Chapter 1 Mid-term Review

A hypothesis is a(n) ____.

• conclusion

• educated guess

• control

• experiment

Variables that do not change in an experiment are the ___.

• dependent variables

• independent variables

• controls

• constants

The variable being measured is the ___.

• dependent variable

• independent variable

• control

• constant

The __ is the standard by which your results can be compared.

• dependent variable

• independent variable

• control

• constant

An instrument that measures air pressure is a(n) ___.

• anemometer

• barometer

• hygrometer

• thermometer

The ___ is used to measure temperature.

• anemometer

• barometer

• hygrometer

• thermometer

Conclusions to scientific experiments should be based on ___.

• personal biases

• religious beliefs

• precise measurements and tests

• hypotheses

Which of the following is an explanation or model that is supported by many experiments and observations?

• hypothesis

• law

• theory

• estimate

The ___ is used to measure relative humidity.

• anemometer

• barometer

• hygrometer

• thermometer

Scientists use laboratory rats to test the effects of a new drug, Razatrin. What do rats in the control group receive?

• Food containing Razatrin

• Food without Razatrin

• Food containing another drug

• Food containing a variety of drugs