Hypothesisng and Experimenting

An educated guess based on your observations is....

• A theory

• A hypothesis

• An experiment

• A variable

A factor or condition that can be changed during an experiment is.....

• A theory

• A hypothesis

• A variable

• A control

Data that involves measurement and always has numerical values is...

• Qualitative

• Quantitative

An explanation that has been repeatedly confirmed by experimentation is....

• A theory

• An experiment

• A hypothesis

• A control

A __________ differs in only one variable from the experiment. It is used to provide a standard against which the results can be judged.

• Variable

• Hypothesis

• Control

• Theory

The grassland sward contained nettles and ragwort....qualitative or quantitative?

• Qualitative

• Quantitative

The animals gained an average of 0.5kg/day when the % protein in their feed was increased...quantitative or qualitative?

• Quantitative

• Qualitative

A farmer carried out an experiment to determine if the temperature of pig housing affected the weight gain of a group of pigs. What is the independent variable in this experiment?

• Weight of the pigs

• Food given to the pigs

• Temperature of the housing

• Whether the pigs are male or female

A scientist carried out an experiment to determine the dry matter content of different potato varieties. What is the dependent variable in this experiment?

• The dry matter content

• The variety of potato

• The time of year the potato was grown

• The amount of potatoes

____________ indicates that a change in one variable is the direct result of a change in another variable.

• Experimentation

• Interpretation

• Causation

• Analysis