 is faster at 37 °C than at 25 °C.

The rate of uptake of this protein at 25 °C is not affected by cell type.

The percentage of this protein taken up by Cell type 1 is not affected by temperature.

If the experiment continued for another 10 minutes, the percentage of this protein taken up by Cell type 1 would increase.

What is the general order of the steps of the scientific methods:

question, hypothesis, experiment, analyze results, conclusion, communicate results

question, experiment, hypothesis, analyze, results, conclusion, communicate results.

question, hypothesis, experiment, analyze results, communicate results, conclusion

According to the graph shown, what effect did the brown tree snake have on the birds in Guam?

The snakes caused a decline in the number of bird populations.

The snakes had no effect on the bird populations.

The snakes formed a mutualistic relationship with the birds.

The snakes caused an increase in the number of bird populations.

A scientist collected the following data on algal growth during an experiment: Which of the following conclusions could be drawn from the data?

Algae multiply most rapidly at 20°C.

Algae multiply most rapidly at 35°C.

Algae multiply most slowly at 20°C.

Algae multiply most slowly at 10°C.

What is this graph showing you?

The worlds population has been growing and will continue to grow.

The worlds population is staying the same.

The worlds population is going down (decreasing).

The worlds population was growing but now is decreasing.

The scientific method can best be described as

cyclical process including asking questions, making inferences, developing hypotheses, gathering data and drawing conclusions that leads to additional questions

a logical explanation to a question or situation based on past knowledge and experience

analysis of data that will support, fail to support or contradict a hypothesis

A student wants to conduct an experiment to test the effects of different colors of light on the growth of aquatic plants. She will use red, blue, green and purple lights in different aquariums and will measure the growth of the aquatic plant Elodea over 6 weeks. Which of the following is true about the experiment?

The growth of the Elodea is the dependent variable.

The different colors of the lights is the dependent variable

The different colors of the lights is the controlled variable.

Both the different colors of the lights and the growth of the Elodea are controlled variables

Practice of Science

Authored by Joel Serena

Science

9th - 12th Grade

NGSS covered

Used 31+ times

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25 questions

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MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which of the following is a data table?

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which data below matches the data presented in the graph?

Jan 4 cm

Mar 5 cm

May 14 cm

Jan 4 cm

Mar 5 cm

May 13 cm

Jan 5 cm

Mar 6 cm

May 14 cm

Jan 4 cm

Mar 5 cm

May 5 cm

Examine the line graph below. If the population of Centerville continues to increase at the same rate, what will the population be in the year 2010?

16,000 people

6500 people

9500 people

8000 people

Joseph counted all of the different trees in the woods near his house. He made a graph showing his results. Which of the following conclusions can Joseph draw from his graph?

There are more elms than oaks in the woods near his house.

Cedars are the tallest trees in the woods near his house.

There are 95 trees in the woods near his house.

Maple trees are not able to grow in the woods near his house.

Examine the graph. Which variable is the dependent variable?

population (in thousands)

year

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What is the best definition of a conclusion?

a written description of events that occurred during an experiment

an act of recognizing and noting an occurrence by using the senses

a possible explanation of a scientific question based on observation

an explanation that uses data to support or reject a hypothesis

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

The one factor that a scientist changes during an experiment.

Controlled Variable

Dependent Variable

Independent Variable

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Practice of Science

Which of the following is a data table?

Which data below matches the data presented in the graph?

Examine the line graph below. If the population of Centerville continues to increase at the same rate, what will the population be in the year 2010?

Joseph counted all of the different trees in the woods near his house. He made a graph showing his results. Which of the following conclusions can Joseph draw from his graph?

Examine the graph. Which variable is the dependent variable?

What is the best definition of a conclusion?

The one factor that a scientist changes during an experiment.

The variable that is measured.

The factors that stay the same or are constant throughout the experiment.

Walker is testing which fertilizer will grow the tallest grass. The height of the grown grass is the __ variable.

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