Biology quiz 1

A logical, systematic approach to the solution of a problem

Scientific method

A proposed, scientifically testable explanation

Hypothesis

experiment in which only one variable is changed by the experimenter

controlled experiment

In an experiment, the group that is not exposed to the treatment; contrasts with the experimental group and serves as a comparison for evaluating the effect of the treatment

Control group

A subject or group of subjects in an experiment that is exposed to the factor or condition being tested

Experimental group

The variable that is varied or manipulated by the researcher.

Independent Variable

A variable that is kept the same during a controlled experiment

Control variable

A farmer is seeing if feeding his cows all grass will help them gain weight. They were eating corn.

Cow A receives corn, Cow B receives grass.

Cow A represents what testing group?

Control group

A farmer is seeing if feeding his cows all grass will help them gain weight. They were eating corn.

Cow A receives corn, Cow B receives grass.

Cow B represents what testing group?

Experimental

A farmer is seeing if feeding his cows all grass will help them gain weight. They were eating corn.

Cow A receives corn, Cow B receives grass.

Feeding cows grass is what variable?

Independent variable

A farmer is seeing if feeding his cows all grass will help them gain weight. They were eating corn.

Cow A receives corn, Cow B receives grass.

Measuring weight is what variable?

Dependant variable

A farmer is seeing if feeding his cows all grass will help them gain weight. They were eating corn.

Cow A receives corn, Cow B receives grass.

Using the same type of cow, same farm, same feeding times is what variable?

Control variable