Scientific Method, Variables, and Tools

Front

Researchers are developing a new fertilizer designed to improve the growth of endangered Hawaiian plants. The fertilizer was applied to one hundred plants in a greenhouse. The temperature, humidity and amount of water were kept constant. What should researchers do next?

Back

Compare plants that received fertilizer with plants that received none.

Front

What is the independent variable in an experiment where a scientist investigates the effect of carbon dioxide on plant height by growing plants in several closed containers with varying amounts of carbon dioxide?

Back

the amount of carbon dioxide in each container

Front

A meteorologist recorded high temperatures for five days at three locations on land. The data are shown in the table above. What can be inferred about the temperatures?

Back

Areas at the beach have the most stable temperatures.

Front

This variable in an experiment is the one being changed by the scientist.

Back

independent variable

Front

If you increase the amount of spinach you eat, then you will increase the iron in your blood. What's the dependent variable?

Back

increase the amount of iron in your blood

Front

If I ride my bike to school instead of walking, then I will get to school faster. What is the dependent variable?

Back

How fast you get to school

Front

What is the dependent variable in the statement: "If the students study for my scientific method test, then they will have a better test score."?

Back

Test score

Front

What is the part of the experiment that is left alone or “natural", and is used to compare back to?

Back

Control Group

Front

You will want your experiment to have ____ independent variable(s) in it for the experiment to be valid.

Back

1

Front

In a controlled experiment, the variable that is changed to test the hypothesis is called the –

Back

Independent Variable