Chapter 1 scientific theory

What is a tentative decision about the outcome of an experiment?

A hypothesis is a tentative decision about the outcome of an experiment.

The data show that trans fat intake raises cholesterol and contributed to heart disease...hypothesis, conclusions, or scientific theory?

Conlcusion

Which is made by a scientist following experiments and observations, a therory it a conclusion?

Conlcusion

What do scientist call the information they collect while doing experiments or making observations?

Data

What structures do pillbugs use for gas exchange and what condition must these structures be in to function properly?

Pillbugs use their gills for gas exchange. These gills must be slightly damp.

If your hypothesis was that your pillbug would be atttacyed to applesauce and your pillbug moved toward the applesauce, what would you say about your hypothesis?

Positive and supported

What kind of animal is a pill bug?

Terrestrial Isopod

Why is a theory more comprehensive than a conclusion?

A theory is more comprehensive than a conlcusion because a conclusion is based off from of one experiment while a theory is a combination of conclusions from multiple, similar experiments throughout many years.

If a pillbug moves towards a substance, is it attracted to it repressed by that substance?

Attracted

What kind of skeleton does a pillbug have?

Exoskeleton

Why is it important to have a control substance for an experiment?

Is is important to have a control substance for an experiment because it shows the difference between no reactions to a substance.

Why is it important to test a pillbug response using one substance at a time?

It is important to test a pillbugs response using one substance at a time to get a direct response to the substance

All organisms are made of cell... hypothesis, conclusions, or scientific theory?

Scientific theory

What do scientist develop after many years of experimentation and a lot of similar individual conclusions?

Scientific theory

What do scientist firs tfo when they begin to study a specific topic?

Scientists observe the subject when they begin an experiment.

What do we call the sample that lacks the factor being tested and goes through all the experimental steps?

The control