An Experimenter Had People Exercise Much, a Little, or Not

question 127

Multiple Choice

An experimenter had people exercise much, a little, or not at all and then measured how much they ate at dinner 2 hours later. What was the independent variable in this experiment?

• A) the type of food offered
• B) the delay between exercise and dinner
• C) the amount of exercise
• D) the amount of food eaten

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Definitions:

Experiment

A scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.

Hypothesis

A hypothesis is a proposed explanation made on the basis of limited evidence as a starting point for further investigation.

Variable

An element, feature, or factor that is liable to vary or change.

Scientific Method

is a systematic approach to research and experimentation used to explore observations and answer questions by making hypotheses and testing them.