Science

an experiment that tests only one factor at a time by using a comparison of a control group and an experiment group is?

A controlled experiment

In which steps of the scientific method do we want to use graphs?

Analyze data

What is the correct order of the steps in the scientific method?

Ask questions, make a hypothesis, test the hypothesis, analyze results, draw conclusions, communicate results

When a scientist shares her finding with other scientists she is?

Communicating results

All the things in an experiment that must be kept the same to make it fair are called

Constants (variable that does not change)

In a experiment the factor that we measure is called the?

Dependent variable

What question would be the best high level scientific question?

Does the amount of soil in the water affect the temperature at which it boils

A scientific procedure undertaken to make a discovery test a-hypothesis or demonstrate a known fact is?

Experiment

Which of the following hypothesis is written correctly?

If I freeze a tennis ball, then it will not bounce as high.

A forest fire destroys trees in a large area. The forest rangers use the burned area to study the effect of different types of grasses on soil erosion. They choose ten plots of ground that are the same size. Each of these plots receives the same amount of sun. Each of these plots also has the same kind of soil and the same slope. The rangers plant each with a different type of grass. Measurements of soil erosion are made every week for the entire summer. What hypothesis is being tested in this study?

If the grass is planted then the amount of soil erosion will be reduced

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 10 mg of fertilizer each day. Which plant is the control group?

Plant A

Observations that include numbers or measurements are called?

Quantitative

A forest fire destroys trees in a large area. The first rangers used the burned area to study the effect of different types of grasses on soil erosion. They choose ten plots of the ground that are the same size. Each of these plots also has the same kind of soil and the same slope. The rangers plant each with the different type of grass. Measurements of soil erosion are made every week for the entire summer. Which is not controlled in the experiment?

The size of the plots

The final part; a summary of reasonable inferences is a/an

conclusion

When you decide whether or not the data supports the original hypothesis, you are

drawing conclusions

In science, an educated guess is called a/an

hypothesis

In an experiment, the one variable that is changed is called the

independent variable

Which of the following is not a rule when writing a hypothesis?

it should restate the question

What skill is a scientist using when listening to the sound whales make?

making observations

The process of obtaining information by using the senses is called

observation

A series of steps designed to help you solve problems and answer questions?

scientific method

A scientist conducted an experiment to determine how the amount of salt in a body of water affects the number of plants that can live in the water. In this experiment the dependent variable is

the number of plants in the water